From 1c27ba931b5f5fce58363a59ed7aae94cb4ea336 Mon Sep 17 00:00:00 2001 From: Michael Watzko Date: Wed, 26 Jul 2023 22:30:29 +0200 Subject: [PATCH 01/26] Stabilize the Saturating type (saturating_int_impl, gh-87920) Also stabilizes saturating_int_assign_impl, gh-92354. And also make pub fns const where the underlying saturating_* fns became const in the meantime since the Saturating type was created. --- tests/ui/arithmetic_side_effects.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/ui/arithmetic_side_effects.rs b/tests/ui/arithmetic_side_effects.rs index def30f590..b454c29ae 100644 --- a/tests/ui/arithmetic_side_effects.rs +++ b/tests/ui/arithmetic_side_effects.rs @@ -10,7 +10,7 @@ arithmetic_overflow, unconditional_panic )] -#![feature(const_mut_refs, inline_const, saturating_int_impl)] +#![feature(const_mut_refs, inline_const)] #![warn(clippy::arithmetic_side_effects)] extern crate proc_macro_derive; From 0f74faf1584b5639a214ef794026bef2d842bfa3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?John=20K=C3=A5re=20Alsaker?= Date: Thu, 31 Aug 2023 22:12:47 +0200 Subject: [PATCH 02/26] Use `Freeze` for `SourceFile.lines` --- .../src/undocumented_unsafe_blocks.rs | 84 +++++++++---------- clippy_utils/src/source.rs | 2 +- 2 files changed, 39 insertions(+), 47 deletions(-) diff --git a/clippy_lints/src/undocumented_unsafe_blocks.rs b/clippy_lints/src/undocumented_unsafe_blocks.rs index a1ea3a495..da8d8ed4c 100644 --- a/clippy_lints/src/undocumented_unsafe_blocks.rs +++ b/clippy_lints/src/undocumented_unsafe_blocks.rs @@ -507,20 +507,18 @@ fn item_has_safety_comment(cx: &LateContext<'_>, item: &hir::Item<'_>) -> HasSaf && Lrc::ptr_eq(&unsafe_line.sf, &comment_start_line.sf) && let Some(src) = unsafe_line.sf.src.as_deref() { - return unsafe_line.sf.lines(|lines| { - if comment_start_line.line >= unsafe_line.line { - HasSafetyComment::No - } else { - match text_has_safety_comment( - src, - &lines[comment_start_line.line + 1..=unsafe_line.line], - unsafe_line.sf.start_pos, - ) { - Some(b) => HasSafetyComment::Yes(b), - None => HasSafetyComment::No, - } + return if comment_start_line.line >= unsafe_line.line { + HasSafetyComment::No + } else { + match text_has_safety_comment( + src, + &unsafe_line.sf.lines()[comment_start_line.line + 1..=unsafe_line.line], + unsafe_line.sf.start_pos, + ) { + Some(b) => HasSafetyComment::Yes(b), + None => HasSafetyComment::No, } - }); + }; } } HasSafetyComment::Maybe @@ -551,20 +549,18 @@ fn stmt_has_safety_comment(cx: &LateContext<'_>, span: Span, hir_id: HirId) -> H && Lrc::ptr_eq(&unsafe_line.sf, &comment_start_line.sf) && let Some(src) = unsafe_line.sf.src.as_deref() { - return unsafe_line.sf.lines(|lines| { - if comment_start_line.line >= unsafe_line.line { - HasSafetyComment::No - } else { - match text_has_safety_comment( - src, - &lines[comment_start_line.line + 1..=unsafe_line.line], - unsafe_line.sf.start_pos, - ) { - Some(b) => HasSafetyComment::Yes(b), - None => HasSafetyComment::No, - } + return if comment_start_line.line >= unsafe_line.line { + HasSafetyComment::No + } else { + match text_has_safety_comment( + src, + &unsafe_line.sf.lines()[comment_start_line.line + 1..=unsafe_line.line], + unsafe_line.sf.start_pos, + ) { + Some(b) => HasSafetyComment::Yes(b), + None => HasSafetyComment::No, } - }); + }; } } HasSafetyComment::Maybe @@ -614,20 +610,18 @@ fn span_from_macro_expansion_has_safety_comment(cx: &LateContext<'_>, span: Span && Lrc::ptr_eq(&unsafe_line.sf, ¯o_line.sf) && let Some(src) = unsafe_line.sf.src.as_deref() { - unsafe_line.sf.lines(|lines| { - if macro_line.line < unsafe_line.line { - match text_has_safety_comment( - src, - &lines[macro_line.line + 1..=unsafe_line.line], - unsafe_line.sf.start_pos, - ) { - Some(b) => HasSafetyComment::Yes(b), - None => HasSafetyComment::No, - } - } else { - HasSafetyComment::No + if macro_line.line < unsafe_line.line { + match text_has_safety_comment( + src, + &unsafe_line.sf.lines()[macro_line.line + 1..=unsafe_line.line], + unsafe_line.sf.start_pos, + ) { + Some(b) => HasSafetyComment::Yes(b), + None => HasSafetyComment::No, } - }) + } else { + HasSafetyComment::No + } } else { // Problem getting source text. Pretend a comment was found. HasSafetyComment::Maybe @@ -671,13 +665,11 @@ fn span_in_body_has_safety_comment(cx: &LateContext<'_>, span: Span) -> bool { // Get the text from the start of function body to the unsafe block. // fn foo() { some_stuff; unsafe { stuff }; other_stuff; } // ^-------------^ - unsafe_line.sf.lines(|lines| { - body_line.line < unsafe_line.line && text_has_safety_comment( - src, - &lines[body_line.line + 1..=unsafe_line.line], - unsafe_line.sf.start_pos, - ).is_some() - }) + body_line.line < unsafe_line.line && text_has_safety_comment( + src, + &unsafe_line.sf.lines()[body_line.line + 1..=unsafe_line.line], + unsafe_line.sf.start_pos, + ).is_some() } else { // Problem getting source text. Pretend a comment was found. true diff --git a/clippy_utils/src/source.rs b/clippy_utils/src/source.rs index 03416d35b..600cd084c 100644 --- a/clippy_utils/src/source.rs +++ b/clippy_utils/src/source.rs @@ -118,7 +118,7 @@ fn first_char_in_first_line(cx: &T, span: Span) -> Option(cx: &T, span: Span) -> Span { let span = original_sp(span, DUMMY_SP); let SourceFileAndLine { sf, line } = cx.sess().source_map().lookup_line(span.lo()).unwrap(); - let line_start = sf.lines(|lines| lines[line]); + let line_start = sf.lines()[line]; let line_start = sf.absolute_position(line_start); span.with_lo(line_start) } From e88a556124189e3ee23841238252b3831b3af966 Mon Sep 17 00:00:00 2001 From: Alex Macleod Date: Fri, 8 Sep 2023 22:39:20 +0000 Subject: [PATCH 03/26] Reuse rustdoc's doc comment handling in Clippy --- clippy_lints/Cargo.toml | 1 - clippy_lints/src/doc.rs | 183 +++++++++------------------ clippy_lints/src/lib.rs | 2 + tests/compile-test.rs | 4 +- tests/ui/doc/doc-fixable.fixed | 10 ++ tests/ui/doc/doc-fixable.rs | 10 ++ tests/ui/doc/doc-fixable.stderr | 13 +- tests/ui/doc/unbalanced_ticks.rs | 2 +- tests/ui/doc/unbalanced_ticks.stderr | 21 +-- tests/ui/doc_errors.rs | 16 +++ tests/ui/doc_errors.stderr | 2 +- tests/ui/needless_doc_main.rs | 9 +- tests/ui/needless_doc_main.stderr | 42 ++++-- 13 files changed, 159 insertions(+), 156 deletions(-) diff --git a/clippy_lints/Cargo.toml b/clippy_lints/Cargo.toml index c0a9f466e..dcd9a4adc 100644 --- a/clippy_lints/Cargo.toml +++ b/clippy_lints/Cargo.toml @@ -15,7 +15,6 @@ clippy_utils = { path = "../clippy_utils" } declare_clippy_lint = { path = "../declare_clippy_lint" } if_chain = "1.0" itertools = "0.10.1" -pulldown-cmark = { version = "0.9", default-features = false } quine-mc_cluskey = "0.2" regex-syntax = "0.7" serde = { version = "1.0", features = ["derive"] } diff --git a/clippy_lints/src/doc.rs b/clippy_lints/src/doc.rs index e29ab634c..d8f2fbcea 100644 --- a/clippy_lints/src/doc.rs +++ b/clippy_lints/src/doc.rs @@ -1,18 +1,16 @@ use clippy_utils::attrs::is_doc_hidden; use clippy_utils::diagnostics::{span_lint, span_lint_and_help, span_lint_and_note, span_lint_and_then}; use clippy_utils::macros::{is_panic, root_macro_call_first_node}; -use clippy_utils::source::{first_line_of_span, snippet_with_applicability}; +use clippy_utils::source::snippet_with_applicability; use clippy_utils::ty::{implements_trait, is_type_diagnostic_item}; use clippy_utils::{is_entrypoint_fn, method_chain_args, return_ty}; use if_chain::if_chain; -use itertools::Itertools; use pulldown_cmark::Event::{ Code, End, FootnoteReference, HardBreak, Html, Rule, SoftBreak, Start, TaskListMarker, Text, }; use pulldown_cmark::Tag::{CodeBlock, Heading, Item, Link, Paragraph}; use pulldown_cmark::{BrokenLink, CodeBlockKind, CowStr, Options}; -use rustc_ast::ast::{Async, AttrKind, Attribute, Fn, FnRetTy, ItemKind}; -use rustc_ast::token::CommentKind; +use rustc_ast::ast::{Async, Attribute, Fn, FnRetTy, ItemKind}; use rustc_data_structures::fx::FxHashSet; use rustc_data_structures::sync::Lrc; use rustc_errors::emitter::EmitterWriter; @@ -26,6 +24,9 @@ use rustc_middle::lint::in_external_macro; use rustc_middle::ty; use rustc_parse::maybe_new_parser_from_source_str; use rustc_parse::parser::ForceCollect; +use rustc_resolve::rustdoc::{ + add_doc_fragment, attrs_to_doc_fragments, main_body_opts, source_span_for_markdown_range, DocFragment, +}; use rustc_session::parse::ParseSess; use rustc_session::{declare_tool_lint, impl_lint_pass}; use rustc_span::edition::Edition; @@ -450,53 +451,16 @@ fn lint_for_missing_headers( } } -/// Cleanup documentation decoration. -/// -/// We can't use `rustc_ast::attr::AttributeMethods::with_desugared_doc` or -/// `rustc_ast::parse::lexer::comments::strip_doc_comment_decoration` because we -/// need to keep track of -/// the spans but this function is inspired from the later. -#[expect(clippy::cast_possible_truncation)] -#[must_use] -pub fn strip_doc_comment_decoration(doc: &str, comment_kind: CommentKind, span: Span) -> (String, Vec<(usize, Span)>) { - // one-line comments lose their prefix - if comment_kind == CommentKind::Line { - let mut doc = doc.to_owned(); - doc.push('\n'); - let len = doc.len(); - // +3 skips the opening delimiter - return (doc, vec![(len, span.with_lo(span.lo() + BytePos(3)))]); - } +#[derive(Copy, Clone)] +struct Fragments<'a> { + doc: &'a str, + fragments: &'a [DocFragment], +} - let mut sizes = vec![]; - let mut contains_initial_stars = false; - for line in doc.lines() { - let offset = line.as_ptr() as usize - doc.as_ptr() as usize; - debug_assert_eq!(offset as u32 as usize, offset); - contains_initial_stars |= line.trim_start().starts_with('*'); - // +1 adds the newline, +3 skips the opening delimiter - sizes.push((line.len() + 1, span.with_lo(span.lo() + BytePos(3 + offset as u32)))); +impl Fragments<'_> { + fn span(self, cx: &LateContext<'_>, range: Range) -> Option { + source_span_for_markdown_range(cx.tcx, &self.doc, &range, &self.fragments) } - if !contains_initial_stars { - return (doc.to_string(), sizes); - } - // remove the initial '*'s if any - let mut no_stars = String::with_capacity(doc.len()); - for line in doc.lines() { - let mut chars = line.chars(); - for c in &mut chars { - if c.is_whitespace() { - no_stars.push(c); - } else { - no_stars.push(if c == '*' { ' ' } else { c }); - break; - } - } - no_stars.push_str(chars.as_str()); - no_stars.push('\n'); - } - - (no_stars, sizes) } #[derive(Copy, Clone, Default)] @@ -515,27 +479,12 @@ fn check_attrs(cx: &LateContext<'_>, valid_idents: &FxHashSet, attrs: &[ Some(("fake".into(), "fake".into())) } + let (fragments, _) = attrs_to_doc_fragments(attrs.iter().map(|attr| (attr, None)), true); let mut doc = String::new(); - let mut spans = vec![]; - - for attr in attrs { - if let AttrKind::DocComment(comment_kind, comment) = attr.kind { - let (comment, current_spans) = strip_doc_comment_decoration(comment.as_str(), comment_kind, attr.span); - spans.extend_from_slice(¤t_spans); - doc.push_str(&comment); - } else if attr.has_name(sym::doc) { - // ignore mix of sugared and non-sugared doc - // don't trigger the safety or errors check - return None; - } - } - - let mut current = 0; - for &mut (ref mut offset, _) in &mut spans { - let offset_copy = *offset; - *offset = current; - current += offset_copy; + for fragment in &fragments { + add_doc_fragment(&mut doc, fragment); } + doc.pop(); if doc.is_empty() { return Some(DocHeaders::default()); @@ -543,23 +492,19 @@ fn check_attrs(cx: &LateContext<'_>, valid_idents: &FxHashSet, attrs: &[ let mut cb = fake_broken_link_callback; - let parser = - pulldown_cmark::Parser::new_with_broken_link_callback(&doc, Options::empty(), Some(&mut cb)).into_offset_iter(); - // Iterate over all `Events` and combine consecutive events into one - let events = parser.coalesce(|previous, current| { - let previous_range = previous.1; - let current_range = current.1; + // disable smart punctuation to pick up ['link'] more easily + let opts = main_body_opts() - Options::ENABLE_SMART_PUNCTUATION; + let parser = pulldown_cmark::Parser::new_with_broken_link_callback(&doc, opts, Some(&mut cb)); - match (previous.0, current.0) { - (Text(previous), Text(current)) => { - let mut previous = previous.to_string(); - previous.push_str(¤t); - Ok((Text(previous.into()), previous_range)) - }, - (previous, current) => Err(((previous, previous_range), (current, current_range))), - } - }); - Some(check_doc(cx, valid_idents, events, &spans)) + Some(check_doc( + cx, + valid_idents, + parser.into_offset_iter(), + Fragments { + fragments: &fragments, + doc: &doc, + }, + )) } const RUST_CODE: &[&str] = &["rust", "no_run", "should_panic", "compile_fail"]; @@ -568,7 +513,7 @@ fn check_doc<'a, Events: Iterator, Range, valid_idents: &FxHashSet, events: Events, - spans: &[(usize, Span)], + fragments: Fragments<'_>, ) -> DocHeaders { // true if a safety header was found let mut headers = DocHeaders::default(); @@ -579,8 +524,8 @@ fn check_doc<'a, Events: Iterator, Range, Span)> = Vec::new(); - let mut paragraph_span = spans.get(0).expect("function isn't called if doc comment is empty").1; + let mut text_to_check: Vec<(CowStr<'_>, Range)> = Vec::new(); + let mut paragraph_range = 0..0; for (event, range) in events { match event { Start(CodeBlock(ref kind)) => { @@ -613,25 +558,28 @@ fn check_doc<'a, Events: Iterator, Range { if let End(Heading(_, _, _)) = event { in_heading = false; } - if ticks_unbalanced { + if ticks_unbalanced + && let Some(span) = fragments.span(cx, paragraph_range.clone()) + { span_lint_and_help( cx, DOC_MARKDOWN, - paragraph_span, + span, "backticks are unbalanced", None, "a backtick may be missing a pair", ); } else { - for (text, span) in text_to_check { - check_text(cx, valid_idents, &text, span); + for (text, range) in text_to_check { + if let Some(span) = fragments.span(cx, range) { + check_text(cx, valid_idents, &text, span); + } } } text_to_check = Vec::new(); @@ -640,8 +588,7 @@ fn check_doc<'a, Events: Iterator, Range (), // HTML is weird, just ignore it SoftBreak | HardBreak | TaskListMarker(_) | Code(_) | Rule => (), FootnoteReference(text) | Text(text) => { - let (begin, span) = get_current_span(spans, range.start); - paragraph_span = paragraph_span.with_hi(span.hi()); + paragraph_range.end = range.end; ticks_unbalanced |= text.contains('`') && !in_code; if Some(&text) == in_link.as_ref() || ticks_unbalanced { // Probably a link of the form `` @@ -658,19 +605,19 @@ fn check_doc<'a, Events: Iterator, Range, Range, - in_link: bool, - trimmed_text: &str, - span: Span, - range: &Range, - begin: usize, - text_len: usize, -) { - if in_link && trimmed_text.starts_with('\'') && trimmed_text.ends_with('\'') { - // fix the span to only point at the text within the link - let lo = span.lo() + BytePos::from_usize(range.start - begin); +fn check_link_quotes(cx: &LateContext<'_>, trimmed_text: &str, range: Range, fragments: Fragments<'_>) { + if trimmed_text.starts_with('\'') + && trimmed_text.ends_with('\'') + && let Some(span) = fragments.span(cx, range) + { span_lint( cx, DOC_LINK_WITH_QUOTES, - span.with_lo(lo).with_hi(lo + BytePos::from_usize(text_len)), + span, "possible intra-doc link using quotes instead of backticks", ); } } -fn get_current_span(spans: &[(usize, Span)], idx: usize) -> (usize, Span) { - let index = match spans.binary_search_by(|c| c.0.cmp(&idx)) { - Ok(o) => o, - Err(e) => e - 1, - }; - spans[index] -} - -fn check_code(cx: &LateContext<'_>, text: &str, edition: Edition, span: Span) { +fn check_code(cx: &LateContext<'_>, text: &str, edition: Edition, range: Range, fragments: Fragments<'_>) { fn has_needless_main(code: String, edition: Edition) -> bool { rustc_driver::catch_fatal_errors(|| { rustc_span::create_session_globals_then(edition, || { @@ -774,12 +706,13 @@ fn check_code(cx: &LateContext<'_>, text: &str, edition: Edition, span: Span) { .unwrap_or_default() } + let trailing_whitespace = text.len() - text.trim_end().len(); + // Because of the global session, we need to create a new session in a different thread with // the edition we need. let text = text.to_owned(); - if thread::spawn(move || has_needless_main(text, edition)) - .join() - .expect("thread::spawn failed") + if thread::spawn(move || has_needless_main(text, edition)).join().expect("thread::spawn failed") + && let Some(span) = fragments.span(cx, range.start..range.end - trailing_whitespace) { span_lint(cx, NEEDLESS_DOCTEST_MAIN, span, "needless `fn main` in doctest"); } diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs index ab71bfbdc..20fdf26dc 100644 --- a/clippy_lints/src/lib.rs +++ b/clippy_lints/src/lib.rs @@ -21,6 +21,7 @@ // FIXME: switch to something more ergonomic here, once available. // (Currently there is no way to opt into sysroot crates without `extern crate`.) +extern crate pulldown_cmark; extern crate rustc_arena; extern crate rustc_ast; extern crate rustc_ast_pretty; @@ -37,6 +38,7 @@ extern crate rustc_lexer; extern crate rustc_lint; extern crate rustc_middle; extern crate rustc_parse; +extern crate rustc_resolve; extern crate rustc_session; extern crate rustc_span; extern crate rustc_target; diff --git a/tests/compile-test.rs b/tests/compile-test.rs index e329a94ff..c1c3d4a86 100644 --- a/tests/compile-test.rs +++ b/tests/compile-test.rs @@ -130,7 +130,9 @@ fn base_config(test_dir: &str) -> (Config, Args) { }; let mut config = Config { - mode: Mode::Yolo { rustfix: RustfixMode::Everything }, + mode: Mode::Yolo { + rustfix: RustfixMode::Everything, + }, stderr_filters: vec![(Match::PathBackslash, b"/")], stdout_filters: vec![], output_conflict_handling: if bless { diff --git a/tests/ui/doc/doc-fixable.fixed b/tests/ui/doc/doc-fixable.fixed index f7c2f14a4..47b56960a 100644 --- a/tests/ui/doc/doc-fixable.fixed +++ b/tests/ui/doc/doc-fixable.fixed @@ -198,6 +198,16 @@ fn pulldown_cmark_crash() {} /// [plain text][path::to::item] fn intra_doc_link() {} +/// Ignore escaped\_underscores +/// +/// \\[ +/// \\prod\_{x\\in X} p\_x +/// \\] +fn issue_2581() {} + +/// Foo \[bar\] \[baz\] \[qux\]. `DocMarkdownLint` +fn lint_after_escaped_chars() {} + // issue #7033 - generic_const_exprs ICE struct S where [(); N.checked_next_power_of_two().unwrap()]: { diff --git a/tests/ui/doc/doc-fixable.rs b/tests/ui/doc/doc-fixable.rs index 51961e75b..4d9a4eafa 100644 --- a/tests/ui/doc/doc-fixable.rs +++ b/tests/ui/doc/doc-fixable.rs @@ -198,6 +198,16 @@ fn pulldown_cmark_crash() {} /// [plain text][path::to::item] fn intra_doc_link() {} +/// Ignore escaped\_underscores +/// +/// \\[ +/// \\prod\_{x\\in X} p\_x +/// \\] +fn issue_2581() {} + +/// Foo \[bar\] \[baz\] \[qux\]. DocMarkdownLint +fn lint_after_escaped_chars() {} + // issue #7033 - generic_const_exprs ICE struct S where [(); N.checked_next_power_of_two().unwrap()]: { diff --git a/tests/ui/doc/doc-fixable.stderr b/tests/ui/doc/doc-fixable.stderr index a30ded813..4c9ff41d9 100644 --- a/tests/ui/doc/doc-fixable.stderr +++ b/tests/ui/doc/doc-fixable.stderr @@ -308,5 +308,16 @@ help: try LL | /// An iterator over `mycrate::Collection`'s values. | ~~~~~~~~~~~~~~~~~~~~~ -error: aborting due to 28 previous errors +error: item in documentation is missing backticks + --> $DIR/doc-fixable.rs:208:34 + | +LL | /// Foo \[bar\] \[baz\] \[qux\]. DocMarkdownLint + | ^^^^^^^^^^^^^^^ + | +help: try + | +LL | /// Foo \[bar\] \[baz\] \[qux\]. `DocMarkdownLint` + | ~~~~~~~~~~~~~~~~~ + +error: aborting due to 29 previous errors diff --git a/tests/ui/doc/unbalanced_ticks.rs b/tests/ui/doc/unbalanced_ticks.rs index 4a1711f79..6f7bab720 100644 --- a/tests/ui/doc/unbalanced_ticks.rs +++ b/tests/ui/doc/unbalanced_ticks.rs @@ -48,4 +48,4 @@ fn other_markdown() {} /// /// `lol` /// pub struct Struct; /// ``` -fn iss_7421() {} +fn issue_7421() {} diff --git a/tests/ui/doc/unbalanced_ticks.stderr b/tests/ui/doc/unbalanced_ticks.stderr index 92b6f8536..89ad8db39 100644 --- a/tests/ui/doc/unbalanced_ticks.stderr +++ b/tests/ui/doc/unbalanced_ticks.stderr @@ -1,7 +1,8 @@ error: backticks are unbalanced - --> $DIR/unbalanced_ticks.rs:7:1 + --> $DIR/unbalanced_ticks.rs:7:5 | -LL | / /// This is a doc comment with `unbalanced_tick marks and several words that +LL | /// This is a doc comment with `unbalanced_tick marks and several words that + | _____^ LL | | LL | | /// should be `encompassed_by` tick marks because they `contain_underscores`. LL | | /// Because of the initial `unbalanced_tick` pair, the error message is @@ -13,10 +14,10 @@ LL | | /// very `confusing_and_misleading`. = help: to override `-D warnings` add `#[allow(clippy::doc_markdown)]` error: backticks are unbalanced - --> $DIR/unbalanced_ticks.rs:14:1 + --> $DIR/unbalanced_ticks.rs:14:5 | LL | /// This paragraph has `unbalanced_tick marks and should stop_linting. - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: a backtick may be missing a pair @@ -32,10 +33,10 @@ LL | /// This paragraph is fine and `should_be` linted normally. | ~~~~~~~~~~~ error: backticks are unbalanced - --> $DIR/unbalanced_ticks.rs:20:1 + --> $DIR/unbalanced_ticks.rs:20:5 | LL | /// Double unbalanced backtick from ``here to here` should lint. - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: a backtick may be missing a pair @@ -51,18 +52,18 @@ LL | /// ## `not_fine` | ~~~~~~~~~~ error: backticks are unbalanced - --> $DIR/unbalanced_ticks.rs:37:1 + --> $DIR/unbalanced_ticks.rs:37:5 | LL | /// ### `unbalanced - | ^^^^^^^^^^^^^^^^^^^ + | ^^^^^^^^^^^^^^^ | = help: a backtick may be missing a pair error: backticks are unbalanced - --> $DIR/unbalanced_ticks.rs:40:1 + --> $DIR/unbalanced_ticks.rs:40:5 | LL | /// - This `item has unbalanced tick marks - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: a backtick may be missing a pair diff --git a/tests/ui/doc_errors.rs b/tests/ui/doc_errors.rs index 86721f61d..d661231c5 100644 --- a/tests/ui/doc_errors.rs +++ b/tests/ui/doc_errors.rs @@ -85,6 +85,22 @@ impl Struct1 { async fn async_priv_method_missing_errors_header() -> Result<(), ()> { unimplemented!(); } + + /** + # Errors + A description of the errors goes here. + */ + fn block_comment() -> Result<(), ()> { + unimplemented!(); + } + + /** + * # Errors + * A description of the errors goes here. + */ + fn block_comment_leading_asterisks() -> Result<(), ()> { + unimplemented!(); + } } pub trait Trait1 { diff --git a/tests/ui/doc_errors.stderr b/tests/ui/doc_errors.stderr index 9cea864f1..28b2db244 100644 --- a/tests/ui/doc_errors.stderr +++ b/tests/ui/doc_errors.stderr @@ -38,7 +38,7 @@ LL | pub async fn async_pub_method_missing_errors_header() -> Result<(), ()> | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: docs for function returning `Result` missing `# Errors` section - --> $DIR/doc_errors.rs:92:5 + --> $DIR/doc_errors.rs:108:5 | LL | fn trait_method_missing_errors_header() -> Result<(), ()>; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/needless_doc_main.rs b/tests/ui/needless_doc_main.rs index d31b9047e..fee05926c 100644 --- a/tests/ui/needless_doc_main.rs +++ b/tests/ui/needless_doc_main.rs @@ -10,7 +10,7 @@ /// unimplemented!(); /// } /// ``` -/// +/// /// With an explicit return type it should lint too /// ```edition2015 /// fn main() -> () { @@ -18,7 +18,7 @@ /// unimplemented!(); /// } /// ``` -/// +/// /// This should, too. /// ```rust /// fn main() { @@ -26,11 +26,12 @@ /// unimplemented!(); /// } /// ``` -/// +/// /// This one too. /// ```no_run -/// fn main() { +/// // the fn is not always the first line //~^ ERROR: needless `fn main` in doctest +/// fn main() { /// unimplemented!(); /// } /// ``` diff --git a/tests/ui/needless_doc_main.stderr b/tests/ui/needless_doc_main.stderr index 8dd93bb05..842565486 100644 --- a/tests/ui/needless_doc_main.stderr +++ b/tests/ui/needless_doc_main.stderr @@ -1,29 +1,47 @@ error: needless `fn main` in doctest - --> $DIR/needless_doc_main.rs:7:4 + --> $DIR/needless_doc_main.rs:7:5 | -LL | /// fn main() { - | ^^^^^^^^^^^^ +LL | /// fn main() { + | _____^ +LL | | +LL | | +LL | | /// unimplemented!(); +LL | | /// } + | |_____^ | = note: `-D clippy::needless-doctest-main` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::needless_doctest_main)]` error: needless `fn main` in doctest - --> $DIR/needless_doc_main.rs:16:4 + --> $DIR/needless_doc_main.rs:16:5 | -LL | /// fn main() -> () { - | ^^^^^^^^^^^^^^^^^^ +LL | /// fn main() -> () { + | _____^ +LL | | +LL | | /// unimplemented!(); +LL | | /// } + | |_____^ error: needless `fn main` in doctest - --> $DIR/needless_doc_main.rs:24:4 + --> $DIR/needless_doc_main.rs:24:5 | -LL | /// fn main() { - | ^^^^^^^^^^^^ +LL | /// fn main() { + | _____^ +LL | | +LL | | /// unimplemented!(); +LL | | /// } + | |_____^ error: needless `fn main` in doctest - --> $DIR/needless_doc_main.rs:32:4 + --> $DIR/needless_doc_main.rs:32:5 | -LL | /// fn main() { - | ^^^^^^^^^^^^ +LL | /// // the fn is not always the first line + | _____^ +LL | | +LL | | /// fn main() { +LL | | /// unimplemented!(); +LL | | /// } + | |_____^ error: aborting due to 4 previous errors From 54f3ddb84a2bbdbb0b60f1d38ea3deae03286b30 Mon Sep 17 00:00:00 2001 From: Alex Macleod Date: Sun, 10 Sep 2023 18:17:47 +0000 Subject: [PATCH 04/26] Call `LateLintPass::check_attribute` from `with_lint_attrs` --- tests/ui/allow_attributes.fixed | 7 +++++++ tests/ui/allow_attributes.rs | 7 +++++++ tests/ui/blanket_clippy_restriction_lints.stderr | 14 +++++++------- 3 files changed, 21 insertions(+), 7 deletions(-) diff --git a/tests/ui/allow_attributes.fixed b/tests/ui/allow_attributes.fixed index 945ba8361..b506a9890 100644 --- a/tests/ui/allow_attributes.fixed +++ b/tests/ui/allow_attributes.fixed @@ -22,6 +22,13 @@ struct T4; #[cfg_attr(panic = "unwind", expect(dead_code))] struct CfgT; +#[allow(clippy::allow_attributes, unused)] +struct Allowed; + +#[expect(clippy::allow_attributes)] +#[allow(unused)] +struct Expected; + fn ignore_external() { external! { #[allow(clippy::needless_borrow)] // Should not lint diff --git a/tests/ui/allow_attributes.rs b/tests/ui/allow_attributes.rs index 8afa61c70..c7daa7abd 100644 --- a/tests/ui/allow_attributes.rs +++ b/tests/ui/allow_attributes.rs @@ -22,6 +22,13 @@ struct T4; #[cfg_attr(panic = "unwind", allow(dead_code))] struct CfgT; +#[allow(clippy::allow_attributes, unused)] +struct Allowed; + +#[expect(clippy::allow_attributes)] +#[allow(unused)] +struct Expected; + fn ignore_external() { external! { #[allow(clippy::needless_borrow)] // Should not lint diff --git a/tests/ui/blanket_clippy_restriction_lints.stderr b/tests/ui/blanket_clippy_restriction_lints.stderr index d04ea7151..afb634f34 100644 --- a/tests/ui/blanket_clippy_restriction_lints.stderr +++ b/tests/ui/blanket_clippy_restriction_lints.stderr @@ -1,10 +1,3 @@ -error: `clippy::restriction` is not meant to be enabled as a group - | - = note: because of the command line `--warn clippy::restriction` - = help: enable the restriction lints you need individually - = note: `-D clippy::blanket-clippy-restriction-lints` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::blanket_clippy_restriction_lints)]` - error: `clippy::restriction` is not meant to be enabled as a group --> $DIR/blanket_clippy_restriction_lints.rs:6:9 | @@ -12,6 +5,8 @@ LL | #![warn(clippy::restriction)] | ^^^^^^^^^^^^^^^^^^^ | = help: enable the restriction lints you need individually + = note: `-D clippy::blanket-clippy-restriction-lints` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::blanket_clippy_restriction_lints)]` error: `clippy::restriction` is not meant to be enabled as a group --> $DIR/blanket_clippy_restriction_lints.rs:8:9 @@ -29,5 +24,10 @@ LL | #![forbid(clippy::restriction)] | = help: enable the restriction lints you need individually +error: `clippy::restriction` is not meant to be enabled as a group + | + = note: because of the command line `--warn clippy::restriction` + = help: enable the restriction lints you need individually + error: aborting due to 4 previous errors From ab08a3d7b2143154f16b82c388bb355aff6c4b4b Mon Sep 17 00:00:00 2001 From: Matthew Jasper Date: Fri, 8 Sep 2023 16:14:47 +0000 Subject: [PATCH 05/26] Update tools and fulldeps tests --- clippy_lints/src/suspicious_operation_groupings.rs | 2 +- clippy_lints/src/unnested_or_patterns.rs | 2 +- clippy_utils/src/ast_utils.rs | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/clippy_lints/src/suspicious_operation_groupings.rs b/clippy_lints/src/suspicious_operation_groupings.rs index 23d6e2a84..d10f10ef8 100644 --- a/clippy_lints/src/suspicious_operation_groupings.rs +++ b/clippy_lints/src/suspicious_operation_groupings.rs @@ -586,7 +586,7 @@ fn ident_difference_expr_with_base_location( | (ForLoop(_, _, _, _), ForLoop(_, _, _, _)) | (While(_, _, _), While(_, _, _)) | (If(_, _, _), If(_, _, _)) - | (Let(_, _, _), Let(_, _, _)) + | (Let(_, _, _, _), Let(_, _, _, _)) | (Type(_, _), Type(_, _)) | (Cast(_, _), Cast(_, _)) | (Lit(_), Lit(_)) diff --git a/clippy_lints/src/unnested_or_patterns.rs b/clippy_lints/src/unnested_or_patterns.rs index 9cf595772..766a54814 100644 --- a/clippy_lints/src/unnested_or_patterns.rs +++ b/clippy_lints/src/unnested_or_patterns.rs @@ -68,7 +68,7 @@ impl EarlyLintPass for UnnestedOrPatterns { fn check_expr(&mut self, cx: &EarlyContext<'_>, e: &ast::Expr) { if self.msrv.meets(msrvs::OR_PATTERNS) { - if let ast::ExprKind::Let(pat, _, _) = &e.kind { + if let ast::ExprKind::Let(pat, _, _, _) = &e.kind { lint_unnested_or_patterns(cx, pat); } } diff --git a/clippy_utils/src/ast_utils.rs b/clippy_utils/src/ast_utils.rs index 140cfa219..a78ff0202 100644 --- a/clippy_utils/src/ast_utils.rs +++ b/clippy_utils/src/ast_utils.rs @@ -166,7 +166,7 @@ pub fn eq_expr(l: &Expr, r: &Expr) -> bool { (Unary(lo, l), Unary(ro, r)) => mem::discriminant(lo) == mem::discriminant(ro) && eq_expr(l, r), (Lit(l), Lit(r)) => l == r, (Cast(l, lt), Cast(r, rt)) | (Type(l, lt), Type(r, rt)) => eq_expr(l, r) && eq_ty(lt, rt), - (Let(lp, le, _), Let(rp, re, _)) => eq_pat(lp, rp) && eq_expr(le, re), + (Let(lp, le, _, _), Let(rp, re, _, _)) => eq_pat(lp, rp) && eq_expr(le, re), (If(lc, lt, le), If(rc, rt, re)) => eq_expr(lc, rc) && eq_block(lt, rt) && eq_expr_opt(le, re), (While(lc, lt, ll), While(rc, rt, rl)) => eq_label(ll, rl) && eq_expr(lc, rc) && eq_block(lt, rt), (ForLoop(lp, li, lt, ll), ForLoop(rp, ri, rt, rl)) => { From 471469d30facd25ed3072524694e369aeb72082c Mon Sep 17 00:00:00 2001 From: Philipp Krones Date: Tue, 12 Sep 2023 18:13:53 +0200 Subject: [PATCH 06/26] Merge commit '98363cbf6a7c3f8b571a7d92a3c645bb4376e4a6' into clippyup --- .github/driver.sh | 2 +- .github/workflows/clippy_bors.yml | 33 +- CHANGELOG.md | 5 + Cargo.toml | 2 +- book/src/SUMMARY.md | 3 + book/src/development/emitting_lints.md | 217 ++++++++ book/src/development/trait_checking.md | 105 ++++ book/src/development/writing_tests.md | 218 ++++++++ book/src/lint_configuration.md | 24 + clippy_lints/src/declared_lints.rs | 6 +- .../src/default_union_representation.rs | 3 + clippy_lints/src/dereference.rs | 31 +- clippy_lints/src/derivable_impls.rs | 3 +- clippy_lints/src/disallowed_macros.rs | 11 +- clippy_lints/src/doc.rs | 2 +- clippy_lints/src/if_then_some_else_none.rs | 18 +- clippy_lints/src/ignored_unit_patterns.rs | 13 +- clippy_lints/src/implied_bounds_in_impls.rs | 242 ++++++--- clippy_lints/src/lib.rs | 9 +- clippy_lints/src/loops/explicit_iter_loop.rs | 17 +- clippy_lints/src/loops/mod.rs | 10 +- clippy_lints/src/loops/never_loop.rs | 268 +++++----- clippy_lints/src/manual_range_patterns.rs | 129 +++-- .../src/methods/iter_out_of_bounds.rs | 106 ++++ .../src/methods/iter_overeager_cloned.rs | 2 +- clippy_lints/src/methods/mod.rs | 58 ++- .../src/missing_asserts_for_indexing.rs | 391 +++++++++++++++ ...orrect_impls.rs => non_canonical_impls.rs} | 45 +- .../src/operators/arithmetic_side_effects.rs | 16 +- clippy_lints/src/operators/float_cmp.rs | 2 +- clippy_lints/src/raw_strings.rs | 89 +++- clippy_lints/src/renamed_lints.rs | 4 +- .../src/slow_vector_initialization.rs | 12 +- clippy_lints/src/std_instead_of_core.rs | 26 +- .../src/undocumented_unsafe_blocks.rs | 107 ++-- clippy_lints/src/unit_return_expecting_ord.rs | 2 +- clippy_lints/src/unwrap.rs | 111 ++++- clippy_lints/src/utils/conf.rs | 20 + clippy_utils/src/lib.rs | 4 +- clippy_utils/src/paths.rs | 2 + clippy_utils/src/source.rs | 2 +- clippy_utils/src/sugg.rs | 2 +- clippy_utils/src/ty.rs | 7 +- clippy_utils/src/ty/type_certainty/mod.rs | 2 +- clippy_utils/src/usage.rs | 13 +- rust-toolchain | 2 +- tests/compile-test.rs | 45 +- .../cargo_common_metadata/fail/Cargo.stderr | 1 + .../fail_publish/Cargo.stderr | 1 + .../fail_publish_true/Cargo.stderr | 1 + .../ui-cargo/duplicate_mod/fail/Cargo.stderr | 1 + tests/ui-cargo/feature_name/fail/Cargo.stderr | 2 + .../module_style/fail_mod/Cargo.stderr | 1 + .../module_style/fail_mod_remap/Cargo.stderr | 1 + .../module_style/fail_no_mod/Cargo.stderr | 1 + .../multiple_crate_versions/fail/Cargo.stderr | 1 + .../wildcard_dependencies/fail/Cargo.stderr | 1 + tests/ui-internal/check_formulation.stderr | 1 + tests/ui-internal/if_chain_style.stderr | 1 + tests/ui-internal/invalid_paths.stderr | 1 + ...unnecessary_def_path_hardcoded_path.stderr | 1 + .../disallowed_macros/auxiliary/macros.rs | 15 + tests/ui-toml/disallowed_macros/clippy.toml | 2 + .../disallowed_macros/disallowed_macros.rs | 5 +- .../disallowed_macros.stderr | 22 +- .../auxiliary/proc_macros.rs | 469 ------------------ .../excessive_nesting/excessive_nesting.rs | 4 +- .../toml_unknown_key/conf_unknown_key.stderr | 2 + .../auxiliary/proc_macro_unsafe.rs | 13 - .../undocumented_unsafe_blocks.rs | 16 +- tests/ui/bool_comparison.fixed | 2 +- tests/ui/bool_comparison.rs | 2 +- ...ze_32bit.stderr => cast_size.32bit.stderr} | 56 ++- ...ast_size.stderr => cast_size.64bit.stderr} | 34 +- tests/ui/cast_size.rs | 31 +- tests/ui/cast_size_32bit.rs | 56 --- .../ui/checked_unwrap/simple_conditionals.rs | 51 ++ .../checked_unwrap/simple_conditionals.stderr | 70 ++- tests/ui/clone_on_copy_impl.rs | 2 +- tests/ui/crashes/ice-11337.rs | 9 + tests/ui/crashes/ice-11422.fixed | 25 + tests/ui/crashes/ice-11422.rs | 25 + tests/ui/crashes/ice-11422.stderr | 16 + tests/ui/crashes/ice-360.rs | 3 +- tests/ui/crashes/ice-360.stderr | 20 +- tests/ui/derivable_impls.fixed | 13 + tests/ui/derivable_impls.rs | 13 + tests/ui/derive.rs | 6 +- tests/ui/derive.stderr | 20 +- tests/ui/derive_ord_xor_partial_ord.rs | 2 +- tests/ui/empty_loop.rs | 3 + tests/ui/empty_loop.stderr | 4 +- tests/ui/enum_clike_unportable_variant.rs | 2 +- tests/ui/enum_clike_unportable_variant.stderr | 17 +- tests/ui/explicit_auto_deref.fixed | 30 +- tests/ui/explicit_auto_deref.rs | 28 ++ tests/ui/explicit_auto_deref.stderr | 12 +- tests/ui/explicit_iter_loop.fixed | 7 +- tests/ui/explicit_iter_loop.rs | 1 + tests/ui/explicit_iter_loop.stderr | 65 +-- tests/ui/float_cmp.rs | 13 + tests/ui/float_cmp.stderr | 12 +- ...stderr => fn_to_numeric_cast.32bit.stderr} | 62 +-- ...stderr => fn_to_numeric_cast.64bit.stderr} | 44 +- tests/ui/fn_to_numeric_cast.rs | 27 +- tests/ui/fn_to_numeric_cast_32bit.rs | 80 --- tests/ui/if_then_some_else_none.rs | 12 + tests/ui/ignored_unit_patterns.fixed | 16 +- tests/ui/ignored_unit_patterns.rs | 16 +- tests/ui/ignored_unit_patterns.stderr | 10 +- tests/ui/implied_bounds_in_impls.fixed | 57 +++ tests/ui/implied_bounds_in_impls.rs | 57 +++ tests/ui/implied_bounds_in_impls.stderr | 74 ++- tests/ui/iter_out_of_bounds.rs | 71 +++ tests/ui/iter_out_of_bounds.stderr | 119 +++++ tests/ui/iter_overeager_cloned.fixed | 6 +- tests/ui/iter_overeager_cloned.rs | 2 - tests/ui/iter_overeager_cloned.stderr | 18 +- tests/ui/iter_skip_next.fixed | 1 + tests/ui/iter_skip_next.rs | 1 + tests/ui/iter_skip_next.stderr | 14 +- tests/ui/iter_skip_next_unfixable.rs | 2 +- tests/ui/iter_skip_zero.fixed | 2 +- tests/ui/iter_skip_zero.rs | 2 +- tests/ui/large_enum_variant.32bit.stderr | 280 +++++++++++ ...stderr => large_enum_variant.64bit.stderr} | 44 +- tests/ui/large_enum_variant.rs | 1 + tests/ui/manual_range_patterns.fixed | 17 +- tests/ui/manual_range_patterns.rs | 11 + tests/ui/manual_range_patterns.stderr | 66 ++- tests/ui/missing_asserts_for_indexing.fixed | 121 +++++ tests/ui/missing_asserts_for_indexing.rs | 121 +++++ tests/ui/missing_asserts_for_indexing.stderr | 253 ++++++++++ .../missing_asserts_for_indexing_unfixable.rs | 49 ++ ...sing_asserts_for_indexing_unfixable.stderr | 164 ++++++ tests/ui/needless_borrow.fixed | 13 + tests/ui/needless_borrow.rs | 13 + tests/ui/needless_raw_string.fixed | 13 +- tests/ui/needless_raw_string.rs | 13 +- tests/ui/needless_raw_string.stderr | 48 +- tests/ui/needless_raw_string_hashes.fixed | 19 +- tests/ui/needless_raw_string_hashes.rs | 19 +- tests/ui/needless_raw_string_hashes.stderr | 144 +++++- tests/ui/never_loop.rs | 55 +- tests/ui/never_loop.stderr | 27 +- ...e.fixed => non_canonical_clone_impl.fixed} | 0 ...py_type.rs => non_canonical_clone_impl.rs} | 0 ...stderr => non_canonical_clone_impl.stderr} | 19 +- ...d => non_canonical_partial_ord_impl.fixed} | 0 ...e.rs => non_canonical_partial_ord_impl.rs} | 0 ... => non_canonical_partial_ord_impl.stderr} | 11 +- ..._canonical_partial_ord_impl_fully_qual.rs} | 3 - ...onical_partial_ord_impl_fully_qual.stderr} | 14 +- tests/ui/rename.fixed | 8 +- tests/ui/rename.rs | 8 +- tests/ui/rename.stderr | 132 ++--- tests/ui/result_large_err.rs | 2 + tests/ui/result_large_err.stderr | 24 +- tests/ui/similar_names.rs | 1 + tests/ui/similar_names.stderr | 28 +- tests/ui/single_call_fn.rs | 1 + tests/ui/single_call_fn.stderr | 16 +- tests/ui/slow_vector_initialization.rs | 16 +- tests/ui/slow_vector_initialization.stderr | 12 +- tests/ui/std_instead_of_core.fixed | 62 +++ tests/ui/std_instead_of_core.rs | 1 - tests/ui/std_instead_of_core.stderr | 71 +-- tests/ui/transmute_32bit.stderr | 30 +- .../unnecessary_struct_initialization.fixed | 2 +- tests/ui/unnecessary_struct_initialization.rs | 2 +- tests/ui/vec.fixed | 1 + tests/ui/vec.rs | 1 + tests/ui/vec.stderr | 10 +- tests/ui/write_literal_2.stderr | 4 +- 174 files changed, 4682 insertions(+), 1635 deletions(-) create mode 100644 book/src/development/emitting_lints.md create mode 100644 book/src/development/trait_checking.md create mode 100644 book/src/development/writing_tests.md create mode 100644 clippy_lints/src/methods/iter_out_of_bounds.rs create mode 100644 clippy_lints/src/missing_asserts_for_indexing.rs rename clippy_lints/src/{incorrect_impls.rs => non_canonical_impls.rs} (88%) delete mode 100644 tests/ui-toml/excessive_nesting/auxiliary/proc_macros.rs delete mode 100644 tests/ui-toml/undocumented_unsafe_blocks/auxiliary/proc_macro_unsafe.rs rename tests/ui/{cast_size_32bit.stderr => cast_size.32bit.stderr} (78%) rename tests/ui/{cast_size.stderr => cast_size.64bit.stderr} (94%) delete mode 100644 tests/ui/cast_size_32bit.rs create mode 100644 tests/ui/crashes/ice-11337.rs create mode 100644 tests/ui/crashes/ice-11422.fixed create mode 100644 tests/ui/crashes/ice-11422.rs create mode 100644 tests/ui/crashes/ice-11422.stderr rename tests/ui/{fn_to_numeric_cast_32bit.stderr => fn_to_numeric_cast.32bit.stderr} (70%) rename tests/ui/{fn_to_numeric_cast.stderr => fn_to_numeric_cast.64bit.stderr} (85%) delete mode 100644 tests/ui/fn_to_numeric_cast_32bit.rs create mode 100644 tests/ui/iter_out_of_bounds.rs create mode 100644 tests/ui/iter_out_of_bounds.stderr create mode 100644 tests/ui/large_enum_variant.32bit.stderr rename tests/ui/{large_enum_variant.stderr => large_enum_variant.64bit.stderr} (91%) create mode 100644 tests/ui/missing_asserts_for_indexing.fixed create mode 100644 tests/ui/missing_asserts_for_indexing.rs create mode 100644 tests/ui/missing_asserts_for_indexing.stderr create mode 100644 tests/ui/missing_asserts_for_indexing_unfixable.rs create mode 100644 tests/ui/missing_asserts_for_indexing_unfixable.stderr rename tests/ui/{incorrect_clone_impl_on_copy_type.fixed => non_canonical_clone_impl.fixed} (100%) rename tests/ui/{incorrect_clone_impl_on_copy_type.rs => non_canonical_clone_impl.rs} (100%) rename tests/ui/{incorrect_clone_impl_on_copy_type.stderr => non_canonical_clone_impl.stderr} (54%) rename tests/ui/{incorrect_partial_ord_impl_on_ord_type.fixed => non_canonical_partial_ord_impl.fixed} (100%) rename tests/ui/{incorrect_partial_ord_impl_on_ord_type.rs => non_canonical_partial_ord_impl.rs} (100%) rename tests/ui/{incorrect_partial_ord_impl_on_ord_type.stderr => non_canonical_partial_ord_impl.stderr} (63%) rename tests/ui/{incorrect_partial_ord_impl_on_ord_type_fully_qual.rs => non_canonical_partial_ord_impl_fully_qual.rs} (82%) rename tests/ui/{incorrect_partial_ord_impl_on_ord_type_fully_qual.stderr => non_canonical_partial_ord_impl_fully_qual.stderr} (67%) create mode 100644 tests/ui/std_instead_of_core.fixed diff --git a/.github/driver.sh b/.github/driver.sh index 798782340..c05c6ecc1 100644 --- a/.github/driver.sh +++ b/.github/driver.sh @@ -30,7 +30,7 @@ unset CARGO_MANIFEST_DIR # Run a lint and make sure it produces the expected output. It's also expected to exit with code 1 # FIXME: How to match the clippy invocation in compile-test.rs? ./target/debug/clippy-driver -Dwarnings -Aunused -Zui-testing --emit metadata --crate-type bin tests/ui/double_neg.rs 2>double_neg.stderr && exit 1 -sed -e "s,tests/ui,\$DIR," -e "/= help/d" double_neg.stderr >normalized.stderr +sed -e "s,tests/ui,\$DIR," -e "/= help: for/d" double_neg.stderr > normalized.stderr diff -u normalized.stderr tests/ui/double_neg.stderr # make sure "clippy-driver --rustc --arg" and "rustc --arg" behave the same diff --git a/.github/workflows/clippy_bors.yml b/.github/workflows/clippy_bors.yml index 5c69714bc..9b96f8dc2 100644 --- a/.github/workflows/clippy_bors.yml +++ b/.github/workflows/clippy_bors.yml @@ -52,24 +52,14 @@ jobs: needs: changelog strategy: matrix: - os: [ubuntu-latest, windows-latest, macos-latest] - host: [x86_64-unknown-linux-gnu, i686-unknown-linux-gnu, x86_64-apple-darwin, x86_64-pc-windows-msvc] - exclude: + include: - os: ubuntu-latest - host: x86_64-apple-darwin + host: x86_64-unknown-linux-gnu - os: ubuntu-latest - host: x86_64-pc-windows-msvc - - os: macos-latest - host: x86_64-unknown-linux-gnu - - os: macos-latest - host: i686-unknown-linux-gnu - - os: macos-latest - host: x86_64-pc-windows-msvc - - os: windows-latest - host: x86_64-unknown-linux-gnu - - os: windows-latest host: i686-unknown-linux-gnu - os: windows-latest + host: x86_64-pc-windows-msvc + - os: macos-latest host: x86_64-apple-darwin runs-on: ${{ matrix.os }} @@ -84,8 +74,17 @@ jobs: - name: Checkout uses: actions/checkout@v3 + - name: Install i686 dependencies + if: matrix.host == 'i686-unknown-linux-gnu' + run: | + sudo dpkg --add-architecture i386 + sudo apt-get update + sudo apt-get install gcc-multilib zlib1g-dev:i386 + - name: Install toolchain - run: rustup show active-toolchain + run: | + rustup set default-host ${{ matrix.host }} + rustup show active-toolchain # Run - name: Set LD_LIBRARY_PATH (Linux) @@ -109,11 +108,11 @@ jobs: run: cargo build --tests --features deny-warnings,internal - name: Test - if: runner.os == 'Linux' + if: matrix.host == 'x86_64-unknown-linux-gnu' run: cargo test --features deny-warnings,internal - name: Test - if: runner.os != 'Linux' + if: matrix.host != 'x86_64-unknown-linux-gnu' run: cargo test --features deny-warnings,internal -- --skip dogfood - name: Test clippy_lints diff --git a/CHANGELOG.md b/CHANGELOG.md index 92cc19edb..a7ae4a0ee 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -5031,6 +5031,7 @@ Released 2018-09-13 [`iter_nth_zero`]: https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth_zero [`iter_on_empty_collections`]: https://rust-lang.github.io/rust-clippy/master/index.html#iter_on_empty_collections [`iter_on_single_items`]: https://rust-lang.github.io/rust-clippy/master/index.html#iter_on_single_items +[`iter_out_of_bounds`]: https://rust-lang.github.io/rust-clippy/master/index.html#iter_out_of_bounds [`iter_overeager_cloned`]: https://rust-lang.github.io/rust-clippy/master/index.html#iter_overeager_cloned [`iter_skip_next`]: https://rust-lang.github.io/rust-clippy/master/index.html#iter_skip_next [`iter_skip_zero`]: https://rust-lang.github.io/rust-clippy/master/index.html#iter_skip_zero @@ -5131,6 +5132,7 @@ Released 2018-09-13 [`misnamed_getters`]: https://rust-lang.github.io/rust-clippy/master/index.html#misnamed_getters [`misrefactored_assign_op`]: https://rust-lang.github.io/rust-clippy/master/index.html#misrefactored_assign_op [`missing_assert_message`]: https://rust-lang.github.io/rust-clippy/master/index.html#missing_assert_message +[`missing_asserts_for_indexing`]: https://rust-lang.github.io/rust-clippy/master/index.html#missing_asserts_for_indexing [`missing_const_for_fn`]: https://rust-lang.github.io/rust-clippy/master/index.html#missing_const_for_fn [`missing_docs_in_private_items`]: https://rust-lang.github.io/rust-clippy/master/index.html#missing_docs_in_private_items [`missing_enforced_import_renames`]: https://rust-lang.github.io/rust-clippy/master/index.html#missing_enforced_import_renames @@ -5204,6 +5206,8 @@ Released 2018-09-13 [`no_effect_underscore_binding`]: https://rust-lang.github.io/rust-clippy/master/index.html#no_effect_underscore_binding [`no_mangle_with_rust_abi`]: https://rust-lang.github.io/rust-clippy/master/index.html#no_mangle_with_rust_abi [`non_ascii_literal`]: https://rust-lang.github.io/rust-clippy/master/index.html#non_ascii_literal +[`non_canonical_clone_impl`]: https://rust-lang.github.io/rust-clippy/master/index.html#non_canonical_clone_impl +[`non_canonical_partial_ord_impl`]: https://rust-lang.github.io/rust-clippy/master/index.html#non_canonical_partial_ord_impl [`non_minimal_cfg`]: https://rust-lang.github.io/rust-clippy/master/index.html#non_minimal_cfg [`non_octal_unix_permissions`]: https://rust-lang.github.io/rust-clippy/master/index.html#non_octal_unix_permissions [`non_send_fields_in_send_ty`]: https://rust-lang.github.io/rust-clippy/master/index.html#non_send_fields_in_send_ty @@ -5570,4 +5574,5 @@ Released 2018-09-13 [`allow-one-hash-in-raw-strings`]: https://doc.rust-lang.org/clippy/lint_configuration.html#allow-one-hash-in-raw-strings [`absolute-paths-max-segments`]: https://doc.rust-lang.org/clippy/lint_configuration.html#absolute-paths-max-segments [`absolute-paths-allowed-crates`]: https://doc.rust-lang.org/clippy/lint_configuration.html#absolute-paths-allowed-crates +[`enforce-iter-loop-reborrow`]: https://doc.rust-lang.org/clippy/lint_configuration.html#enforce-iter-loop-reborrow diff --git a/Cargo.toml b/Cargo.toml index 7c78beb5d..2d8b590db 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -27,7 +27,7 @@ tempfile = { version = "3.2", optional = true } termize = "0.1" [dev-dependencies] -ui_test = "0.18.1" +ui_test = "0.20" tester = "0.9" regex = "1.5" toml = "0.7.3" diff --git a/book/src/SUMMARY.md b/book/src/SUMMARY.md index daaefd06a..b02457307 100644 --- a/book/src/SUMMARY.md +++ b/book/src/SUMMARY.md @@ -14,8 +14,11 @@ - [Basics](development/basics.md) - [Adding Lints](development/adding_lints.md) - [Defining Lints](development/defining_lints.md) + - [Writing tests](development/writing_tests.md) - [Lint Passes](development/lint_passes.md) + - [Emitting lints](development/emitting_lints.md) - [Type Checking](development/type_checking.md) + - [Trait Checking](development/trait_checking.md) - [Method Checking](development/method_checking.md) - [Macro Expansions](development/macro_expansions.md) - [Common Tools](development/common_tools_writing_lints.md) diff --git a/book/src/development/emitting_lints.md b/book/src/development/emitting_lints.md new file mode 100644 index 000000000..a12f6aa91 --- /dev/null +++ b/book/src/development/emitting_lints.md @@ -0,0 +1,217 @@ +# Emitting a lint + +Once we have [defined a lint](defining_lints.md), written [UI +tests](writing_tests.md) and chosen [the lint pass](lint_passes.md) for the lint, +we can begin the implementation of the lint logic so that we can emit it and +gradually work towards a lint that behaves as expected. + +Note that we will not go into concrete implementation of a lint logic in this +chapter. We will go into details in later chapters as well as in two examples of +real Clippy lints. + +To emit a lint, we must implement a pass (see [Lint Passes](lint_passes.md)) for +the lint that we have declared. In this example we'll implement a "late" lint, +so take a look at the [LateLintPass][late_lint_pass] documentation, which +provides an abundance of methods that we can implement for our lint. + +```rust +pub trait LateLintPass<'tcx>: LintPass { + // Trait methods +} +``` + +By far the most common method used for Clippy lints is [`check_expr` +method][late_check_expr], this is because Rust is an expression language and, +more often than not, the lint we want to work on must examine expressions. + +> _Note:_ If you don't fully understand what expressions are in Rust, take a +> look at the official documentation on [expressions][rust_expressions] + +Other common ones include the [`check_fn` method][late_check_fn] and the +[`check_item` method][late_check_item]. + +### Emitting a lint + +Inside the trait method that we implement, we can write down the lint logic and +emit the lint with suggestions. + +Clippy's [diagnostics] provides quite a few diagnostic functions that we can use +to emit lints. Take a look at the documentation to pick one that suits your +lint's needs the best. Some common ones you will encounter in the Clippy +repository includes: + +- [`span_lint`]: Emits a lint without providing any other information +- [`span_lint_and_note`]: Emits a lint and adds a note +- [`span_lint_and_help`]: Emits a lint and provides a helpful message +- [`span_lint_and_sugg`]: Emits a lint and provides a suggestion to fix the code +- [`span_lint_and_then`]: Like `span_lint`, but allows for a lot of output + customization. + +```rust +impl<'tcx> LateLintPass<'tcx> for LintName { + fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { + // Imagine that `some_lint_expr_logic` checks for requirements for emitting the lint + if some_lint_expr_logic(expr) { + span_lint_and_help( + cx, // < The context + LINT_NAME, // < The name of the lint in ALL CAPS + expr.span, // < The span to lint + "message on why the lint is emitted", + None, // < An optional help span (to highlight something in the lint) + "message that provides a helpful suggestion", + ); + } + } +} +``` + +> Note: The message should be matter of fact and avoid capitalization and +> punctuation. If multiple sentences are needed, the messages should probably be +> split up into an error + a help / note / suggestion message. + +## Suggestions: Automatic fixes + +Some lints know what to change in order to fix the code. For example, the lint +[`range_plus_one`][range_plus_one] warns for ranges where the user wrote `x..y + +1` instead of using an [inclusive range][inclusive_range] (`x..=y`). The fix to +this code would be changing the `x..y + 1` expression to `x..=y`. **This is +where suggestions come in**. + +A suggestion is a change that the lint provides to fix the issue it is linting. +The output looks something like this (from the example earlier): + +```text +error: an inclusive range would be more readable + --> $DIR/range_plus_minus_one.rs:37:14 + | +LL | for _ in 1..1 + 1 {} + | ^^^^^^^^ help: use: `1..=1` +``` + +**Not all suggestions are always right**, some of them require human +supervision, that's why we have [Applicability][applicability]. + +Applicability indicates confidence in the correctness of the suggestion, some +are always right (`Applicability::MachineApplicable`), but we use +`Applicability::MaybeIncorrect` and others when talking about a suggestion that +may be incorrect. + +### Example + +The same lint `LINT_NAME` but that emits a suggestion would look something like this: + +```rust +impl<'tcx> LateLintPass<'tcx> for LintName { + fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { + // Imagine that `some_lint_expr_logic` checks for requirements for emitting the lint + if some_lint_expr_logic(expr) { + span_lint_and_sugg( // < Note this change + cx, + LINT_NAME, + span, + "message on why the lint is emitted", + "use", + format!("foo + {} * bar", snippet(cx, expr.span, "")), // < Suggestion + Applicability::MachineApplicable, + ); + } + } +} +``` + +Suggestions generally use the [`format!`][format_macro] macro to interpolate the +old values with the new ones. To get code snippets, use one of the `snippet*` +functions from `clippy_utils::source`. + +## How to choose between notes, help messages and suggestions + +Notes are presented separately from the main lint message, they provide useful +information that the user needs to understand why the lint was activated. They +are the most helpful when attached to a span. + +Examples: + +### Notes + +```text +error: calls to `std::mem::forget` with a reference instead of an owned value. Forgetting a reference does nothing. + --> $DIR/drop_forget_ref.rs:10:5 + | +10 | forget(&SomeStruct); + | ^^^^^^^^^^^^^^^^^^^ + | + = note: `-D clippy::forget-ref` implied by `-D warnings` +note: argument has type &SomeStruct + --> $DIR/drop_forget_ref.rs:10:12 + | +10 | forget(&SomeStruct); + | ^^^^^^^^^^^ +``` + +### Help Messages + +Help messages are specifically to help the user. These are used in situation +where you can't provide a specific machine applicable suggestion. They can also +be attached to a span. + +Example: + +```text +error: constant division of 0.0 with 0.0 will always result in NaN + --> $DIR/zero_div_zero.rs:6:25 + | +6 | let other_f64_nan = 0.0f64 / 0.0; + | ^^^^^^^^^^^^ + | + = help: consider using `f64::NAN` if you would like a constant representing NaN +``` + +### Suggestions + +Suggestions are the most helpful, they are changes to the source code to fix the +error. The magic in suggestions is that tools like `rustfix` can detect them and +automatically fix your code. + +Example: + +```text +error: This `.fold` can be more succinctly expressed as `.any` +--> $DIR/methods.rs:390:13 + | +390 | let _ = (0..3).fold(false, |acc, x| acc || x > 2); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `.any(|x| x > 2)` + | +``` + +### Snippets + +Snippets are pieces of the source code (as a string), they are extracted +generally using the [`snippet`][snippet_fn] function. + +For example, if you want to know how an item looks (and you know the item's +span), you could use `snippet(cx, span, "..")`. + +## Final: Run UI Tests to Emit the Lint + +Now, if we run our [UI test](writing_tests.md), we should see that Clippy now +produces output that contains the lint message we designed. + +The next step is to implement the logic properly, which is a detail that we will +cover in the next chapters. + +[diagnostics]: https://doc.rust-lang.org/nightly/nightly-rustc/clippy_utils/diagnostics/index.html +[late_check_expr]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_lint/trait.LateLintPass.html#method.check_expr +[late_check_fn]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_lint/trait.LateLintPass.html#method.check_fn +[late_check_item]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_lint/trait.LateLintPass.html#method.check_item +[late_lint_pass]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_lint/trait.LateLintPass.html +[rust_expressions]: https://doc.rust-lang.org/reference/expressions.html +[`span_lint`]: https://doc.rust-lang.org/beta/nightly-rustc/clippy_utils/diagnostics/fn.span_lint.html +[`span_lint_and_note`]: https://doc.rust-lang.org/beta/nightly-rustc/clippy_utils/diagnostics/fn.span_lint_and_note.html +[`span_lint_and_help`]: https://doc.rust-lang.org/nightly/nightly-rustc/clippy_utils/diagnostics/fn.span_lint_and_help.html +[`span_lint_and_sugg`]: https://doc.rust-lang.org/nightly/nightly-rustc/clippy_utils/diagnostics/fn.span_lint_and_sugg.html +[`span_lint_and_then`]: https://doc.rust-lang.org/beta/nightly-rustc/clippy_utils/diagnostics/fn.span_lint_and_then.html +[range_plus_one]: https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one +[inclusive_range]: https://doc.rust-lang.org/std/ops/struct.RangeInclusive.html +[applicability]: https://doc.rust-lang.org/beta/nightly-rustc/rustc_errors/enum.Applicability.html +[snippet_fn]: https://doc.rust-lang.org/beta/nightly-rustc/clippy_utils/source/fn.snippet.html +[format_macro]: https://doc.rust-lang.org/std/macro.format.html diff --git a/book/src/development/trait_checking.md b/book/src/development/trait_checking.md new file mode 100644 index 000000000..fb263922c --- /dev/null +++ b/book/src/development/trait_checking.md @@ -0,0 +1,105 @@ +# Trait Checking + +Besides [type checking](type_checking.md), we might want to examine if +a specific type `Ty` implements certain trait when implementing a lint. +There are three approaches to achieve this, depending on if the target trait +that we want to examine has a [diagnostic item][diagnostic_items], +[lang item][lang_items], or neither. + +## Using Diagnostic Items + +As explained in the [Rust Compiler Development Guide][rustc_dev_guide], diagnostic items +are introduced for identifying types via [Symbols][symbol]. + +For instance, if we want to examine whether an expression implements +the `Iterator` trait, we could simply write the following code, +providing the `LateContext` (`cx`), our expression at hand, and +the symbol of the trait in question: + +```rust +use clippy_utils::is_trait_method; +use rustc_hir::Expr; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_span::symbol::sym; + +impl LateLintPass<'_> for CheckIteratorTraitLint { + fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) { + let implements_iterator = cx.tcx.get_diagnostic_item(sym::Iterator).map_or(false, |id| { + implements_trait(cx, cx.typeck_results().expr_ty(arg), id, &[]) + }); + if implements_iterator { + // [...] + } + + } +} +``` + +> **Note**: Refer to [this index][symbol_index] for all the defined `Symbol`s. + +## Using Lang Items + +Besides diagnostic items, we can also use [`lang_items`][lang_items]. +Take a look at the documentation to find that `LanguageItems` contains +all language items defined in the compiler. + +Using one of its `*_trait` method, we could obtain the [DefId] of any +specific item, such as `Clone`, `Copy`, `Drop`, `Eq`, which are familiar +to many Rustaceans. + +For instance, if we want to examine whether an expression `expr` implements +`Drop` trait, we could access `LanguageItems` via our `LateContext`'s +[TyCtxt], which provides a `lang_items` method that will return the id of +`Drop` trait to us. Then, by calling Clippy utils function `implements_trait` +we can check that the `Ty` of the `expr` implements the trait: + +```rust +use clippy_utils::implements_trait; +use rustc_hir::Expr; +use rustc_lint::{LateContext, LateLintPass}; + +impl LateLintPass<'_> for CheckDropTraitLint { + fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) { + let ty = cx.typeck_results().expr_ty(expr); + if cx.tcx.lang_items() + .drop_trait() + .map_or(false, |id| implements_trait(cx, ty, id, &[])) { + println!("`expr` implements `Drop` trait!"); + } + } +} +``` + +## Using Type Path + +If neither diagnostic item nor a language item is available, we can use +[`clippy_utils::paths`][paths] with the `match_trait_method` to determine trait +implementation. + +> **Note**: This approach should be avoided if possible, the best thing to do would be to make a PR to [`rust-lang/rust`][rust] adding a diagnostic item. + +Below, we check if the given `expr` implements the `Iterator`'s trait method `cloned` : + +```rust +use clippy_utils::{match_trait_method, paths}; +use rustc_hir::Expr; +use rustc_lint::{LateContext, LateLintPass}; + +impl LateLintPass<'_> for CheckTokioAsyncReadExtTrait { + fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) { + if match_trait_method(cx, expr, &paths::CORE_ITER_CLONED) { + println!("`expr` implements `CORE_ITER_CLONED` trait!"); + } + } +} +``` + +[DefId]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_hir/def_id/struct.DefId.html +[diagnostic_items]: https://rustc-dev-guide.rust-lang.org/diagnostics/diagnostic-items.html +[lang_items]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_hir/lang_items/struct.LanguageItems.html +[paths]: https://github.com/rust-lang/rust-clippy/blob/master/clippy_utils/src/paths.rs +[rustc_dev_guide]: https://rustc-dev-guide.rust-lang.org/ +[symbol]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_span/symbol/struct.Symbol.html +[symbol_index]: https://doc.rust-lang.org/beta/nightly-rustc/rustc_span/symbol/sym/index.html +[TyCtxt]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/context/struct.TyCtxt.html +[rust]: https://github.com/rust-lang/rust diff --git a/book/src/development/writing_tests.md b/book/src/development/writing_tests.md new file mode 100644 index 000000000..8937e0d8e --- /dev/null +++ b/book/src/development/writing_tests.md @@ -0,0 +1,218 @@ +# Testing + +Developing lints for Clippy is a Test-Driven Development (TDD) process because +our first task before implementing any logic for a new lint is to write some test cases. + +## Develop Lints with Tests + +When we develop Clippy, we enter a complex and chaotic realm full of +programmatic issues, stylistic errors, illogical code and non-adherence to convention. +Tests are the first layer of order we can leverage to define when and where +we want a new lint to trigger or not. + +Moreover, writing tests first help Clippy developers to find a balance for +the first iteration of and further enhancements for a lint. +With test cases on our side, we will not have to worry about over-engineering +a lint on its first version nor missing out some obvious edge cases of the lint. +This approach empowers us to iteratively enhance each lint. + +## Clippy UI Tests + +We use **UI tests** for testing in Clippy. These UI tests check that the output +of Clippy is exactly as we expect it to be. Each test is just a plain Rust file +that contains the code we want to check. + +The output of Clippy is compared against a `.stderr` file. Note that you don't +have to create this file yourself. We'll get to generating the `.stderr` files +with the command [`cargo bless`](#cargo-bless) (seen later on). + +### Write Test Cases + +Let us now think about some tests for our imaginary `foo_functions` lint. We +start by opening the test file `tests/ui/foo_functions.rs` that was created by +`cargo dev new_lint`. + +Update the file with some examples to get started: + +```rust +#![warn(clippy::foo_functions)] // < Add this, so the lint is guaranteed to be enabled in this file + +// Impl methods +struct A; +impl A { + pub fn fo(&self) {} + pub fn foo(&self) {} //~ ERROR: function called "foo" + pub fn food(&self) {} +} + +// Default trait methods +trait B { + fn fo(&self) {} + fn foo(&self) {} //~ ERROR: function called "foo" + fn food(&self) {} +} + +// Plain functions +fn fo() {} +fn foo() {} //~ ERROR: function called "foo" +fn food() {} + +fn main() { + // We also don't want to lint method calls + foo(); + let a = A; + a.foo(); +} +``` + +Without actual lint logic to emit the lint when we see a `foo` function name, +this test will just pass, because no lint will be emitted. However, we can now +run the test with the following command: + +```sh +$ TESTNAME=foo_functions cargo uitest +``` + +Clippy will compile and it will conclude with an `ok` for the tests: + +``` +...Clippy warnings and test outputs... +test compile_test ... ok +test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.48s +``` + +This is normal. After all, we wrote a bunch of Rust code but we haven't really +implemented any logic for Clippy to detect `foo` functions and emit a lint. + +As we gradually implement our lint logic, we will keep running this UI test command. +Clippy will begin outputting information that allows us to check if the output is +turning into what we want it to be. + +### Example output + +As our `foo_functions` lint is tested, the output would look something like this: + +``` +failures: +---- compile_test stdout ---- +normalized stderr: +error: function called "foo" + --> $DIR/foo_functions.rs:6:12 + | +LL | pub fn foo(&self) {} + | ^^^ + | + = note: `-D clippy::foo-functions` implied by `-D warnings` +error: function called "foo" + --> $DIR/foo_functions.rs:13:8 + | +LL | fn foo(&self) {} + | ^^^ +error: function called "foo" + --> $DIR/foo_functions.rs:19:4 + | +LL | fn foo() {} + | ^^^ +error: aborting due to 3 previous errors +``` + +Note the *failures* label at the top of the fragment, we'll get rid of it +(saving this output) in the next section. + +> _Note:_ You can run multiple test files by specifying a comma separated list: +> `TESTNAME=foo_functions,bar_methods,baz_structs`. + +### `cargo bless` + +Once we are satisfied with the output, we need to run this command to +generate or update the `.stderr` file for our lint: + +```sh +$ TESTNAME=foo_functions cargo uibless +``` + +This writes the emitted lint suggestions and fixes to the `.stderr` file, with +the reason for the lint, suggested fixes, and line numbers, etc. + +Running `TESTNAME=foo_functions cargo uitest` should pass then. When we commit +our lint, we need to commit the generated `.stderr` files, too. + +In general, you should only commit files changed by `cargo bless` for the +specific lint you are creating/editing. + +> _Note:_ If the generated `.stderr`, and `.fixed` files are empty, +> they should be removed. + +## `toml` Tests + +Some lints can be configured through a `clippy.toml` file. Those configuration +values are tested in `tests/ui-toml`. + +To add a new test there, create a new directory and add the files: + +- `clippy.toml`: Put here the configuration value you want to test. +- `lint_name.rs`: A test file where you put the testing code, that should see a + different lint behavior according to the configuration set in the + `clippy.toml` file. + +The potential `.stderr` and `.fixed` files can again be generated with `cargo +bless`. + +## Cargo Lints + +The process of testing is different for Cargo lints in that now we are +interested in the `Cargo.toml` manifest file. In this case, we also need a +minimal crate associated with that manifest. Those tests are generated in +`tests/ui-cargo`. + +Imagine we have a new example lint that is named `foo_categories`, we can run: + +```sh +$ cargo dev new_lint --name=foo_categories --pass=late --category=cargo +``` + +After running `cargo dev new_lint` we will find by default two new crates, +each with its manifest file: + +* `tests/ui-cargo/foo_categories/fail/Cargo.toml`: this file should cause the + new lint to raise an error. +* `tests/ui-cargo/foo_categories/pass/Cargo.toml`: this file should not trigger + the lint. + +If you need more cases, you can copy one of those crates (under +`foo_categories`) and rename it. + +The process of generating the `.stderr` file is the same as for other lints +and prepending the `TESTNAME` variable to `cargo uitest` works for Cargo lints too. + +## Rustfix Tests + +If the lint you are working on is making use of structured suggestions, +[`rustfix`] will apply the suggestions from the lint to the test file code and +compare that to the contents of a `.fixed` file. + +Structured suggestions tell a user how to fix or re-write certain code that has +been linted with [`span_lint_and_sugg`]. + +Should `span_lint_and_sugg` be used to generate a suggestion, but not all +suggestions lead to valid code, you can use the `//@no-rustfix` comment on top +of the test file, to not run `rustfix` on that file. + +We'll talk about suggestions more in depth in a [later chapter](emitting_lints.md). + +Use `cargo bless` to automatically generate the `.fixed` file after running +the tests. + +[`rustfix`]: https://github.com/rust-lang/rustfix +[`span_lint_and_sugg`]: https://doc.rust-lang.org/beta/nightly-rustc/clippy_utils/diagnostics/fn.span_lint_and_sugg.html + +## Testing Manually + +Manually testing against an example file can be useful if you have added some +`println!`s and the test suite output becomes unreadable. + +To try Clippy with your local modifications, run from the working copy root. + +```sh +$ cargo dev lint input.rs +``` diff --git a/book/src/lint_configuration.md b/book/src/lint_configuration.md index caaad6d11..52c795e04 100644 --- a/book/src/lint_configuration.md +++ b/book/src/lint_configuration.md @@ -751,3 +751,27 @@ Which crates to allow absolute paths from * [`absolute_paths`](https://rust-lang.github.io/rust-clippy/master/index.html#absolute_paths) +## `enforce-iter-loop-reborrow` +#### Example +``` +let mut vec = vec![1, 2, 3]; +let rmvec = &mut vec; +for _ in rmvec.iter() {} +for _ in rmvec.iter_mut() {} +``` + +Use instead: +``` +let mut vec = vec![1, 2, 3]; +let rmvec = &mut vec; +for _ in &*rmvec {} +for _ in &mut *rmvec {} +``` + +**Default Value:** `false` (`bool`) + +--- +**Affected lints:** +* [`explicit_iter_loop`](https://rust-lang.github.io/rust-clippy/master/index.html#explicit_iter_loop) + + diff --git a/clippy_lints/src/declared_lints.rs b/clippy_lints/src/declared_lints.rs index f73f1ed18..a4d40df52 100644 --- a/clippy_lints/src/declared_lints.rs +++ b/clippy_lints/src/declared_lints.rs @@ -211,8 +211,6 @@ pub(crate) static LINTS: &[&crate::LintInfo] = &[ crate::implicit_saturating_sub::IMPLICIT_SATURATING_SUB_INFO, crate::implied_bounds_in_impls::IMPLIED_BOUNDS_IN_IMPLS_INFO, crate::inconsistent_struct_constructor::INCONSISTENT_STRUCT_CONSTRUCTOR_INFO, - crate::incorrect_impls::INCORRECT_CLONE_IMPL_ON_COPY_TYPE_INFO, - crate::incorrect_impls::INCORRECT_PARTIAL_ORD_IMPL_ON_ORD_TYPE_INFO, crate::index_refutable_slice::INDEX_REFUTABLE_SLICE_INFO, crate::indexing_slicing::INDEXING_SLICING_INFO, crate::indexing_slicing::OUT_OF_BOUNDS_INDEXING_INFO, @@ -365,6 +363,7 @@ pub(crate) static LINTS: &[&crate::LintInfo] = &[ crate::methods::ITER_NTH_ZERO_INFO, crate::methods::ITER_ON_EMPTY_COLLECTIONS_INFO, crate::methods::ITER_ON_SINGLE_ITEMS_INFO, + crate::methods::ITER_OUT_OF_BOUNDS_INFO, crate::methods::ITER_OVEREAGER_CLONED_INFO, crate::methods::ITER_SKIP_NEXT_INFO, crate::methods::ITER_SKIP_ZERO_INFO, @@ -456,6 +455,7 @@ pub(crate) static LINTS: &[&crate::LintInfo] = &[ crate::misc_early::ZERO_PREFIXED_LITERAL_INFO, crate::mismatching_type_param_order::MISMATCHING_TYPE_PARAM_ORDER_INFO, crate::missing_assert_message::MISSING_ASSERT_MESSAGE_INFO, + crate::missing_asserts_for_indexing::MISSING_ASSERTS_FOR_INDEXING_INFO, crate::missing_const_for_fn::MISSING_CONST_FOR_FN_INFO, crate::missing_doc::MISSING_DOCS_IN_PRIVATE_ITEMS_INFO, crate::missing_enforced_import_rename::MISSING_ENFORCED_IMPORT_RENAMES_INFO, @@ -496,6 +496,8 @@ pub(crate) static LINTS: &[&crate::LintInfo] = &[ crate::no_effect::NO_EFFECT_UNDERSCORE_BINDING_INFO, crate::no_effect::UNNECESSARY_OPERATION_INFO, crate::no_mangle_with_rust_abi::NO_MANGLE_WITH_RUST_ABI_INFO, + crate::non_canonical_impls::NON_CANONICAL_CLONE_IMPL_INFO, + crate::non_canonical_impls::NON_CANONICAL_PARTIAL_ORD_IMPL_INFO, crate::non_copy_const::BORROW_INTERIOR_MUTABLE_CONST_INFO, crate::non_copy_const::DECLARE_INTERIOR_MUTABLE_CONST_INFO, crate::non_expressive_names::JUST_UNDERSCORES_AND_DIGITS_INFO, diff --git a/clippy_lints/src/default_union_representation.rs b/clippy_lints/src/default_union_representation.rs index 03b5a2d6d..bbce6e1dd 100644 --- a/clippy_lints/src/default_union_representation.rs +++ b/clippy_lints/src/default_union_representation.rs @@ -69,6 +69,9 @@ impl<'tcx> LateLintPass<'tcx> for DefaultUnionRepresentation { } /// Returns true if the given item is a union with at least two non-ZST fields. +/// (ZST fields having an arbitrary offset is completely inconsequential, and +/// if there is only one field left after ignoring ZST fields then the offset +/// of that field does not matter either.) fn is_union_with_two_non_zst_fields(cx: &LateContext<'_>, item: &Item<'_>) -> bool { if let ItemKind::Union(data, _) = &item.kind { data.fields().iter().filter(|f| !is_zst(cx, f.ty)).count() >= 2 diff --git a/clippy_lints/src/dereference.rs b/clippy_lints/src/dereference.rs index 58c278550..8090f821d 100644 --- a/clippy_lints/src/dereference.rs +++ b/clippy_lints/src/dereference.rs @@ -3,7 +3,7 @@ use clippy_utils::mir::{enclosing_mir, expr_local, local_assignments, used_exact use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::{snippet_with_applicability, snippet_with_context}; use clippy_utils::sugg::has_enclosing_paren; -use clippy_utils::ty::{is_copy, peel_mid_ty_refs}; +use clippy_utils::ty::{implements_trait, is_copy, peel_mid_ty_refs}; use clippy_utils::{ expr_use_ctxt, get_parent_expr, get_parent_node, is_lint_allowed, path_to_local, DefinedTy, ExprUseNode, }; @@ -33,7 +33,6 @@ use rustc_middle::ty::{ use rustc_session::{declare_tool_lint, impl_lint_pass}; use rustc_span::symbol::sym; use rustc_span::{Span, Symbol}; -use rustc_trait_selection::infer::InferCtxtExt as _; use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt as _; use rustc_trait_selection::traits::{Obligation, ObligationCause}; use std::collections::VecDeque; @@ -452,13 +451,12 @@ impl<'tcx> LateLintPass<'tcx> for Dereferencing<'tcx> { // Trait methods taking `self` arg_ty } && impl_ty.is_ref() - && cx.tcx.infer_ctxt().build() - .type_implements_trait( - trait_id, - [impl_ty.into()].into_iter().chain(args.iter().copied()), - cx.param_env, - ) - .must_apply_modulo_regions() + && implements_trait( + cx, + impl_ty, + trait_id, + &args[..cx.tcx.generics_of(trait_id).params.len() - 1], + ) { false } else { @@ -609,12 +607,14 @@ impl<'tcx> LateLintPass<'tcx> for Dereferencing<'tcx> { adjusted_ty, }, )); - } else if stability.is_deref_stable() { + } else if stability.is_deref_stable() + && let Some(parent) = get_parent_expr(cx, expr) + { self.state = Some(( State::ExplicitDeref { mutability: None }, StateData { - span: expr.span, - hir_id: expr.hir_id, + span: parent.span, + hir_id: parent.hir_id, adjusted_ty, }, )); @@ -1399,6 +1399,13 @@ fn report<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, state: State, data return; } + if let ExprKind::Field(parent_expr, _) = expr.kind + && let ty::Adt(adt, _) = cx.typeck_results().expr_ty(parent_expr).kind() + && adt.is_union() + { + // Auto deref does not apply on union field + return; + } span_lint_hir_and_then( cx, EXPLICIT_AUTO_DEREF, diff --git a/clippy_lints/src/derivable_impls.rs b/clippy_lints/src/derivable_impls.rs index 9a85cc4ce..d2bfc4f8e 100644 --- a/clippy_lints/src/derivable_impls.rs +++ b/clippy_lints/src/derivable_impls.rs @@ -217,8 +217,7 @@ impl<'tcx> LateLintPass<'tcx> for DerivableImpls { if let &Adt(adt_def, args) = cx.tcx.type_of(item.owner_id).instantiate_identity().kind(); if let attrs = cx.tcx.hir().attrs(item.hir_id()); if !attrs.iter().any(|attr| attr.doc_str().is_some()); - if let child_attrs = cx.tcx.hir().attrs(impl_item_hir); - if !child_attrs.iter().any(|attr| attr.doc_str().is_some()); + if cx.tcx.hir().attrs(impl_item_hir).is_empty(); then { if adt_def.is_struct() { diff --git a/clippy_lints/src/disallowed_macros.rs b/clippy_lints/src/disallowed_macros.rs index 1971cab64..7469f813e 100644 --- a/clippy_lints/src/disallowed_macros.rs +++ b/clippy_lints/src/disallowed_macros.rs @@ -1,8 +1,9 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::macros::macro_backtrace; +use rustc_ast::Attribute; use rustc_data_structures::fx::FxHashSet; use rustc_hir::def_id::DefIdMap; -use rustc_hir::{Expr, ForeignItem, HirId, ImplItem, Item, Pat, Path, Stmt, TraitItem, Ty}; +use rustc_hir::{Expr, ExprKind, ForeignItem, HirId, ImplItem, Item, Pat, Path, Stmt, TraitItem, Ty}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::{declare_tool_lint, impl_lint_pass}; use rustc_span::{ExpnId, Span}; @@ -111,6 +112,10 @@ impl LateLintPass<'_> for DisallowedMacros { fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) { self.check(cx, expr.span); + // `$t + $t` can have the context of $t, check also the span of the binary operator + if let ExprKind::Binary(op, ..) = expr.kind { + self.check(cx, op.span); + } } fn check_stmt(&mut self, cx: &LateContext<'_>, stmt: &Stmt<'_>) { @@ -147,4 +152,8 @@ impl LateLintPass<'_> for DisallowedMacros { fn check_path(&mut self, cx: &LateContext<'_>, path: &Path<'_>, _: HirId) { self.check(cx, path.span); } + + fn check_attribute(&mut self, cx: &LateContext<'_>, attr: &Attribute) { + self.check(cx, attr.span); + } } diff --git a/clippy_lints/src/doc.rs b/clippy_lints/src/doc.rs index d8f2fbcea..4498e9ccd 100644 --- a/clippy_lints/src/doc.rs +++ b/clippy_lints/src/doc.rs @@ -472,7 +472,7 @@ struct DocHeaders { fn check_attrs(cx: &LateContext<'_>, valid_idents: &FxHashSet, attrs: &[Attribute]) -> Option { /// We don't want the parser to choke on intra doc links. Since we don't - /// actually care about rendering them, just pretend that all broken links are + /// actually care about rendering them, just pretend that all broken links /// point to a fake address. #[expect(clippy::unnecessary_wraps)] // we're following a type signature fn fake_broken_link_callback<'a>(_: BrokenLink<'_>) -> Option<(CowStr<'a>, CowStr<'a>)> { diff --git a/clippy_lints/src/if_then_some_else_none.rs b/clippy_lints/src/if_then_some_else_none.rs index ab6ad3f3b..e2d19e245 100644 --- a/clippy_lints/src/if_then_some_else_none.rs +++ b/clippy_lints/src/if_then_some_else_none.rs @@ -6,7 +6,7 @@ use clippy_utils::sugg::Sugg; use clippy_utils::{contains_return, higher, is_else_clause, is_res_lang_ctor, path_res, peel_blocks}; use rustc_errors::Applicability; use rustc_hir::LangItem::{OptionNone, OptionSome}; -use rustc_hir::{Expr, ExprKind, Stmt, StmtKind}; +use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_session::{declare_tool_lint, impl_lint_pass}; @@ -83,7 +83,7 @@ impl<'tcx> LateLintPass<'tcx> for IfThenSomeElseNone { && then_expr.span.ctxt() == ctxt && is_res_lang_ctor(cx, path_res(cx, then_call), OptionSome) && is_res_lang_ctor(cx, path_res(cx, peel_blocks(els)), OptionNone) - && !stmts_contains_early_return(then_block.stmts) + && !contains_return(then_block.stmts) { let mut app = Applicability::Unspecified; let cond_snip = Sugg::hir_with_context(cx, cond, expr.span.ctxt(), "[condition]", &mut app).maybe_par().to_string(); @@ -116,17 +116,3 @@ impl<'tcx> LateLintPass<'tcx> for IfThenSomeElseNone { extract_msrv_attr!(LateContext); } - -fn stmts_contains_early_return(stmts: &[Stmt<'_>]) -> bool { - stmts.iter().any(|stmt| { - let Stmt { - kind: StmtKind::Semi(e), - .. - } = stmt - else { - return false; - }; - - contains_return(e) - }) -} diff --git a/clippy_lints/src/ignored_unit_patterns.rs b/clippy_lints/src/ignored_unit_patterns.rs index c635120b8..d8ead1c9d 100644 --- a/clippy_lints/src/ignored_unit_patterns.rs +++ b/clippy_lints/src/ignored_unit_patterns.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use hir::PatKind; +use hir::{Node, PatKind}; use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::{LateContext, LateLintPass}; @@ -37,6 +37,17 @@ declare_lint_pass!(IgnoredUnitPatterns => [IGNORED_UNIT_PATTERNS]); impl<'tcx> LateLintPass<'tcx> for IgnoredUnitPatterns { fn check_pat(&mut self, cx: &LateContext<'tcx>, pat: &'tcx hir::Pat<'tcx>) { + match cx.tcx.hir().get_parent(pat.hir_id) { + Node::Param(param) if matches!(cx.tcx.hir().get_parent(param.hir_id), Node::Item(_)) => { + // Ignore function parameters + return; + }, + Node::Local(local) if local.ty.is_some() => { + // Ignore let bindings with explicit type + return; + }, + _ => {}, + } if matches!(pat.kind, PatKind::Wild) && cx.typeck_results().pat_ty(pat).is_unit() { span_lint_and_sugg( cx, diff --git a/clippy_lints/src/implied_bounds_in_impls.rs b/clippy_lints/src/implied_bounds_in_impls.rs index c6d1acad3..ec9044bba 100644 --- a/clippy_lints/src/implied_bounds_in_impls.rs +++ b/clippy_lints/src/implied_bounds_in_impls.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::snippet; use rustc_errors::{Applicability, SuggestionStyle}; -use rustc_hir::def_id::LocalDefId; +use rustc_hir::def_id::{DefId, LocalDefId}; use rustc_hir::intravisit::FnKind; use rustc_hir::{ Body, FnDecl, FnRetTy, GenericArg, GenericBound, ImplItem, ImplItemKind, ItemKind, TraitBoundModifier, TraitItem, @@ -9,7 +9,7 @@ use rustc_hir::{ }; use rustc_hir_analysis::hir_ty_to_ty; use rustc_lint::{LateContext, LateLintPass}; -use rustc_middle::ty::{self, ClauseKind, TyCtxt}; +use rustc_middle::ty::{self, ClauseKind, Generics, Ty, TyCtxt}; use rustc_session::{declare_lint_pass, declare_tool_lint}; use rustc_span::Span; @@ -45,52 +45,169 @@ declare_clippy_lint! { /// ``` #[clippy::version = "1.73.0"] pub IMPLIED_BOUNDS_IN_IMPLS, - complexity, + nursery, "specifying bounds that are implied by other bounds in `impl Trait` type" } declare_lint_pass!(ImpliedBoundsInImpls => [IMPLIED_BOUNDS_IN_IMPLS]); -/// This function tries to, for all type parameters in a supertype predicate `GenericTrait`, -/// check if the substituted type in the implied-by bound matches with what's subtituted in the -/// implied type. +#[allow(clippy::too_many_arguments)] +fn emit_lint( + cx: &LateContext<'_>, + poly_trait: &rustc_hir::PolyTraitRef<'_>, + opaque_ty: &rustc_hir::OpaqueTy<'_>, + index: usize, + // The bindings that were implied + implied_bindings: &[rustc_hir::TypeBinding<'_>], + // The original bindings that `implied_bindings` are implied from + implied_by_bindings: &[rustc_hir::TypeBinding<'_>], + implied_by_args: &[GenericArg<'_>], + implied_by_span: Span, +) { + let implied_by = snippet(cx, implied_by_span, ".."); + + span_lint_and_then( + cx, + IMPLIED_BOUNDS_IN_IMPLS, + poly_trait.span, + &format!("this bound is already specified as the supertrait of `{implied_by}`"), + |diag| { + // If we suggest removing a bound, we may also need to extend the span + // to include the `+` token that is ahead or behind, + // so we don't end up with something like `impl + B` or `impl A + ` + + let implied_span_extended = if let Some(next_bound) = opaque_ty.bounds.get(index + 1) { + poly_trait.span.to(next_bound.span().shrink_to_lo()) + } else if index > 0 + && let Some(prev_bound) = opaque_ty.bounds.get(index - 1) + { + prev_bound.span().shrink_to_hi().to(poly_trait.span.shrink_to_hi()) + } else { + poly_trait.span + }; + + let mut sugg = vec![(implied_span_extended, String::new())]; + + // We also might need to include associated type binding that were specified in the implied bound, + // but omitted in the implied-by bound: + // `fn f() -> impl Deref + DerefMut` + // If we're going to suggest removing `Deref<..>`, we'll need to put `` on `DerefMut` + let omitted_assoc_tys: Vec<_> = implied_bindings + .iter() + .filter(|binding| !implied_by_bindings.iter().any(|b| b.ident == binding.ident)) + .collect(); + + if !omitted_assoc_tys.is_empty() { + // `<>` needs to be added if there aren't yet any generic arguments or bindings + let needs_angle_brackets = implied_by_args.is_empty() && implied_by_bindings.is_empty(); + let insert_span = match (implied_by_args, implied_by_bindings) { + ([.., arg], [.., binding]) => arg.span().max(binding.span).shrink_to_hi(), + ([.., arg], []) => arg.span().shrink_to_hi(), + ([], [.., binding]) => binding.span.shrink_to_hi(), + ([], []) => implied_by_span.shrink_to_hi(), + }; + + let mut associated_tys_sugg = if needs_angle_brackets { + "<".to_owned() + } else { + // If angle brackets aren't needed (i.e., there are already generic arguments or bindings), + // we need to add a comma: + // `impl A` + // ^ if we insert `Assoc=i32` without a comma here, that'd be invalid syntax: + // `impl A` + ", ".to_owned() + }; + + for (index, binding) in omitted_assoc_tys.into_iter().enumerate() { + if index > 0 { + associated_tys_sugg += ", "; + } + associated_tys_sugg += &snippet(cx, binding.span, ".."); + } + if needs_angle_brackets { + associated_tys_sugg += ">"; + } + sugg.push((insert_span, associated_tys_sugg)); + } + + diag.multipart_suggestion_with_style( + "try removing this bound", + sugg, + Applicability::MachineApplicable, + SuggestionStyle::ShowAlways, + ); + }, + ); +} + +/// Tries to "resolve" a type. +/// The index passed to this function must start with `Self=0`, i.e. it must be a valid +/// type parameter index. +/// If the index is out of bounds, it means that the generic parameter has a default type. +fn try_resolve_type<'tcx>( + tcx: TyCtxt<'tcx>, + args: &'tcx [GenericArg<'tcx>], + generics: &'tcx Generics, + index: usize, +) -> Option> { + match args.get(index - 1) { + Some(GenericArg::Type(ty)) => Some(hir_ty_to_ty(tcx, ty)), + Some(_) => None, + None => Some(tcx.type_of(generics.params[index].def_id).skip_binder()), + } +} + +/// This function tries to, for all generic type parameters in a supertrait predicate `trait ...: +/// GenericTrait`, check if the substituted type in the implied-by bound matches with what's +/// subtituted in the implied bound. /// /// Consider this example. /// ```rust,ignore /// trait GenericTrait {} /// trait GenericSubTrait: GenericTrait {} -/// ^ trait_predicate_args: [Self#0, U#2] +/// ^^^^^^^^^^^^^^^ trait_predicate_args: [Self#0, U#2] +/// (the Self#0 is implicit: `>`) /// impl GenericTrait for () {} /// impl GenericSubTrait<(), i32, ()> for () {} -/// impl GenericSubTrait<(), [u8; 8], ()> for () {} +/// impl GenericSubTrait<(), i64, ()> for () {} /// -/// fn f() -> impl GenericTrait + GenericSubTrait<(), [u8; 8], ()> { -/// ^^^ implied_args ^^^^^^^^^^^^^^^ implied_by_args -/// (we are interested in `[u8; 8]` specifically, as that -/// is what `U` in `GenericTrait` is substituted with) -/// () +/// fn f() -> impl GenericTrait + GenericSubTrait<(), i64, ()> { +/// ^^^ implied_args ^^^^^^^^^^^ implied_by_args +/// (we are interested in `i64` specifically, as that +/// is what `U` in `GenericTrait` is substituted with) /// } /// ``` -/// Here i32 != [u8; 8], so this will return false. -fn is_same_generics( - tcx: TyCtxt<'_>, - trait_predicate_args: &[ty::GenericArg<'_>], - implied_by_args: &[GenericArg<'_>], - implied_args: &[GenericArg<'_>], +/// Here i32 != i64, so this will return false. +fn is_same_generics<'tcx>( + tcx: TyCtxt<'tcx>, + trait_predicate_args: &'tcx [ty::GenericArg<'tcx>], + implied_by_args: &'tcx [GenericArg<'tcx>], + implied_args: &'tcx [GenericArg<'tcx>], + implied_by_def_id: DefId, + implied_def_id: DefId, ) -> bool { + // Get the generics of the two traits to be able to get default generic parameter. + let implied_by_generics = tcx.generics_of(implied_by_def_id); + let implied_generics = tcx.generics_of(implied_def_id); + trait_predicate_args .iter() .enumerate() .skip(1) // skip `Self` implicit arg .all(|(arg_index, arg)| { - if let Some(ty) = arg.as_type() - && let &ty::Param(ty::ParamTy{ index, .. }) = ty.kind() - // Since `trait_predicate_args` and type params in traits start with `Self=0` - // and generic argument lists `GenericTrait` don't have `Self`, - // we need to subtract 1 from the index. - && let GenericArg::Type(ty_a) = implied_by_args[index as usize - 1] - && let GenericArg::Type(ty_b) = implied_args[arg_index - 1] - { - hir_ty_to_ty(tcx, ty_a) == hir_ty_to_ty(tcx, ty_b) + if let Some(ty) = arg.as_type() { + if let &ty::Param(ty::ParamTy { index, .. }) = ty.kind() + // `index == 0` means that it's referring to `Self`, + // in which case we don't try to substitute it + && index != 0 + && let Some(ty_a) = try_resolve_type(tcx, implied_by_args, implied_by_generics, index as usize) + && let Some(ty_b) = try_resolve_type(tcx, implied_args, implied_generics, arg_index) + { + ty_a == ty_b + } else if let Some(ty_b) = try_resolve_type(tcx, implied_args, implied_generics, arg_index) { + ty == ty_b + } else { + false + } } else { false } @@ -121,7 +238,7 @@ fn check(cx: &LateContext<'_>, decl: &FnDecl<'_>) { && let predicates = cx.tcx.super_predicates_of(trait_def_id).predicates && !predicates.is_empty() // If the trait has no supertrait, there is nothing to add. { - Some((bound.span(), path.args.map_or([].as_slice(), |a| a.args), predicates)) + Some((bound.span(), path, predicates, trait_def_id)) } else { None } @@ -134,43 +251,42 @@ fn check(cx: &LateContext<'_>, decl: &FnDecl<'_>) { if let GenericBound::Trait(poly_trait, TraitBoundModifier::None) = bound && let [.., path] = poly_trait.trait_ref.path.segments && let implied_args = path.args.map_or([].as_slice(), |a| a.args) + && let implied_bindings = path.args.map_or([].as_slice(), |a| a.bindings) && let Some(def_id) = poly_trait.trait_ref.path.res.opt_def_id() - && let Some(implied_by_span) = implied_bounds.iter().find_map(|&(span, implied_by_args, preds)| { - preds.iter().find_map(|(clause, _)| { - if let ClauseKind::Trait(tr) = clause.kind().skip_binder() - && tr.def_id() == def_id - && is_same_generics(cx.tcx, tr.trait_ref.args, implied_by_args, implied_args) - { - Some(span) - } else { - None - } + && let Some((implied_by_span, implied_by_args, implied_by_bindings)) = implied_bounds + .iter() + .find_map(|&(span, implied_by_path, preds, implied_by_def_id)| { + let implied_by_args = implied_by_path.args.map_or([].as_slice(), |a| a.args); + let implied_by_bindings = implied_by_path.args.map_or([].as_slice(), |a| a.bindings); + + preds.iter().find_map(|(clause, _)| { + if let ClauseKind::Trait(tr) = clause.kind().skip_binder() + && tr.def_id() == def_id + && is_same_generics( + cx.tcx, + tr.trait_ref.args, + implied_by_args, + implied_args, + implied_by_def_id, + def_id, + ) + { + Some((span, implied_by_args, implied_by_bindings)) + } else { + None + } + }) }) - }) { - let implied_by = snippet(cx, implied_by_span, ".."); - span_lint_and_then( - cx, IMPLIED_BOUNDS_IN_IMPLS, - poly_trait.span, - &format!("this bound is already specified as the supertrait of `{implied_by}`"), - |diag| { - // If we suggest removing a bound, we may also need extend the span - // to include the `+` token, so we don't end up with something like `impl + B` - - let implied_span_extended = if let Some(next_bound) = opaque_ty.bounds.get(index + 1) { - poly_trait.span.to(next_bound.span().shrink_to_lo()) - } else { - poly_trait.span - }; - - diag.span_suggestion_with_style( - implied_span_extended, - "try removing this bound", - "", - Applicability::MachineApplicable, - SuggestionStyle::ShowAlways - ); - } + emit_lint( + cx, + poly_trait, + opaque_ty, + index, + implied_bindings, + implied_by_bindings, + implied_by_args, + implied_by_span ); } } diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs index 20fdf26dc..f52614b62 100644 --- a/clippy_lints/src/lib.rs +++ b/clippy_lints/src/lib.rs @@ -156,7 +156,6 @@ mod implicit_saturating_add; mod implicit_saturating_sub; mod implied_bounds_in_impls; mod inconsistent_struct_constructor; -mod incorrect_impls; mod index_refutable_slice; mod indexing_slicing; mod infinite_iter; @@ -212,6 +211,7 @@ mod misc; mod misc_early; mod mismatching_type_param_order; mod missing_assert_message; +mod missing_asserts_for_indexing; mod missing_const_for_fn; mod missing_doc; mod missing_enforced_import_rename; @@ -245,6 +245,7 @@ mod neg_multiply; mod new_without_default; mod no_effect; mod no_mangle_with_rust_abi; +mod non_canonical_impls; mod non_copy_const; mod non_expressive_names; mod non_octal_unix_permissions; @@ -697,7 +698,8 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf: }); store.register_late_pass(|_| Box::::default()); store.register_late_pass(|_| Box::new(unit_types::UnitTypes)); - store.register_late_pass(move |_| Box::new(loops::Loops::new(msrv()))); + let enforce_iter_loop_reborrow = conf.enforce_iter_loop_reborrow; + store.register_late_pass(move |_| Box::new(loops::Loops::new(msrv(), enforce_iter_loop_reborrow))); store.register_late_pass(|_| Box::::default()); store.register_late_pass(|_| Box::new(lifetimes::Lifetimes)); store.register_late_pass(|_| Box::new(entry::HashMapPass)); @@ -1070,7 +1072,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf: avoid_breaking_exported_api, )) }); - store.register_late_pass(|_| Box::new(incorrect_impls::IncorrectImpls)); + store.register_late_pass(|_| Box::new(non_canonical_impls::NonCanonicalImpls)); store.register_late_pass(move |_| { Box::new(single_call_fn::SingleCallFn { avoid_breaking_exported_api, @@ -1101,6 +1103,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf: store.register_late_pass(|_| Box::new(ignored_unit_patterns::IgnoredUnitPatterns)); store.register_late_pass(|_| Box::::default()); store.register_late_pass(|_| Box::new(implied_bounds_in_impls::ImpliedBoundsInImpls)); + store.register_late_pass(|_| Box::new(missing_asserts_for_indexing::MissingAssertsForIndexing)); // add lints here, do not remove this comment, it's used in `new_lint` } diff --git a/clippy_lints/src/loops/explicit_iter_loop.rs b/clippy_lints/src/loops/explicit_iter_loop.rs index 7b8c88235..6ab256ef0 100644 --- a/clippy_lints/src/loops/explicit_iter_loop.rs +++ b/clippy_lints/src/loops/explicit_iter_loop.rs @@ -13,8 +13,14 @@ use rustc_middle::ty::adjustment::{Adjust, Adjustment, AutoBorrow, AutoBorrowMut use rustc_middle::ty::{self, EarlyBinder, Ty, TypeAndMut}; use rustc_span::sym; -pub(super) fn check(cx: &LateContext<'_>, self_arg: &Expr<'_>, call_expr: &Expr<'_>, msrv: &Msrv) { - let Some((adjust, ty)) = is_ref_iterable(cx, self_arg, call_expr) else { +pub(super) fn check( + cx: &LateContext<'_>, + self_arg: &Expr<'_>, + call_expr: &Expr<'_>, + msrv: &Msrv, + enforce_iter_loop_reborrow: bool, +) { + let Some((adjust, ty)) = is_ref_iterable(cx, self_arg, call_expr, enforce_iter_loop_reborrow) else { return; }; if let ty::Array(_, count) = *ty.peel_refs().kind() { @@ -102,6 +108,7 @@ fn is_ref_iterable<'tcx>( cx: &LateContext<'tcx>, self_arg: &Expr<'_>, call_expr: &Expr<'_>, + enforce_iter_loop_reborrow: bool, ) -> Option<(AdjustKind, Ty<'tcx>)> { let typeck = cx.typeck_results(); if let Some(trait_id) = cx.tcx.get_diagnostic_item(sym::IntoIterator) @@ -142,7 +149,8 @@ fn is_ref_iterable<'tcx>( { return Some((AdjustKind::None, self_ty)); } - } else if let ty::Ref(region, ty, Mutability::Mut) = *self_ty.kind() + } else if enforce_iter_loop_reborrow + && let ty::Ref(region, ty, Mutability::Mut) = *self_ty.kind() && let Some(mutbl) = mutbl { // Attempt to reborrow the mutable reference @@ -186,7 +194,8 @@ fn is_ref_iterable<'tcx>( }, .. ] => { - if target != self_ty + if enforce_iter_loop_reborrow + && target != self_ty && implements_trait(cx, target, trait_id, &[]) && let Some(ty) = make_normalized_projection(cx.tcx, cx.param_env, trait_id, sym!(IntoIter), [target]) diff --git a/clippy_lints/src/loops/mod.rs b/clippy_lints/src/loops/mod.rs index ffd29ab76..1fb16adad 100644 --- a/clippy_lints/src/loops/mod.rs +++ b/clippy_lints/src/loops/mod.rs @@ -609,10 +609,14 @@ declare_clippy_lint! { pub struct Loops { msrv: Msrv, + enforce_iter_loop_reborrow: bool, } impl Loops { - pub fn new(msrv: Msrv) -> Self { - Self { msrv } + pub fn new(msrv: Msrv, enforce_iter_loop_reborrow: bool) -> Self { + Self { + msrv, + enforce_iter_loop_reborrow, + } } } impl_lint_pass!(Loops => [ @@ -719,7 +723,7 @@ impl Loops { if let ExprKind::MethodCall(method, self_arg, [], _) = arg.kind { match method.ident.as_str() { "iter" | "iter_mut" => { - explicit_iter_loop::check(cx, self_arg, arg, &self.msrv); + explicit_iter_loop::check(cx, self_arg, arg, &self.msrv, self.enforce_iter_loop_reborrow); }, "into_iter" => { explicit_into_iter_loop::check(cx, self_arg, arg); diff --git a/clippy_lints/src/loops/never_loop.rs b/clippy_lints/src/loops/never_loop.rs index cc19ac55e..3d8a4cd94 100644 --- a/clippy_lints/src/loops/never_loop.rs +++ b/clippy_lints/src/loops/never_loop.rs @@ -1,13 +1,13 @@ use super::utils::make_iterator_snippet; use super::NEVER_LOOP; -use clippy_utils::consts::{constant, Constant}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::higher::ForLoop; +use clippy_utils::macros::root_macro_call_first_node; use clippy_utils::source::snippet; use rustc_errors::Applicability; use rustc_hir::{Block, Destination, Expr, ExprKind, HirId, InlineAsmOperand, Pat, Stmt, StmtKind}; use rustc_lint::LateContext; -use rustc_span::Span; +use rustc_span::{sym, Span}; use std::iter::{once, Iterator}; pub(super) fn check<'tcx>( @@ -18,7 +18,7 @@ pub(super) fn check<'tcx>( for_loop: Option<&ForLoop<'_>>, ) { match never_loop_block(cx, block, &mut Vec::new(), loop_id) { - NeverLoopResult::AlwaysBreak => { + NeverLoopResult::Diverging => { span_lint_and_then(cx, NEVER_LOOP, span, "this loop never actually loops", |diag| { if let Some(ForLoop { arg: iterator, @@ -39,67 +39,76 @@ pub(super) fn check<'tcx>( } }); }, - NeverLoopResult::MayContinueMainLoop | NeverLoopResult::Otherwise => (), - NeverLoopResult::IgnoreUntilEnd(_) => unreachable!(), + NeverLoopResult::MayContinueMainLoop | NeverLoopResult::Normal => (), } } +/// The `never_loop` analysis keeps track of three things: +/// +/// * Has any (reachable) code path hit a `continue` of the main loop? +/// * Is the current code path diverging (that is, the next expression is not reachable) +/// * For each block label `'a` inside the main loop, has any (reachable) code path encountered a +/// `break 'a`? +/// +/// The first two bits of information are in this enum, and the last part is in the +/// `local_labels` variable, which contains a list of `(block_id, reachable)` pairs ordered by +/// scope. #[derive(Copy, Clone)] enum NeverLoopResult { - // A break/return always get triggered but not necessarily for the main loop. - AlwaysBreak, - // A continue may occur for the main loop. + /// A continue may occur for the main loop. MayContinueMainLoop, - // Ignore everything until the end of the block with this id - IgnoreUntilEnd(HirId), - Otherwise, + /// We have not encountered any main loop continue, + /// but we are diverging (subsequent control flow is not reachable) + Diverging, + /// We have not encountered any main loop continue, + /// and subsequent control flow is (possibly) reachable + Normal, } #[must_use] fn absorb_break(arg: NeverLoopResult) -> NeverLoopResult { match arg { - NeverLoopResult::AlwaysBreak | NeverLoopResult::Otherwise => NeverLoopResult::Otherwise, + NeverLoopResult::Diverging | NeverLoopResult::Normal => NeverLoopResult::Normal, NeverLoopResult::MayContinueMainLoop => NeverLoopResult::MayContinueMainLoop, - NeverLoopResult::IgnoreUntilEnd(id) => NeverLoopResult::IgnoreUntilEnd(id), } } // Combine two results for parts that are called in order. #[must_use] -fn combine_seq(first: NeverLoopResult, second: NeverLoopResult) -> NeverLoopResult { +fn combine_seq(first: NeverLoopResult, second: impl FnOnce() -> NeverLoopResult) -> NeverLoopResult { match first { - NeverLoopResult::AlwaysBreak | NeverLoopResult::MayContinueMainLoop | NeverLoopResult::IgnoreUntilEnd(_) => { - first - }, - NeverLoopResult::Otherwise => second, + NeverLoopResult::Diverging | NeverLoopResult::MayContinueMainLoop => first, + NeverLoopResult::Normal => second(), } } +// Combine an iterator of results for parts that are called in order. +#[must_use] +fn combine_seq_many(iter: impl IntoIterator) -> NeverLoopResult { + for e in iter { + if let NeverLoopResult::Diverging | NeverLoopResult::MayContinueMainLoop = e { + return e; + } + } + NeverLoopResult::Normal +} + // Combine two results where only one of the part may have been executed. #[must_use] -fn combine_branches(b1: NeverLoopResult, b2: NeverLoopResult, ignore_ids: &[HirId]) -> NeverLoopResult { +fn combine_branches(b1: NeverLoopResult, b2: NeverLoopResult) -> NeverLoopResult { match (b1, b2) { - (NeverLoopResult::IgnoreUntilEnd(a), NeverLoopResult::IgnoreUntilEnd(b)) => { - if ignore_ids.iter().find(|&e| e == &a || e == &b).unwrap() == &a { - NeverLoopResult::IgnoreUntilEnd(b) - } else { - NeverLoopResult::IgnoreUntilEnd(a) - } - }, - (i @ NeverLoopResult::IgnoreUntilEnd(_), NeverLoopResult::AlwaysBreak) - | (NeverLoopResult::AlwaysBreak, i @ NeverLoopResult::IgnoreUntilEnd(_)) => i, - (NeverLoopResult::AlwaysBreak, NeverLoopResult::AlwaysBreak) => NeverLoopResult::AlwaysBreak, (NeverLoopResult::MayContinueMainLoop, _) | (_, NeverLoopResult::MayContinueMainLoop) => { NeverLoopResult::MayContinueMainLoop }, - (NeverLoopResult::Otherwise, _) | (_, NeverLoopResult::Otherwise) => NeverLoopResult::Otherwise, + (NeverLoopResult::Normal, _) | (_, NeverLoopResult::Normal) => NeverLoopResult::Normal, + (NeverLoopResult::Diverging, NeverLoopResult::Diverging) => NeverLoopResult::Diverging, } } fn never_loop_block<'tcx>( cx: &LateContext<'tcx>, block: &Block<'tcx>, - ignore_ids: &mut Vec, + local_labels: &mut Vec<(HirId, bool)>, main_loop_id: HirId, ) -> NeverLoopResult { let iter = block @@ -107,15 +116,21 @@ fn never_loop_block<'tcx>( .iter() .filter_map(stmt_to_expr) .chain(block.expr.map(|expr| (expr, None))); - - iter.map(|(e, els)| { - let e = never_loop_expr(cx, e, ignore_ids, main_loop_id); + combine_seq_many(iter.map(|(e, els)| { + let e = never_loop_expr(cx, e, local_labels, main_loop_id); // els is an else block in a let...else binding els.map_or(e, |els| { - combine_branches(e, never_loop_block(cx, els, ignore_ids, main_loop_id), ignore_ids) + combine_seq(e, || match never_loop_block(cx, els, local_labels, main_loop_id) { + // Returning MayContinueMainLoop here means that + // we will not evaluate the rest of the body + NeverLoopResult::MayContinueMainLoop => NeverLoopResult::MayContinueMainLoop, + // An else block always diverges, so the Normal case should not happen, + // but the analysis is approximate so it might return Normal anyway. + // Returning Normal here says that nothing more happens on the main path + NeverLoopResult::Diverging | NeverLoopResult::Normal => NeverLoopResult::Normal, + }) }) - }) - .fold(NeverLoopResult::Otherwise, combine_seq) + })) } fn stmt_to_expr<'tcx>(stmt: &Stmt<'tcx>) -> Option<(&'tcx Expr<'tcx>, Option<&'tcx Block<'tcx>>)> { @@ -131,76 +146,69 @@ fn stmt_to_expr<'tcx>(stmt: &Stmt<'tcx>) -> Option<(&'tcx Expr<'tcx>, Option<&'t fn never_loop_expr<'tcx>( cx: &LateContext<'tcx>, expr: &Expr<'tcx>, - ignore_ids: &mut Vec, + local_labels: &mut Vec<(HirId, bool)>, main_loop_id: HirId, ) -> NeverLoopResult { - match expr.kind { + let result = match expr.kind { ExprKind::Unary(_, e) | ExprKind::Cast(e, _) | ExprKind::Type(e, _) | ExprKind::Field(e, _) | ExprKind::AddrOf(_, _, e) | ExprKind::Repeat(e, _) - | ExprKind::DropTemps(e) => never_loop_expr(cx, e, ignore_ids, main_loop_id), - ExprKind::Let(let_expr) => never_loop_expr(cx, let_expr.init, ignore_ids, main_loop_id), - ExprKind::Array(es) | ExprKind::Tup(es) => never_loop_expr_all(cx, &mut es.iter(), ignore_ids, main_loop_id), + | ExprKind::DropTemps(e) => never_loop_expr(cx, e, local_labels, main_loop_id), + ExprKind::Let(let_expr) => never_loop_expr(cx, let_expr.init, local_labels, main_loop_id), + ExprKind::Array(es) | ExprKind::Tup(es) => never_loop_expr_all(cx, es.iter(), local_labels, main_loop_id), ExprKind::MethodCall(_, receiver, es, _) => never_loop_expr_all( cx, - &mut std::iter::once(receiver).chain(es.iter()), - ignore_ids, + std::iter::once(receiver).chain(es.iter()), + local_labels, main_loop_id, ), ExprKind::Struct(_, fields, base) => { - let fields = never_loop_expr_all(cx, &mut fields.iter().map(|f| f.expr), ignore_ids, main_loop_id); + let fields = never_loop_expr_all(cx, fields.iter().map(|f| f.expr), local_labels, main_loop_id); if let Some(base) = base { - combine_seq(fields, never_loop_expr(cx, base, ignore_ids, main_loop_id)) + combine_seq(fields, || never_loop_expr(cx, base, local_labels, main_loop_id)) } else { fields } }, - ExprKind::Call(e, es) => never_loop_expr_all(cx, &mut once(e).chain(es.iter()), ignore_ids, main_loop_id), + ExprKind::Call(e, es) => never_loop_expr_all(cx, once(e).chain(es.iter()), local_labels, main_loop_id), ExprKind::Binary(_, e1, e2) | ExprKind::Assign(e1, e2, _) | ExprKind::AssignOp(_, e1, e2) - | ExprKind::Index(e1, e2, _) => { - never_loop_expr_all(cx, &mut [e1, e2].iter().copied(), ignore_ids, main_loop_id) - }, + | ExprKind::Index(e1, e2, _) => never_loop_expr_all(cx, [e1, e2].iter().copied(), local_labels, main_loop_id), ExprKind::Loop(b, _, _, _) => { - // Break can come from the inner loop so remove them. - absorb_break(never_loop_block(cx, b, ignore_ids, main_loop_id)) + // We don't attempt to track reachability after a loop, + // just assume there may have been a break somewhere + absorb_break(never_loop_block(cx, b, local_labels, main_loop_id)) }, ExprKind::If(e, e2, e3) => { - let e1 = never_loop_expr(cx, e, ignore_ids, main_loop_id); - let e2 = never_loop_expr(cx, e2, ignore_ids, main_loop_id); - // If we know the `if` condition evaluates to `true`, don't check everything past it; it - // should just return whatever's evaluated for `e1` and `e2` since `e3` is unreachable - if let Some(Constant::Bool(true)) = constant(cx, cx.typeck_results(), e) { - return combine_seq(e1, e2); - } - let e3 = e3.as_ref().map_or(NeverLoopResult::Otherwise, |e| { - never_loop_expr(cx, e, ignore_ids, main_loop_id) - }); - combine_seq(e1, combine_branches(e2, e3, ignore_ids)) + let e1 = never_loop_expr(cx, e, local_labels, main_loop_id); + combine_seq(e1, || { + let e2 = never_loop_expr(cx, e2, local_labels, main_loop_id); + let e3 = e3.as_ref().map_or(NeverLoopResult::Normal, |e| { + never_loop_expr(cx, e, local_labels, main_loop_id) + }); + combine_branches(e2, e3) + }) }, ExprKind::Match(e, arms, _) => { - let e = never_loop_expr(cx, e, ignore_ids, main_loop_id); - if arms.is_empty() { - e - } else { - let arms = never_loop_expr_branch(cx, &mut arms.iter().map(|a| a.body), ignore_ids, main_loop_id); - combine_seq(e, arms) - } + let e = never_loop_expr(cx, e, local_labels, main_loop_id); + combine_seq(e, || { + arms.iter().fold(NeverLoopResult::Diverging, |a, b| { + combine_branches(a, never_loop_expr(cx, b.body, local_labels, main_loop_id)) + }) + }) }, ExprKind::Block(b, l) => { if l.is_some() { - ignore_ids.push(b.hir_id); - } - let ret = never_loop_block(cx, b, ignore_ids, main_loop_id); - if l.is_some() { - ignore_ids.pop(); + local_labels.push((b.hir_id, false)); } + let ret = never_loop_block(cx, b, local_labels, main_loop_id); + let jumped_to = l.is_some() && local_labels.pop().unwrap().1; match ret { - NeverLoopResult::IgnoreUntilEnd(a) if a == b.hir_id => NeverLoopResult::Otherwise, + NeverLoopResult::Diverging if jumped_to => NeverLoopResult::Normal, _ => ret, } }, @@ -211,74 +219,78 @@ fn never_loop_expr<'tcx>( if id == main_loop_id { NeverLoopResult::MayContinueMainLoop } else { - NeverLoopResult::AlwaysBreak + NeverLoopResult::Diverging } }, - // checks if break targets a block instead of a loop - ExprKind::Break(Destination { target_id: Ok(t), .. }, e) if ignore_ids.contains(&t) => e - .map_or(NeverLoopResult::IgnoreUntilEnd(t), |e| { - never_loop_expr(cx, e, ignore_ids, main_loop_id) - }), - ExprKind::Break(_, e) | ExprKind::Ret(e) => e.as_ref().map_or(NeverLoopResult::AlwaysBreak, |e| { - combine_seq( - never_loop_expr(cx, e, ignore_ids, main_loop_id), - NeverLoopResult::AlwaysBreak, - ) - }), - ExprKind::Become(e) => combine_seq( - never_loop_expr(cx, e, ignore_ids, main_loop_id), - NeverLoopResult::AlwaysBreak, - ), - ExprKind::InlineAsm(asm) => asm - .operands - .iter() - .map(|(o, _)| match o { - InlineAsmOperand::In { expr, .. } | InlineAsmOperand::InOut { expr, .. } => { - never_loop_expr(cx, expr, ignore_ids, main_loop_id) - }, - InlineAsmOperand::Out { expr, .. } => { - never_loop_expr_all(cx, &mut expr.iter().copied(), ignore_ids, main_loop_id) - }, - InlineAsmOperand::SplitInOut { in_expr, out_expr, .. } => never_loop_expr_all( - cx, - &mut once(*in_expr).chain(out_expr.iter().copied()), - ignore_ids, - main_loop_id, - ), - InlineAsmOperand::Const { .. } - | InlineAsmOperand::SymFn { .. } - | InlineAsmOperand::SymStatic { .. } => NeverLoopResult::Otherwise, + ExprKind::Break(_, e) | ExprKind::Ret(e) => { + let first = e.as_ref().map_or(NeverLoopResult::Normal, |e| { + never_loop_expr(cx, e, local_labels, main_loop_id) + }); + combine_seq(first, || { + // checks if break targets a block instead of a loop + if let ExprKind::Break(Destination { target_id: Ok(t), .. }, _) = expr.kind { + if let Some((_, reachable)) = local_labels.iter_mut().find(|(label, _)| *label == t) { + *reachable = true; + } + } + NeverLoopResult::Diverging }) - .fold(NeverLoopResult::Otherwise, combine_seq), + }, + ExprKind::Become(e) => combine_seq(never_loop_expr(cx, e, local_labels, main_loop_id), || { + NeverLoopResult::Diverging + }), + ExprKind::InlineAsm(asm) => combine_seq_many(asm.operands.iter().map(|(o, _)| match o { + InlineAsmOperand::In { expr, .. } | InlineAsmOperand::InOut { expr, .. } => { + never_loop_expr(cx, expr, local_labels, main_loop_id) + }, + InlineAsmOperand::Out { expr, .. } => { + never_loop_expr_all(cx, expr.iter().copied(), local_labels, main_loop_id) + }, + InlineAsmOperand::SplitInOut { in_expr, out_expr, .. } => never_loop_expr_all( + cx, + once(*in_expr).chain(out_expr.iter().copied()), + local_labels, + main_loop_id, + ), + InlineAsmOperand::Const { .. } | InlineAsmOperand::SymFn { .. } | InlineAsmOperand::SymStatic { .. } => { + NeverLoopResult::Normal + }, + })), ExprKind::OffsetOf(_, _) | ExprKind::Yield(_, _) | ExprKind::Closure { .. } | ExprKind::Path(_) | ExprKind::ConstBlock(_) | ExprKind::Lit(_) - | ExprKind::Err(_) => NeverLoopResult::Otherwise, + | ExprKind::Err(_) => NeverLoopResult::Normal, + }; + let result = combine_seq(result, || { + if cx.typeck_results().expr_ty(expr).is_never() { + NeverLoopResult::Diverging + } else { + NeverLoopResult::Normal + } + }); + if let NeverLoopResult::Diverging = result && + let Some(macro_call) = root_macro_call_first_node(cx, expr) && + let Some(sym::todo_macro) = cx.tcx.get_diagnostic_name(macro_call.def_id) + { + // We return MayContinueMainLoop here because we treat `todo!()` + // as potentially containing any code, including a continue of the main loop. + // This effectively silences the lint whenever a loop contains this macro anywhere. + NeverLoopResult::MayContinueMainLoop + } else { + result } } fn never_loop_expr_all<'tcx, T: Iterator>>( cx: &LateContext<'tcx>, - es: &mut T, - ignore_ids: &mut Vec, + es: T, + local_labels: &mut Vec<(HirId, bool)>, main_loop_id: HirId, ) -> NeverLoopResult { - es.map(|e| never_loop_expr(cx, e, ignore_ids, main_loop_id)) - .fold(NeverLoopResult::Otherwise, combine_seq) -} - -fn never_loop_expr_branch<'tcx, T: Iterator>>( - cx: &LateContext<'tcx>, - e: &mut T, - ignore_ids: &mut Vec, - main_loop_id: HirId, -) -> NeverLoopResult { - e.fold(NeverLoopResult::AlwaysBreak, |a, b| { - combine_branches(a, never_loop_expr(cx, b, ignore_ids, main_loop_id), ignore_ids) - }) + combine_seq_many(es.map(|e| never_loop_expr(cx, e, local_labels, main_loop_id))) } fn for_to_if_let_sugg(cx: &LateContext<'_>, iterator: &Expr<'_>, pat: &Pat<'_>) -> String { diff --git a/clippy_lints/src/manual_range_patterns.rs b/clippy_lints/src/manual_range_patterns.rs index 39d8b20d3..90557b555 100644 --- a/clippy_lints/src/manual_range_patterns.rs +++ b/clippy_lints/src/manual_range_patterns.rs @@ -1,4 +1,5 @@ -use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::source::snippet_opt; use rustc_ast::LitKind; use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; @@ -6,6 +7,7 @@ use rustc_hir::{Expr, ExprKind, PatKind, RangeEnd, UnOp}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_session::{declare_lint_pass, declare_tool_lint}; +use rustc_span::{Span, DUMMY_SP}; declare_clippy_lint! { /// ### What it does @@ -49,6 +51,29 @@ fn expr_as_i128(expr: &Expr<'_>) -> Option { } } +#[derive(Copy, Clone)] +struct Num { + val: i128, + span: Span, +} + +impl Num { + fn new(expr: &Expr<'_>) -> Option { + Some(Self { + val: expr_as_i128(expr)?, + span: expr.span, + }) + } + + fn dummy(val: i128) -> Self { + Self { val, span: DUMMY_SP } + } + + fn min(self, other: Self) -> Self { + if self.val < other.val { self } else { other } + } +} + impl LateLintPass<'_> for ManualRangePatterns { fn check_pat(&mut self, cx: &LateContext<'_>, pat: &'_ rustc_hir::Pat<'_>) { if in_external_macro(cx.sess(), pat.span) { @@ -56,71 +81,83 @@ impl LateLintPass<'_> for ManualRangePatterns { } // a pattern like 1 | 2 seems fine, lint if there are at least 3 alternatives + // or at least one range if let PatKind::Or(pats) = pat.kind - && pats.len() >= 3 + && (pats.len() >= 3 || pats.iter().any(|p| matches!(p.kind, PatKind::Range(..)))) { - let mut min = i128::MAX; - let mut max = i128::MIN; + let mut min = Num::dummy(i128::MAX); + let mut max = Num::dummy(i128::MIN); + let mut range_kind = RangeEnd::Included; let mut numbers_found = FxHashSet::default(); let mut ranges_found = Vec::new(); for pat in pats { if let PatKind::Lit(lit) = pat.kind - && let Some(num) = expr_as_i128(lit) + && let Some(num) = Num::new(lit) { - numbers_found.insert(num); + numbers_found.insert(num.val); min = min.min(num); - max = max.max(num); + if num.val >= max.val { + max = num; + range_kind = RangeEnd::Included; + } } else if let PatKind::Range(Some(left), Some(right), end) = pat.kind - && let Some(left) = expr_as_i128(left) - && let Some(right) = expr_as_i128(right) - && right >= left + && let Some(left) = Num::new(left) + && let Some(mut right) = Num::new(right) { + if let RangeEnd::Excluded = end { + right.val -= 1; + } + min = min.min(left); - max = max.max(right); - ranges_found.push(left..=match end { - RangeEnd::Included => right, - RangeEnd::Excluded => right - 1, - }); + if right.val > max.val { + max = right; + range_kind = end; + } + ranges_found.push(left.val..=right.val); } else { return; } } - let contains_whole_range = 'contains: { - let mut num = min; - while num <= max { - if numbers_found.contains(&num) { - num += 1; - } - // Given a list of (potentially overlapping) ranges like: - // 1..=5, 3..=7, 6..=10 - // We want to find the range with the highest end that still contains the current number - else if let Some(range) = ranges_found - .iter() - .filter(|range| range.contains(&num)) - .max_by_key(|range| range.end()) - { - num = range.end() + 1; - } else { - break 'contains false; - } + let mut num = min.val; + while num <= max.val { + if numbers_found.contains(&num) { + num += 1; + } + // Given a list of (potentially overlapping) ranges like: + // 1..=5, 3..=7, 6..=10 + // We want to find the range with the highest end that still contains the current number + else if let Some(range) = ranges_found + .iter() + .filter(|range| range.contains(&num)) + .max_by_key(|range| range.end()) + { + num = range.end() + 1; + } else { + return; } - break 'contains true; - }; - - if contains_whole_range { - span_lint_and_sugg( - cx, - MANUAL_RANGE_PATTERNS, - pat.span, - "this OR pattern can be rewritten using a range", - "try", - format!("{min}..={max}"), - Applicability::MachineApplicable, - ); } + + span_lint_and_then( + cx, + MANUAL_RANGE_PATTERNS, + pat.span, + "this OR pattern can be rewritten using a range", + |diag| { + if let Some(min) = snippet_opt(cx, min.span) + && let Some(max) = snippet_opt(cx, max.span) + { + diag.span_suggestion( + pat.span, + "try", + format!("{min}{range_kind}{max}"), + Applicability::MachineApplicable, + ); + } + }, + ); } } } diff --git a/clippy_lints/src/methods/iter_out_of_bounds.rs b/clippy_lints/src/methods/iter_out_of_bounds.rs new file mode 100644 index 000000000..79c6d6325 --- /dev/null +++ b/clippy_lints/src/methods/iter_out_of_bounds.rs @@ -0,0 +1,106 @@ +use clippy_utils::diagnostics::span_lint_and_note; +use clippy_utils::higher::VecArgs; +use clippy_utils::{expr_or_init, is_trait_method, match_def_path, paths}; +use rustc_ast::LitKind; +use rustc_hir::{Expr, ExprKind}; +use rustc_lint::LateContext; +use rustc_middle::ty::{self}; +use rustc_span::sym; + +use super::ITER_OUT_OF_BOUNDS; + +fn expr_as_u128(cx: &LateContext<'_>, e: &Expr<'_>) -> Option { + if let ExprKind::Lit(lit) = expr_or_init(cx, e).kind + && let LitKind::Int(n, _) = lit.node + { + Some(n) + } else { + None + } +} + +/// Attempts to extract the length out of an iterator expression. +fn get_iterator_length<'tcx>(cx: &LateContext<'tcx>, iter: &'tcx Expr<'tcx>) -> Option { + let ty::Adt(adt, substs) = cx.typeck_results().expr_ty(iter).kind() else { + return None; + }; + let did = adt.did(); + + if match_def_path(cx, did, &paths::ARRAY_INTO_ITER) { + // For array::IntoIter, the length is the second generic + // parameter. + substs + .const_at(1) + .try_eval_target_usize(cx.tcx, cx.param_env) + .map(u128::from) + } else if match_def_path(cx, did, &paths::SLICE_ITER) + && let ExprKind::MethodCall(_, recv, ..) = iter.kind + { + if let ty::Array(_, len) = cx.typeck_results().expr_ty(recv).peel_refs().kind() { + // For slice::Iter<'_, T>, the receiver might be an array literal: [1,2,3].iter().skip(..) + len.try_eval_target_usize(cx.tcx, cx.param_env).map(u128::from) + } else if let Some(args) = VecArgs::hir(cx, expr_or_init(cx, recv)) { + match args { + VecArgs::Vec(vec) => vec.len().try_into().ok(), + VecArgs::Repeat(_, len) => expr_as_u128(cx, len), + } + } else { + None + } + } else if match_def_path(cx, did, &paths::ITER_EMPTY) { + Some(0) + } else if match_def_path(cx, did, &paths::ITER_ONCE) { + Some(1) + } else { + None + } +} + +fn check<'tcx>( + cx: &LateContext<'tcx>, + expr: &'tcx Expr<'tcx>, + recv: &'tcx Expr<'tcx>, + arg: &'tcx Expr<'tcx>, + message: &'static str, + note: &'static str, +) { + if is_trait_method(cx, expr, sym::Iterator) + && let Some(len) = get_iterator_length(cx, recv) + && let Some(skipped) = expr_as_u128(cx, arg) + && skipped > len + { + span_lint_and_note(cx, ITER_OUT_OF_BOUNDS, expr.span, message, None, note); + } +} + +pub(super) fn check_skip<'tcx>( + cx: &LateContext<'tcx>, + expr: &'tcx Expr<'tcx>, + recv: &'tcx Expr<'tcx>, + arg: &'tcx Expr<'tcx>, +) { + check( + cx, + expr, + recv, + arg, + "this `.skip()` call skips more items than the iterator will produce", + "this operation is useless and will create an empty iterator", + ); +} + +pub(super) fn check_take<'tcx>( + cx: &LateContext<'tcx>, + expr: &'tcx Expr<'tcx>, + recv: &'tcx Expr<'tcx>, + arg: &'tcx Expr<'tcx>, +) { + check( + cx, + expr, + recv, + arg, + "this `.take()` call takes more items than the iterator will produce", + "this operation is useless and the returned iterator will simply yield the same items", + ); +} diff --git a/clippy_lints/src/methods/iter_overeager_cloned.rs b/clippy_lints/src/methods/iter_overeager_cloned.rs index ee405a3e3..a49dd98db 100644 --- a/clippy_lints/src/methods/iter_overeager_cloned.rs +++ b/clippy_lints/src/methods/iter_overeager_cloned.rs @@ -21,7 +21,7 @@ pub(super) enum Op<'a> { RmCloned, // rm `.cloned()` - // e.g. `map` `for_each` + // e.g. `map` `for_each` `all` `any` NeedlessMove(&'a str, &'a Expr<'a>), // later `.cloned()` diff --git a/clippy_lints/src/methods/mod.rs b/clippy_lints/src/methods/mod.rs index 5075137ca..81223fa8d 100644 --- a/clippy_lints/src/methods/mod.rs +++ b/clippy_lints/src/methods/mod.rs @@ -43,6 +43,7 @@ mod iter_next_slice; mod iter_nth; mod iter_nth_zero; mod iter_on_single_or_empty_collections; +mod iter_out_of_bounds; mod iter_overeager_cloned; mod iter_skip_next; mod iter_skip_zero; @@ -3054,12 +3055,12 @@ declare_clippy_lint! { /// /// ### Example /// ```rust - /// vec!(1, 2, 3, 4, 5).resize(0, 5) + /// vec![1, 2, 3, 4, 5].resize(0, 5) /// ``` /// /// Use instead: /// ```rust - /// vec!(1, 2, 3, 4, 5).clear() + /// vec![1, 2, 3, 4, 5].clear() /// ``` #[clippy::version = "1.46.0"] pub VEC_RESIZE_TO_ZERO, @@ -3538,6 +3539,30 @@ declare_clippy_lint! { "acquiring a write lock when a read lock would work" } +declare_clippy_lint! { + /// ### What it does + /// Looks for iterator combinator calls such as `.take(x)` or `.skip(x)` + /// where `x` is greater than the amount of items that an iterator will produce. + /// + /// ### Why is this bad? + /// Taking or skipping more items than there are in an iterator either creates an iterator + /// with all items from the original iterator or an iterator with no items at all. + /// This is most likely not what the user intended to do. + /// + /// ### Example + /// ```rust + /// for _ in [1, 2, 3].iter().take(4) {} + /// ``` + /// Use instead: + /// ```rust + /// for _ in [1, 2, 3].iter() {} + /// ``` + #[clippy::version = "1.74.0"] + pub ITER_OUT_OF_BOUNDS, + suspicious, + "calls to `.take()` or `.skip()` that are out of bounds" +} + pub struct Methods { avoid_breaking_exported_api: bool, msrv: Msrv, @@ -3676,7 +3701,8 @@ impl_lint_pass!(Methods => [ STRING_LIT_CHARS_ANY, ITER_SKIP_ZERO, FILTER_MAP_BOOL_THEN, - READONLY_WRITE_LOCK + READONLY_WRITE_LOCK, + ITER_OUT_OF_BOUNDS, ]); /// Extracts a method call name, args, and `Span` of the method name. @@ -3873,6 +3899,12 @@ impl Methods { ("add" | "offset" | "sub" | "wrapping_offset" | "wrapping_add" | "wrapping_sub", [_arg]) => { zst_offset::check(cx, expr, recv); }, + ("all", [arg]) => { + if let Some(("cloned", recv2, [], _, _)) = method_call(recv) { + iter_overeager_cloned::check(cx, expr, recv, recv2, + iter_overeager_cloned::Op::NeedlessMove(name, arg), false); + } + } ("and_then", [arg]) => { let biom_option_linted = bind_instead_of_map::OptionAndThenSome::check(cx, expr, recv, arg); let biom_result_linted = bind_instead_of_map::ResultAndThenOk::check(cx, expr, recv, arg); @@ -3880,12 +3912,16 @@ impl Methods { unnecessary_lazy_eval::check(cx, expr, recv, arg, "and"); } }, - ("any", [arg]) if let ExprKind::Closure(arg) = arg.kind - && let body = cx.tcx.hir().body(arg.body) - && let [param] = body.params - && let Some(("chars", recv, _, _, _)) = method_call(recv) => - { - string_lit_chars_any::check(cx, expr, recv, param, peel_blocks(body.value), &self.msrv); + ("any", [arg]) => { + match method_call(recv) { + Some(("cloned", recv2, [], _, _)) => iter_overeager_cloned::check(cx, expr, recv, recv2, iter_overeager_cloned::Op::NeedlessMove(name, arg), false), + Some(("chars", recv, _, _, _)) if let ExprKind::Closure(arg) = arg.kind + && let body = cx.tcx.hir().body(arg.body) + && let [param] = body.params => { + string_lit_chars_any::check(cx, expr, recv, param, peel_blocks(body.value), &self.msrv); + } + _ => {} + } } ("arg", [arg]) => { suspicious_command_arg_space::check(cx, recv, arg, span); @@ -4136,6 +4172,7 @@ impl Methods { }, ("skip", [arg]) => { iter_skip_zero::check(cx, expr, arg); + iter_out_of_bounds::check_skip(cx, expr, recv, arg); if let Some(("cloned", recv2, [], _span2, _)) = method_call(recv) { iter_overeager_cloned::check(cx, expr, recv, recv2, @@ -4163,7 +4200,8 @@ impl Methods { } }, ("step_by", [arg]) => iterator_step_by_zero::check(cx, expr, arg), - ("take", [_arg]) => { + ("take", [arg]) => { + iter_out_of_bounds::check_take(cx, expr, recv, arg); if let Some(("cloned", recv2, [], _span2, _)) = method_call(recv) { iter_overeager_cloned::check(cx, expr, recv, recv2, iter_overeager_cloned::Op::LaterCloned, false); diff --git a/clippy_lints/src/missing_asserts_for_indexing.rs b/clippy_lints/src/missing_asserts_for_indexing.rs new file mode 100644 index 000000000..08fec2b8e --- /dev/null +++ b/clippy_lints/src/missing_asserts_for_indexing.rs @@ -0,0 +1,391 @@ +use std::mem; +use std::ops::ControlFlow; + +use clippy_utils::comparisons::{normalize_comparison, Rel}; +use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::source::snippet; +use clippy_utils::visitors::for_each_expr; +use clippy_utils::{eq_expr_value, hash_expr, higher}; +use rustc_ast::{LitKind, RangeLimits}; +use rustc_data_structures::unhash::UnhashMap; +use rustc_errors::{Applicability, Diagnostic}; +use rustc_hir::{BinOp, Block, Expr, ExprKind, UnOp}; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_session::{declare_lint_pass, declare_tool_lint}; +use rustc_span::source_map::Spanned; +use rustc_span::{sym, Span}; + +declare_clippy_lint! { + /// ### What it does + /// Checks for repeated slice indexing without asserting beforehand that the length + /// is greater than the largest index used to index into the slice. + /// + /// ### Why is this bad? + /// In the general case where the compiler does not have a lot of information + /// about the length of a slice, indexing it repeatedly will generate a bounds check + /// for every single index. + /// + /// Asserting that the length of the slice is at least as large as the largest value + /// to index beforehand gives the compiler enough information to elide the bounds checks, + /// effectively reducing the number of bounds checks from however many times + /// the slice was indexed to just one (the assert). + /// + /// ### Drawbacks + /// False positives. It is, in general, very difficult to predict how well + /// the optimizer will be able to elide bounds checks and it very much depends on + /// the surrounding code. For example, indexing into the slice yielded by the + /// [`slice::chunks_exact`](https://doc.rust-lang.org/stable/std/primitive.slice.html#method.chunks_exact) + /// iterator will likely have all of the bounds checks elided even without an assert + /// if the `chunk_size` is a constant. + /// + /// Asserts are not tracked across function calls. Asserting the length of a slice + /// in a different function likely gives the optimizer enough information + /// about the length of a slice, but this lint will not detect that. + /// + /// ### Example + /// ```rust + /// fn sum(v: &[u8]) -> u8 { + /// // 4 bounds checks + /// v[0] + v[1] + v[2] + v[3] + /// } + /// ``` + /// Use instead: + /// ```rust + /// fn sum(v: &[u8]) -> u8 { + /// assert!(v.len() > 4); + /// // no bounds checks + /// v[0] + v[1] + v[2] + v[3] + /// } + /// ``` + #[clippy::version = "1.70.0"] + pub MISSING_ASSERTS_FOR_INDEXING, + restriction, + "indexing into a slice multiple times without an `assert`" +} +declare_lint_pass!(MissingAssertsForIndexing => [MISSING_ASSERTS_FOR_INDEXING]); + +fn report_lint(cx: &LateContext<'_>, full_span: Span, msg: &str, indexes: &[Span], f: F) +where + F: FnOnce(&mut Diagnostic), +{ + span_lint_and_then(cx, MISSING_ASSERTS_FOR_INDEXING, full_span, msg, |diag| { + f(diag); + for span in indexes { + diag.span_note(*span, "slice indexed here"); + } + diag.note("asserting the length before indexing will elide bounds checks"); + }); +} + +#[derive(Copy, Clone, Debug)] +enum LengthComparison { + /// `v.len() < 5` + LengthLessThanInt, + /// `5 < v.len()` + IntLessThanLength, + /// `v.len() <= 5` + LengthLessThanOrEqualInt, + /// `5 <= v.len()` + IntLessThanOrEqualLength, +} + +/// Extracts parts out of a length comparison expression. +/// +/// E.g. for `v.len() > 5` this returns `Some((LengthComparison::IntLessThanLength, 5, `v.len()`))` +fn len_comparison<'hir>( + bin_op: BinOp, + left: &'hir Expr<'hir>, + right: &'hir Expr<'hir>, +) -> Option<(LengthComparison, usize, &'hir Expr<'hir>)> { + macro_rules! int_lit_pat { + ($id:ident) => { + ExprKind::Lit(Spanned { + node: LitKind::Int($id, _), + .. + }) + }; + } + + // normalize comparison, `v.len() > 4` becomes `4 < v.len()` + // this simplifies the logic a bit + let (op, left, right) = normalize_comparison(bin_op.node, left, right)?; + match (op, &left.kind, &right.kind) { + (Rel::Lt, int_lit_pat!(left), _) => Some((LengthComparison::IntLessThanLength, *left as usize, right)), + (Rel::Lt, _, int_lit_pat!(right)) => Some((LengthComparison::LengthLessThanInt, *right as usize, left)), + (Rel::Le, int_lit_pat!(left), _) => Some((LengthComparison::IntLessThanOrEqualLength, *left as usize, right)), + (Rel::Le, _, int_lit_pat!(right)) => Some((LengthComparison::LengthLessThanOrEqualInt, *right as usize, left)), + _ => None, + } +} + +/// Attempts to extract parts out of an `assert!`-like expression +/// in the form `assert!(some_slice.len() > 5)`. +/// +/// `assert!` has expanded to an if expression at the HIR, so this +/// actually works not just with `assert!` specifically, but anything +/// that has a never type expression in the `then` block (e.g. `panic!`). +fn assert_len_expr<'hir>( + cx: &LateContext<'_>, + expr: &'hir Expr<'hir>, +) -> Option<(LengthComparison, usize, &'hir Expr<'hir>)> { + if let Some(higher::If { cond, then, .. }) = higher::If::hir(expr) + && let ExprKind::Unary(UnOp::Not, condition) = &cond.kind + && let ExprKind::Binary(bin_op, left, right) = &condition.kind + + && let Some((cmp, asserted_len, slice_len)) = len_comparison(*bin_op, left, right) + && let ExprKind::MethodCall(method, recv, ..) = &slice_len.kind + && cx.typeck_results().expr_ty_adjusted(recv).peel_refs().is_slice() + && method.ident.name == sym::len + + // check if `then` block has a never type expression + && let ExprKind::Block(Block { expr: Some(then_expr), .. }, _) = then.kind + && cx.typeck_results().expr_ty(then_expr).is_never() + { + Some((cmp, asserted_len, recv)) + } else { + None + } +} + +#[derive(Debug)] +enum IndexEntry<'hir> { + /// `assert!` without any indexing (so far) + StrayAssert { + asserted_len: usize, + comparison: LengthComparison, + assert_span: Span, + slice: &'hir Expr<'hir>, + }, + /// `assert!` with indexing + /// + /// We also store the highest index to be able to check + /// if the `assert!` asserts the right length. + AssertWithIndex { + highest_index: usize, + asserted_len: usize, + assert_span: Span, + slice: &'hir Expr<'hir>, + indexes: Vec, + comparison: LengthComparison, + }, + /// Indexing without an `assert!` + IndexWithoutAssert { + highest_index: usize, + indexes: Vec, + slice: &'hir Expr<'hir>, + }, +} + +impl<'hir> IndexEntry<'hir> { + pub fn slice(&self) -> &'hir Expr<'hir> { + match self { + IndexEntry::StrayAssert { slice, .. } + | IndexEntry::AssertWithIndex { slice, .. } + | IndexEntry::IndexWithoutAssert { slice, .. } => slice, + } + } + + pub fn index_spans(&self) -> Option<&[Span]> { + match self { + IndexEntry::StrayAssert { .. } => None, + IndexEntry::AssertWithIndex { indexes, .. } | IndexEntry::IndexWithoutAssert { indexes, .. } => { + Some(indexes) + }, + } + } +} + +/// Extracts the upper index of a slice indexing expression. +/// +/// E.g. for `5` this returns `Some(5)`, for `..5` this returns `Some(4)`, +/// for `..=5` this returns `Some(5)` +fn upper_index_expr(expr: &Expr<'_>) -> Option { + if let ExprKind::Lit(lit) = &expr.kind && let LitKind::Int(index, _) = lit.node { + Some(index as usize) + } else if let Some(higher::Range { end: Some(end), limits, .. }) = higher::Range::hir(expr) + && let ExprKind::Lit(lit) = &end.kind + && let LitKind::Int(index @ 1.., _) = lit.node + { + match limits { + RangeLimits::HalfOpen => Some(index as usize - 1), + RangeLimits::Closed => Some(index as usize), + } + } else { + None + } +} + +/// Checks if the expression is an index into a slice and adds it to `indexes` +fn check_index<'hir>(cx: &LateContext<'_>, expr: &'hir Expr<'hir>, map: &mut UnhashMap>>) { + if let ExprKind::Index(slice, index_lit, _) = expr.kind + && cx.typeck_results().expr_ty_adjusted(slice).peel_refs().is_slice() + && let Some(index) = upper_index_expr(index_lit) + { + let hash = hash_expr(cx, slice); + + let indexes = map.entry(hash).or_default(); + let entry = indexes.iter_mut().find(|entry| eq_expr_value(cx, entry.slice(), slice)); + + if let Some(entry) = entry { + match entry { + IndexEntry::StrayAssert { asserted_len, comparison, assert_span, slice } => { + *entry = IndexEntry::AssertWithIndex { + highest_index: index, + asserted_len: *asserted_len, + assert_span: *assert_span, + slice, + indexes: vec![expr.span], + comparison: *comparison, + }; + }, + IndexEntry::IndexWithoutAssert { highest_index, indexes, .. } + | IndexEntry::AssertWithIndex { highest_index, indexes, .. } => { + indexes.push(expr.span); + *highest_index = (*highest_index).max(index); + }, + } + } else { + indexes.push(IndexEntry::IndexWithoutAssert { + highest_index: index, + indexes: vec![expr.span], + slice, + }); + } + } +} + +/// Checks if the expression is an `assert!` expression and adds it to `asserts` +fn check_assert<'hir>(cx: &LateContext<'_>, expr: &'hir Expr<'hir>, map: &mut UnhashMap>>) { + if let Some((comparison, asserted_len, slice)) = assert_len_expr(cx, expr) { + let hash = hash_expr(cx, slice); + let indexes = map.entry(hash).or_default(); + + let entry = indexes.iter_mut().find(|entry| eq_expr_value(cx, entry.slice(), slice)); + + if let Some(entry) = entry { + if let IndexEntry::IndexWithoutAssert { + highest_index, + indexes, + slice, + } = entry + { + *entry = IndexEntry::AssertWithIndex { + highest_index: *highest_index, + indexes: mem::take(indexes), + slice, + assert_span: expr.span, + comparison, + asserted_len, + }; + } + } else { + indexes.push(IndexEntry::StrayAssert { + asserted_len, + comparison, + assert_span: expr.span, + slice, + }); + } + } +} + +/// Inspects indexes and reports lints. +/// +/// Called at the end of this lint after all indexing and `assert!` expressions have been collected. +fn report_indexes(cx: &LateContext<'_>, map: &UnhashMap>>) { + for bucket in map.values() { + for entry in bucket { + let Some(full_span) = entry + .index_spans() + .and_then(|spans| spans.first().zip(spans.last())) + .map(|(low, &high)| low.to(high)) + else { + continue; + }; + + match entry { + IndexEntry::AssertWithIndex { + highest_index, + asserted_len, + indexes, + comparison, + assert_span, + slice, + } if indexes.len() > 1 => { + // if we have found an `assert!`, let's also check that it's actually right + // and if it convers the highest index and if not, suggest the correct length + let sugg = match comparison { + // `v.len() < 5` and `v.len() <= 5` does nothing in terms of bounds checks. + // The user probably meant `v.len() > 5` + LengthComparison::LengthLessThanInt | LengthComparison::LengthLessThanOrEqualInt => Some( + format!("assert!({}.len() > {highest_index})", snippet(cx, slice.span, "..")), + ), + // `5 < v.len()` == `v.len() > 5` + LengthComparison::IntLessThanLength if asserted_len < highest_index => Some(format!( + "assert!({}.len() > {highest_index})", + snippet(cx, slice.span, "..") + )), + // `5 <= v.len() == `v.len() >= 5` + LengthComparison::IntLessThanOrEqualLength if asserted_len <= highest_index => Some(format!( + "assert!({}.len() > {highest_index})", + snippet(cx, slice.span, "..") + )), + _ => None, + }; + + if let Some(sugg) = sugg { + report_lint( + cx, + full_span, + "indexing into a slice multiple times with an `assert` that does not cover the highest index", + indexes, + |diag| { + diag.span_suggestion( + *assert_span, + "provide the highest index that is indexed with", + sugg, + Applicability::MachineApplicable, + ); + }, + ); + } + }, + IndexEntry::IndexWithoutAssert { + indexes, + highest_index, + slice, + } if indexes.len() > 1 => { + // if there was no `assert!` but more than one index, suggest + // adding an `assert!` that covers the highest index + report_lint( + cx, + full_span, + "indexing into a slice multiple times without an `assert`", + indexes, + |diag| { + diag.help(format!( + "consider asserting the length before indexing: `assert!({}.len() > {highest_index});`", + snippet(cx, slice.span, "..") + )); + }, + ); + }, + _ => {}, + } + } + } +} + +impl LateLintPass<'_> for MissingAssertsForIndexing { + fn check_block(&mut self, cx: &LateContext<'_>, block: &Block<'_>) { + let mut map = UnhashMap::default(); + + for_each_expr(block, |expr| { + check_index(cx, expr, &mut map); + check_assert(cx, expr, &mut map); + ControlFlow::::Continue(()) + }); + + report_indexes(cx, &map); + } +} diff --git a/clippy_lints/src/incorrect_impls.rs b/clippy_lints/src/non_canonical_impls.rs similarity index 88% rename from clippy_lints/src/incorrect_impls.rs rename to clippy_lints/src/non_canonical_impls.rs index 3c59b839a..4b24f059a 100644 --- a/clippy_lints/src/incorrect_impls.rs +++ b/clippy_lints/src/non_canonical_impls.rs @@ -13,11 +13,12 @@ use rustc_span::symbol::kw; declare_clippy_lint! { /// ### What it does - /// Checks for manual implementations of `Clone` when `Copy` is already implemented. + /// Checks for non-canonical implementations of `Clone` when `Copy` is already implemented. /// /// ### Why is this bad? - /// If both `Clone` and `Copy` are implemented, they must agree. This is done by dereferencing - /// `self` in `Clone`'s implementation. Anything else is incorrect. + /// If both `Clone` and `Copy` are implemented, they must agree. This can done by dereferencing + /// `self` in `Clone`'s implementation, which will avoid any possibility of the implementations + /// becoming out of sync. /// /// ### Example /// ```rust,ignore @@ -46,14 +47,13 @@ declare_clippy_lint! { /// impl Copy for A {} /// ``` #[clippy::version = "1.72.0"] - pub INCORRECT_CLONE_IMPL_ON_COPY_TYPE, - correctness, - "manual implementation of `Clone` on a `Copy` type" + pub NON_CANONICAL_CLONE_IMPL, + suspicious, + "non-canonical implementation of `Clone` on a `Copy` type" } declare_clippy_lint! { /// ### What it does - /// Checks for manual implementations of both `PartialOrd` and `Ord` when only `Ord` is - /// necessary. + /// Checks for non-canonical implementations of `PartialOrd` when `Ord` is already implemented. /// /// ### Why is this bad? /// If both `PartialOrd` and `Ord` are implemented, they must agree. This is commonly done by @@ -61,11 +61,8 @@ declare_clippy_lint! { /// introduce an error upon refactoring. /// /// ### Known issues - /// Code that calls the `.into()` method instead will be flagged as incorrect, despite `.into()` - /// wrapping it in `Some`. - /// - /// ### Limitations - /// Will not lint if `Self` and `Rhs` do not have the same type. + /// Code that calls the `.into()` method instead will be flagged, despite `.into()` wrapping it + /// in `Some`. /// /// ### Example /// ```rust @@ -107,13 +104,13 @@ declare_clippy_lint! { /// } /// ``` #[clippy::version = "1.72.0"] - pub INCORRECT_PARTIAL_ORD_IMPL_ON_ORD_TYPE, - correctness, - "manual implementation of `PartialOrd` when `Ord` is already implemented" + pub NON_CANONICAL_PARTIAL_ORD_IMPL, + suspicious, + "non-canonical implementation of `PartialOrd` on an `Ord` type" } -declare_lint_pass!(IncorrectImpls => [INCORRECT_CLONE_IMPL_ON_COPY_TYPE, INCORRECT_PARTIAL_ORD_IMPL_ON_ORD_TYPE]); +declare_lint_pass!(NonCanonicalImpls => [NON_CANONICAL_CLONE_IMPL, NON_CANONICAL_PARTIAL_ORD_IMPL]); -impl LateLintPass<'_> for IncorrectImpls { +impl LateLintPass<'_> for NonCanonicalImpls { #[expect(clippy::too_many_lines)] fn check_impl_item(&mut self, cx: &LateContext<'_>, impl_item: &ImplItem<'_>) { let Some(Node::Item(item)) = get_parent_node(cx.tcx, impl_item.hir_id()) else { @@ -154,9 +151,9 @@ impl LateLintPass<'_> for IncorrectImpls { {} else { span_lint_and_sugg( cx, - INCORRECT_CLONE_IMPL_ON_COPY_TYPE, + NON_CANONICAL_CLONE_IMPL, block.span, - "incorrect implementation of `clone` on a `Copy` type", + "non-canonical implementation of `clone` on a `Copy` type", "change this to", "{ *self }".to_owned(), Applicability::MaybeIncorrect, @@ -169,9 +166,9 @@ impl LateLintPass<'_> for IncorrectImpls { if impl_item.ident.name == sym::clone_from { span_lint_and_sugg( cx, - INCORRECT_CLONE_IMPL_ON_COPY_TYPE, + NON_CANONICAL_CLONE_IMPL, impl_item.span, - "incorrect implementation of `clone_from` on a `Copy` type", + "unnecessary implementation of `clone_from` on a `Copy` type", "remove it", String::new(), Applicability::MaybeIncorrect, @@ -222,9 +219,9 @@ impl LateLintPass<'_> for IncorrectImpls { span_lint_and_then( cx, - INCORRECT_PARTIAL_ORD_IMPL_ON_ORD_TYPE, + NON_CANONICAL_PARTIAL_ORD_IMPL, item.span, - "incorrect implementation of `partial_cmp` on an `Ord` type", + "non-canonical implementation of `partial_cmp` on an `Ord` type", |diag| { let [_, other] = body.params else { return; diff --git a/clippy_lints/src/operators/arithmetic_side_effects.rs b/clippy_lints/src/operators/arithmetic_side_effects.rs index a687c7d29..8072aded8 100644 --- a/clippy_lints/src/operators/arithmetic_side_effects.rs +++ b/clippy_lints/src/operators/arithmetic_side_effects.rs @@ -14,7 +14,12 @@ use {rustc_ast as ast, rustc_hir as hir}; const HARD_CODED_ALLOWED_BINARY: &[[&str; 2]] = &[["f32", "f32"], ["f64", "f64"], ["std::string::String", "str"]]; const HARD_CODED_ALLOWED_UNARY: &[&str] = &["f32", "f64", "std::num::Saturating", "std::num::Wrapping"]; -const INTEGER_METHODS: &[Symbol] = &[sym::saturating_div, sym::wrapping_div, sym::wrapping_rem, sym::wrapping_rem_euclid]; +const INTEGER_METHODS: &[Symbol] = &[ + sym::saturating_div, + sym::wrapping_div, + sym::wrapping_rem, + sym::wrapping_rem_euclid, +]; #[derive(Debug)] pub struct ArithmeticSideEffects { @@ -93,7 +98,14 @@ impl ArithmeticSideEffects { let is_non_zero_u = |symbol: Option| { matches!( symbol, - Some(sym::NonZeroU128 | sym::NonZeroU16 | sym::NonZeroU32 | sym::NonZeroU64 | sym::NonZeroU8 | sym::NonZeroUsize) + Some( + sym::NonZeroU128 + | sym::NonZeroU16 + | sym::NonZeroU32 + | sym::NonZeroU64 + | sym::NonZeroU8 + | sym::NonZeroUsize + ) ) }; let is_sat_or_wrap = |ty: Ty<'_>| { diff --git a/clippy_lints/src/operators/float_cmp.rs b/clippy_lints/src/operators/float_cmp.rs index f3e0c58a7..bce6bdcaf 100644 --- a/clippy_lints/src/operators/float_cmp.rs +++ b/clippy_lints/src/operators/float_cmp.rs @@ -17,7 +17,7 @@ pub(crate) fn check<'tcx>( left: &'tcx Expr<'_>, right: &'tcx Expr<'_>, ) { - if (op == BinOpKind::Eq || op == BinOpKind::Ne) && (is_float(cx, left) || is_float(cx, right)) { + if (op == BinOpKind::Eq || op == BinOpKind::Ne) && is_float(cx, left) { let left_is_local = match constant_with_source(cx, cx.typeck_results(), left) { Some((c, s)) if !is_allowed(&c) => s.is_local(), Some(_) => return, diff --git a/clippy_lints/src/raw_strings.rs b/clippy_lints/src/raw_strings.rs index ccabb577c..e8018462d 100644 --- a/clippy_lints/src/raw_strings.rs +++ b/clippy_lints/src/raw_strings.rs @@ -1,7 +1,7 @@ use std::iter::once; use std::ops::ControlFlow; -use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::snippet; use rustc_ast::ast::{Expr, ExprKind}; use rustc_ast::token::LitKind; @@ -9,6 +9,7 @@ use rustc_errors::Applicability; use rustc_lint::{EarlyContext, EarlyLintPass, LintContext}; use rustc_middle::lint::in_external_macro; use rustc_session::{declare_tool_lint, impl_lint_pass}; +use rustc_span::{BytePos, Pos, Span}; declare_clippy_lint! { /// ### What it does @@ -76,14 +77,33 @@ impl EarlyLintPass for RawStrings { } if !str.contains(['\\', '"']) { - span_lint_and_sugg( + span_lint_and_then( cx, NEEDLESS_RAW_STRINGS, expr.span, "unnecessary raw string literal", - "try", - format!("{}\"{}\"", prefix.replace('r', ""), lit.symbol), - Applicability::MachineApplicable, + |diag| { + let (start, end) = hash_spans(expr.span, prefix, 0, max); + + // BytePos: skip over the `b` in `br`, we checked the prefix appears in the source text + let r_pos = expr.span.lo() + BytePos::from_usize(prefix.len() - 1); + let start = start.with_lo(r_pos); + + if end.is_empty() { + diag.span_suggestion( + start, + "use a string literal instead", + format!("\"{}\"", str), + Applicability::MachineApplicable, + ); + } else { + diag.multipart_suggestion( + "try", + vec![(start, String::new()), (end, String::new())], + Applicability::MachineApplicable, + ); + } + }, ); return; @@ -96,13 +116,6 @@ impl EarlyLintPass for RawStrings { let num = str.as_bytes().iter().chain(once(&0)).try_fold(0u8, |acc, &b| { match b { b'"' if !following_quote => (following_quote, req) = (true, 1), - // I'm a bit surprised the compiler didn't optimize this out, there's no - // branch but it still ends up doing an unnecessary comparison, it's: - // - cmp r9b,1h - // - sbb cl,-1h - // which will add 1 if it's true. With this change, it becomes: - // - add cl,r9b - // isn't that so much nicer? b'#' => req += u8::from(following_quote), _ => { if following_quote { @@ -126,18 +139,58 @@ impl EarlyLintPass for RawStrings { }; if req < max { - let hashes = "#".repeat(req as usize); - - span_lint_and_sugg( + span_lint_and_then( cx, NEEDLESS_RAW_STRING_HASHES, expr.span, "unnecessary hashes around raw string literal", - "try", - format!(r#"{prefix}{hashes}"{}"{hashes}"#, lit.symbol), - Applicability::MachineApplicable, + |diag| { + let (start, end) = hash_spans(expr.span, prefix, req, max); + + let message = match max - req { + _ if req == 0 => "remove all the hashes around the literal".to_string(), + 1 => "remove one hash from both sides of the literal".to_string(), + n => format!("remove {n} hashes from both sides of the literal"), + }; + + diag.multipart_suggestion( + message, + vec![(start, String::new()), (end, String::new())], + Applicability::MachineApplicable, + ); + }, ); } } } } + +/// Returns spans pointing at the unneeded hashes, e.g. for a `req` of `1` and `max` of `3`: +/// +/// ```ignore +/// r###".."### +/// ^^ ^^ +/// ``` +fn hash_spans(literal_span: Span, prefix: &str, req: u8, max: u8) -> (Span, Span) { + let literal_span = literal_span.data(); + + // BytePos: we checked prefix appears literally in the source text + let hash_start = literal_span.lo + BytePos::from_usize(prefix.len()); + let hash_end = literal_span.hi; + + // BytePos: req/max are counts of the ASCII character # + let start = Span::new( + hash_start + BytePos(req.into()), + hash_start + BytePos(max.into()), + literal_span.ctxt, + None, + ); + let end = Span::new( + hash_end - BytePos(req.into()), + hash_end - BytePos(max.into()), + literal_span.ctxt, + None, + ); + + (start, end) +} diff --git a/clippy_lints/src/renamed_lints.rs b/clippy_lints/src/renamed_lints.rs index fc1fabcc0..613f1ecc6 100644 --- a/clippy_lints/src/renamed_lints.rs +++ b/clippy_lints/src/renamed_lints.rs @@ -15,6 +15,8 @@ pub static RENAMED_LINTS: &[(&str, &str)] = &[ ("clippy::eval_order_dependence", "clippy::mixed_read_write_in_expression"), ("clippy::identity_conversion", "clippy::useless_conversion"), ("clippy::if_let_some_result", "clippy::match_result_ok"), + ("clippy::incorrect_clone_impl_on_copy_type", "clippy::non_canonical_clone_impl"), + ("clippy::incorrect_partial_ord_impl_on_ord_type", "clippy::non_canonical_partial_ord_impl"), ("clippy::integer_arithmetic", "clippy::arithmetic_side_effects"), ("clippy::logic_bug", "clippy::overly_complex_bool_expr"), ("clippy::new_without_default_derive", "clippy::new_without_default"), @@ -38,12 +40,12 @@ pub static RENAMED_LINTS: &[(&str, &str)] = &[ ("clippy::drop_bounds", "drop_bounds"), ("clippy::drop_copy", "dropping_copy_types"), ("clippy::drop_ref", "dropping_references"), + ("clippy::fn_null_check", "useless_ptr_null_checks"), ("clippy::for_loop_over_option", "for_loops_over_fallibles"), ("clippy::for_loop_over_result", "for_loops_over_fallibles"), ("clippy::for_loops_over_fallibles", "for_loops_over_fallibles"), ("clippy::forget_copy", "forgetting_copy_types"), ("clippy::forget_ref", "forgetting_references"), - ("clippy::fn_null_check", "useless_ptr_null_checks"), ("clippy::into_iter_on_array", "array_into_iter"), ("clippy::invalid_atomic_ordering", "invalid_atomic_ordering"), ("clippy::invalid_ref", "invalid_value"), diff --git a/clippy_lints/src/slow_vector_initialization.rs b/clippy_lints/src/slow_vector_initialization.rs index c9ab622ad..9db18c297 100644 --- a/clippy_lints/src/slow_vector_initialization.rs +++ b/clippy_lints/src/slow_vector_initialization.rs @@ -1,4 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::macros::root_macro_call; use clippy_utils::sugg::Sugg; use clippy_utils::{ get_enclosing_block, is_expr_path_def_path, is_integer_literal, is_path_diagnostic_item, path_to_local, @@ -148,6 +149,15 @@ impl SlowVectorInit { /// - `Some(InitializedSize::Uninitialized)` for `Vec::new()` /// - `None` for other, unrelated kinds of expressions fn as_vec_initializer<'tcx>(cx: &LateContext<'_>, expr: &'tcx Expr<'tcx>) -> Option> { + // Generally don't warn if the vec initializer comes from an expansion, except for the vec! macro. + // This lets us still warn on `vec![]`, while ignoring other kinds of macros that may output an + // empty vec + if expr.span.from_expansion() + && root_macro_call(expr.span).map(|m| m.def_id) != cx.tcx.get_diagnostic_item(sym::vec_macro) + { + return None; + } + if let ExprKind::Call(func, [len_expr]) = expr.kind && is_expr_path_def_path(cx, func, &paths::VEC_WITH_CAPACITY) { @@ -205,7 +215,7 @@ impl SlowVectorInit { span_lint_and_then(cx, SLOW_VECTOR_INITIALIZATION, slow_fill.span, msg, |diag| { diag.span_suggestion( - vec_alloc.allocation_expr.span, + vec_alloc.allocation_expr.span.source_callsite(), "consider replacing this with", format!("vec![0; {len_expr}]"), Applicability::Unspecified, diff --git a/clippy_lints/src/std_instead_of_core.rs b/clippy_lints/src/std_instead_of_core.rs index f23916527..5f54a10d1 100644 --- a/clippy_lints/src/std_instead_of_core.rs +++ b/clippy_lints/src/std_instead_of_core.rs @@ -1,4 +1,5 @@ -use clippy_utils::diagnostics::span_lint_and_help; +use clippy_utils::diagnostics::span_lint_and_sugg; +use rustc_errors::Applicability; use rustc_hir::def::Res; use rustc_hir::def_id::DefId; use rustc_hir::{HirId, Path, PathSegment}; @@ -99,17 +100,17 @@ impl<'tcx> LateLintPass<'tcx> for StdReexports { && let Some(first_segment) = get_first_segment(path) && is_stable(cx, def_id) { - let (lint, msg, help) = match first_segment.ident.name { + let (lint, used_mod, replace_with) = match first_segment.ident.name { sym::std => match cx.tcx.crate_name(def_id.krate) { sym::core => ( STD_INSTEAD_OF_CORE, - "used import from `std` instead of `core`", - "consider importing the item from `core`", + "std", + "core", ), sym::alloc => ( STD_INSTEAD_OF_ALLOC, - "used import from `std` instead of `alloc`", - "consider importing the item from `alloc`", + "std", + "alloc", ), _ => { self.prev_span = path.span; @@ -120,8 +121,8 @@ impl<'tcx> LateLintPass<'tcx> for StdReexports { if cx.tcx.crate_name(def_id.krate) == sym::core { ( ALLOC_INSTEAD_OF_CORE, - "used import from `alloc` instead of `core`", - "consider importing the item from `core`", + "alloc", + "core", ) } else { self.prev_span = path.span; @@ -131,7 +132,14 @@ impl<'tcx> LateLintPass<'tcx> for StdReexports { _ => return, }; if path.span != self.prev_span { - span_lint_and_help(cx, lint, path.span, msg, None, help); + span_lint_and_sugg( + cx, + lint, + first_segment.ident.span, + &format!("used import from `{used_mod}` instead of `{replace_with}`"), + &format!("consider importing the item from `{replace_with}`"), + replace_with.to_string(), + Applicability::MachineApplicable); self.prev_span = path.span; } } diff --git a/clippy_lints/src/undocumented_unsafe_blocks.rs b/clippy_lints/src/undocumented_unsafe_blocks.rs index da8d8ed4c..6193fdeb4 100644 --- a/clippy_lints/src/undocumented_unsafe_blocks.rs +++ b/clippy_lints/src/undocumented_unsafe_blocks.rs @@ -341,44 +341,21 @@ fn block_parents_have_safety_comment( id: hir::HirId, ) -> bool { if let Some(node) = get_parent_node(cx.tcx, id) { - return match node { - Node::Expr(expr) => { - if let Some( - Node::Local(hir::Local { span, .. }) - | Node::Item(hir::Item { - kind: hir::ItemKind::Const(..) | ItemKind::Static(..), - span, - .. - }), - ) = get_parent_node(cx.tcx, expr.hir_id) - { - let hir_id = match get_parent_node(cx.tcx, expr.hir_id) { - Some(Node::Local(hir::Local { hir_id, .. })) => *hir_id, - Some(Node::Item(hir::Item { owner_id, .. })) => { - cx.tcx.hir().local_def_id_to_hir_id(owner_id.def_id) - }, - _ => unreachable!(), - }; - - // if unsafe block is part of a let/const/static statement, - // and accept_comment_above_statement is set to true - // we accept the safety comment in the line the precedes this statement. - accept_comment_above_statement - && span_with_attrs_in_body_has_safety_comment( - cx, - *span, - hir_id, - accept_comment_above_attributes, - ) - } else { - !is_branchy(expr) - && span_with_attrs_in_body_has_safety_comment( - cx, - expr.span, - expr.hir_id, - accept_comment_above_attributes, - ) - } + let (span, hir_id) = match node { + Node::Expr(expr) => match get_parent_node(cx.tcx, expr.hir_id) { + Some(Node::Local(hir::Local { span, hir_id, .. })) => (*span, *hir_id), + Some(Node::Item(hir::Item { + kind: hir::ItemKind::Const(..) | ItemKind::Static(..), + span, + owner_id, + .. + })) => (*span, cx.tcx.hir().local_def_id_to_hir_id(owner_id.def_id)), + _ => { + if is_branchy(expr) { + return false; + } + (expr.span, expr.hir_id) + }, }, Node::Stmt(hir::Stmt { kind: @@ -387,28 +364,27 @@ fn block_parents_have_safety_comment( | hir::StmtKind::Semi(hir::Expr { span, hir_id, .. }), .. }) - | Node::Local(hir::Local { span, hir_id, .. }) => { - span_with_attrs_in_body_has_safety_comment(cx, *span, *hir_id, accept_comment_above_attributes) - }, + | Node::Local(hir::Local { span, hir_id, .. }) => (*span, *hir_id), Node::Item(hir::Item { kind: hir::ItemKind::Const(..) | ItemKind::Static(..), span, owner_id, .. - }) => span_with_attrs_in_body_has_safety_comment( - cx, - *span, - cx.tcx.hir().local_def_id_to_hir_id(owner_id.def_id), - accept_comment_above_attributes, - ), - _ => false, + }) => (*span, cx.tcx.hir().local_def_id_to_hir_id(owner_id.def_id)), + _ => return false, }; + // if unsafe block is part of a let/const/static statement, + // and accept_comment_above_statement is set to true + // we accept the safety comment in the line the precedes this statement. + accept_comment_above_statement + && span_with_attrs_has_safety_comment(cx, span, hir_id, accept_comment_above_attributes) + } else { + false } - false } /// Extends `span` to also include its attributes, then checks if that span has a safety comment. -fn span_with_attrs_in_body_has_safety_comment( +fn span_with_attrs_has_safety_comment( cx: &LateContext<'_>, span: Span, hir_id: HirId, @@ -420,7 +396,7 @@ fn span_with_attrs_in_body_has_safety_comment( span }; - span_in_body_has_safety_comment(cx, span) + span_has_safety_comment(cx, span) } /// Checks if an expression is "branchy", e.g. loop, match/if/etc. @@ -444,7 +420,7 @@ fn block_has_safety_comment(cx: &LateContext<'_>, span: Span) -> bool { matches!( span_from_macro_expansion_has_safety_comment(cx, span), HasSafetyComment::Yes(_) - ) || span_in_body_has_safety_comment(cx, span) + ) || span_has_safety_comment(cx, span) } fn include_attrs_in_span(cx: &LateContext<'_>, hir_id: HirId, span: Span) -> Span { @@ -633,29 +609,36 @@ fn get_body_search_span(cx: &LateContext<'_>) -> Option { let body = cx.enclosing_body?; let map = cx.tcx.hir(); let mut span = map.body(body).value.span; + let mut maybe_global_var = false; for (_, node) in map.parent_iter(body.hir_id) { match node { Node::Expr(e) => span = e.span, - Node::Block(_) - | Node::Arm(_) - | Node::Stmt(_) - | Node::Local(_) - | Node::Item(hir::Item { + Node::Block(_) | Node::Arm(_) | Node::Stmt(_) | Node::Local(_) => (), + Node::Item(hir::Item { kind: hir::ItemKind::Const(..) | ItemKind::Static(..), .. - }) => (), + }) => maybe_global_var = true, + Node::Item(hir::Item { + kind: hir::ItemKind::Mod(_), + span: item_span, + .. + }) => { + span = *item_span; + break; + }, + Node::Crate(mod_) if maybe_global_var => { + span = mod_.spans.inner_span; + }, _ => break, } } Some(span) } -fn span_in_body_has_safety_comment(cx: &LateContext<'_>, span: Span) -> bool { +fn span_has_safety_comment(cx: &LateContext<'_>, span: Span) -> bool { let source_map = cx.sess().source_map(); let ctxt = span.ctxt(); - if ctxt == SyntaxContext::root() - && let Some(search_span) = get_body_search_span(cx) - { + if ctxt.is_root() && let Some(search_span) = get_body_search_span(cx) { if let Ok(unsafe_line) = source_map.lookup_line(span.lo()) && let Some(body_span) = walk_span_to_context(search_span, SyntaxContext::root()) && let Ok(body_line) = source_map.lookup_line(body_span.lo()) diff --git a/clippy_lints/src/unit_return_expecting_ord.rs b/clippy_lints/src/unit_return_expecting_ord.rs index dd829ded0..de4b8738e 100644 --- a/clippy_lints/src/unit_return_expecting_ord.rs +++ b/clippy_lints/src/unit_return_expecting_ord.rs @@ -26,7 +26,7 @@ declare_clippy_lint! { /// /// ### Example /// ```rust - /// let mut twins = vec!((1, 1), (2, 2)); + /// let mut twins = vec![(1, 1), (2, 2)]; /// twins.sort_by_key(|x| { x.1; }); /// ``` #[clippy::version = "1.47.0"] diff --git a/clippy_lints/src/unwrap.rs b/clippy_lints/src/unwrap.rs index c99b0290c..9a0d83d83 100644 --- a/clippy_lints/src/unwrap.rs +++ b/clippy_lints/src/unwrap.rs @@ -1,15 +1,18 @@ use clippy_utils::diagnostics::span_lint_hir_and_then; use clippy_utils::ty::is_type_diagnostic_item; -use clippy_utils::usage::is_potentially_mutated; +use clippy_utils::usage::is_potentially_local_place; use clippy_utils::{higher, path_to_local}; use if_chain::if_chain; use rustc_errors::Applicability; use rustc_hir::intravisit::{walk_expr, walk_fn, FnKind, Visitor}; -use rustc_hir::{BinOpKind, Body, Expr, ExprKind, FnDecl, HirId, PathSegment, UnOp}; +use rustc_hir::{BinOpKind, Body, Expr, ExprKind, FnDecl, HirId, Node, PathSegment, UnOp}; +use rustc_hir_typeck::expr_use_visitor::{Delegate, ExprUseVisitor, PlaceWithHirId}; +use rustc_infer::infer::TyCtxtInferExt; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::hir::nested_filter; use rustc_middle::lint::in_external_macro; -use rustc_middle::ty::Ty; +use rustc_middle::mir::FakeReadCause; +use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_session::{declare_lint_pass, declare_tool_lint}; use rustc_span::def_id::LocalDefId; use rustc_span::source_map::Span; @@ -192,6 +195,55 @@ fn collect_unwrap_info<'tcx>( Vec::new() } +/// A HIR visitor delegate that checks if a local variable of type `Option<_>` is mutated, +/// *except* for if `Option::as_mut` is called. +/// The reason for why we allow that one specifically is that `.as_mut()` cannot change +/// the option to `None`, and that is important because this lint relies on the fact that +/// `is_some` + `unwrap` is equivalent to `if let Some(..) = ..`, which it would not be if +/// the option is changed to None between `is_some` and `unwrap`. +/// (And also `.as_mut()` is a somewhat common method that is still worth linting on.) +struct MutationVisitor<'tcx> { + is_mutated: bool, + local_id: HirId, + tcx: TyCtxt<'tcx>, +} + +/// Checks if the parent of the expression pointed at by the given `HirId` is a call to +/// `Option::as_mut`. +/// +/// Used by the mutation visitor to specifically allow `.as_mut()` calls. +/// In particular, the `HirId` that the visitor receives is the id of the local expression +/// (i.e. the `x` in `x.as_mut()`), and that is the reason for why we care about its parent +/// expression: that will be where the actual method call is. +fn is_option_as_mut_use(tcx: TyCtxt<'_>, expr_id: HirId) -> bool { + if let Node::Expr(mutating_expr) = tcx.hir().get_parent(expr_id) + && let ExprKind::MethodCall(path, ..) = mutating_expr.kind + { + path.ident.name.as_str() == "as_mut" + } else { + false + } +} + +impl<'tcx> Delegate<'tcx> for MutationVisitor<'tcx> { + fn borrow(&mut self, cat: &PlaceWithHirId<'tcx>, diag_expr_id: HirId, bk: ty::BorrowKind) { + if let ty::BorrowKind::MutBorrow = bk + && is_potentially_local_place(self.local_id, &cat.place) + && !is_option_as_mut_use(self.tcx, diag_expr_id) + { + self.is_mutated = true; + } + } + + fn mutate(&mut self, _: &PlaceWithHirId<'tcx>, _: HirId) { + self.is_mutated = true; + } + + fn consume(&mut self, _: &PlaceWithHirId<'tcx>, _: HirId) {} + + fn fake_read(&mut self, _: &PlaceWithHirId<'tcx>, _: FakeReadCause, _: HirId) {} +} + impl<'a, 'tcx> UnwrappableVariablesVisitor<'a, 'tcx> { fn visit_branch( &mut self, @@ -202,10 +254,26 @@ impl<'a, 'tcx> UnwrappableVariablesVisitor<'a, 'tcx> { ) { let prev_len = self.unwrappables.len(); for unwrap_info in collect_unwrap_info(self.cx, if_expr, cond, branch, else_branch, true) { - if is_potentially_mutated(unwrap_info.local_id, cond, self.cx) - || is_potentially_mutated(unwrap_info.local_id, branch, self.cx) - { - // if the variable is mutated, we don't know whether it can be unwrapped: + let mut delegate = MutationVisitor { + tcx: self.cx.tcx, + is_mutated: false, + local_id: unwrap_info.local_id, + }; + + let infcx = self.cx.tcx.infer_ctxt().build(); + let mut vis = ExprUseVisitor::new( + &mut delegate, + &infcx, + cond.hir_id.owner.def_id, + self.cx.param_env, + self.cx.typeck_results(), + ); + vis.walk_expr(cond); + vis.walk_expr(branch); + + if delegate.is_mutated { + // if the variable is mutated, we don't know whether it can be unwrapped. + // it might have been changed to `None` in between `is_some` + `unwrap`. continue; } self.unwrappables.push(unwrap_info); @@ -215,6 +283,27 @@ impl<'a, 'tcx> UnwrappableVariablesVisitor<'a, 'tcx> { } } +enum AsRefKind { + AsRef, + AsMut, +} + +/// Checks if the expression is a method call to `as_{ref,mut}` and returns the receiver of it. +/// If it isn't, the expression itself is returned. +fn consume_option_as_ref<'tcx>(expr: &'tcx Expr<'tcx>) -> (&'tcx Expr<'tcx>, Option) { + if let ExprKind::MethodCall(path, recv, ..) = expr.kind { + if path.ident.name == sym::as_ref { + (recv, Some(AsRefKind::AsRef)) + } else if path.ident.name.as_str() == "as_mut" { + (recv, Some(AsRefKind::AsMut)) + } else { + (expr, None) + } + } else { + (expr, None) + } +} + impl<'a, 'tcx> Visitor<'tcx> for UnwrappableVariablesVisitor<'a, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; @@ -233,6 +322,7 @@ impl<'a, 'tcx> Visitor<'tcx> for UnwrappableVariablesVisitor<'a, 'tcx> { // find `unwrap[_err]()` calls: if_chain! { if let ExprKind::MethodCall(method_name, self_arg, ..) = expr.kind; + let (self_arg, as_ref_kind) = consume_option_as_ref(self_arg); if let Some(id) = path_to_local(self_arg); if [sym::unwrap, sym::expect, sym!(unwrap_err)].contains(&method_name.ident.name); let call_to_unwrap = [sym::unwrap, sym::expect].contains(&method_name.ident.name); @@ -268,7 +358,12 @@ impl<'a, 'tcx> Visitor<'tcx> for UnwrappableVariablesVisitor<'a, 'tcx> { unwrappable.check.span.with_lo(unwrappable.if_expr.span.lo()), "try", format!( - "if let {suggested_pattern} = {unwrappable_variable_name}", + "if let {suggested_pattern} = {borrow_prefix}{unwrappable_variable_name}", + borrow_prefix = match as_ref_kind { + Some(AsRefKind::AsRef) => "&", + Some(AsRefKind::AsMut) => "&mut ", + None => "", + }, ), // We don't track how the unwrapped value is used inside the // block or suggest deleting the unwrap, so we can't offer a diff --git a/clippy_lints/src/utils/conf.rs b/clippy_lints/src/utils/conf.rs index 58ae0656d..268894755 100644 --- a/clippy_lints/src/utils/conf.rs +++ b/clippy_lints/src/utils/conf.rs @@ -561,6 +561,26 @@ define_Conf! { /// Which crates to allow absolute paths from (absolute_paths_allowed_crates: rustc_data_structures::fx::FxHashSet = rustc_data_structures::fx::FxHashSet::default()), + /// Lint: EXPLICIT_ITER_LOOP + /// + /// Whether to recommend using implicit into iter for reborrowed values. + /// + /// #### Example + /// ``` + /// let mut vec = vec![1, 2, 3]; + /// let rmvec = &mut vec; + /// for _ in rmvec.iter() {} + /// for _ in rmvec.iter_mut() {} + /// ``` + /// + /// Use instead: + /// ``` + /// let mut vec = vec![1, 2, 3]; + /// let rmvec = &mut vec; + /// for _ in &*rmvec {} + /// for _ in &mut *rmvec {} + /// ``` + (enforce_iter_loop_reborrow: bool = false), } /// Search for the configuration file. diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs index 6c4cec595..4ef3ec196 100644 --- a/clippy_utils/src/lib.rs +++ b/clippy_utils/src/lib.rs @@ -5,6 +5,7 @@ #![feature(lint_reasons)] #![feature(never_type)] #![feature(rustc_private)] +#![feature(assert_matches)] #![recursion_limit = "512"] #![cfg_attr(feature = "deny-warnings", deny(warnings))] #![allow(clippy::missing_errors_doc, clippy::missing_panics_doc, clippy::must_use_candidate)] @@ -110,6 +111,7 @@ use rustc_span::source_map::SourceMap; use rustc_span::symbol::{kw, Ident, Symbol}; use rustc_span::{sym, Span}; use rustc_target::abi::Integer; +use visitors::Visitable; use crate::consts::{constant, miri_to_const, Constant}; use crate::higher::Range; @@ -1286,7 +1288,7 @@ pub fn contains_name<'tcx>(name: Symbol, expr: &'tcx Expr<'_>, cx: &LateContext< } /// Returns `true` if `expr` contains a return expression -pub fn contains_return(expr: &hir::Expr<'_>) -> bool { +pub fn contains_return<'tcx>(expr: impl Visitable<'tcx>) -> bool { for_each_expr(expr, |e| { if matches!(e.kind, hir::ExprKind::Ret(..)) { ControlFlow::Break(()) diff --git a/clippy_utils/src/paths.rs b/clippy_utils/src/paths.rs index a567c5cbd..2fb24b5c7 100644 --- a/clippy_utils/src/paths.rs +++ b/clippy_utils/src/paths.rs @@ -49,6 +49,7 @@ pub const IDENT: [&str; 3] = ["rustc_span", "symbol", "Ident"]; pub const IDENT_AS_STR: [&str; 4] = ["rustc_span", "symbol", "Ident", "as_str"]; pub const INSERT_STR: [&str; 4] = ["alloc", "string", "String", "insert_str"]; pub const ITER_EMPTY: [&str; 5] = ["core", "iter", "sources", "empty", "Empty"]; +pub const ITER_ONCE: [&str; 5] = ["core", "iter", "sources", "once", "Once"]; pub const ITERTOOLS_NEXT_TUPLE: [&str; 3] = ["itertools", "Itertools", "next_tuple"]; #[cfg(feature = "internal")] pub const KW_MODULE: [&str; 3] = ["rustc_span", "symbol", "kw"]; @@ -163,3 +164,4 @@ pub const DEBUG_STRUCT: [&str; 4] = ["core", "fmt", "builders", "DebugStruct"]; pub const ORD_CMP: [&str; 4] = ["core", "cmp", "Ord", "cmp"]; #[expect(clippy::invalid_paths)] // not sure why it thinks this, it works so pub const BOOL_THEN: [&str; 4] = ["core", "bool", "", "then"]; +pub const ARRAY_INTO_ITER: [&str; 4] = ["core", "array", "iter", "IntoIter"]; diff --git a/clippy_utils/src/source.rs b/clippy_utils/src/source.rs index 600cd084c..31cb42109 100644 --- a/clippy_utils/src/source.rs +++ b/clippy_utils/src/source.rs @@ -362,7 +362,7 @@ pub fn snippet_block_with_context<'a>( } /// Same as `snippet_with_applicability`, but first walks the span up to the given context. This -/// will result in the macro call, rather then the expansion, if the span is from a child context. +/// will result in the macro call, rather than the expansion, if the span is from a child context. /// If the span is not from a child context, it will be used directly instead. /// /// e.g. Given the expression `&vec![]`, getting a snippet from the span for `vec![]` as a HIR node diff --git a/clippy_utils/src/sugg.rs b/clippy_utils/src/sugg.rs index ee5a49a20..ae8ee371f 100644 --- a/clippy_utils/src/sugg.rs +++ b/clippy_utils/src/sugg.rs @@ -88,7 +88,7 @@ impl<'a> Sugg<'a> { } /// Same as `hir`, but first walks the span up to the given context. This will result in the - /// macro call, rather then the expansion, if the span is from a child context. If the span is + /// macro call, rather than the expansion, if the span is from a child context. If the span is /// not from a child context, it will be used directly instead. /// /// e.g. Given the expression `&vec![]`, getting a snippet from the span for `vec![]` as a HIR diff --git a/clippy_utils/src/ty.rs b/clippy_utils/src/ty.rs index a05f682aa..f0b4ede35 100644 --- a/clippy_utils/src/ty.rs +++ b/clippy_utils/src/ty.rs @@ -27,6 +27,7 @@ use rustc_target::abi::{Size, VariantIdx}; use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt as _; use rustc_trait_selection::traits::query::normalize::QueryNormalizeExt; use rustc_trait_selection::traits::{Obligation, ObligationCause}; +use std::assert_matches::debug_assert_matches; use std::iter; use crate::{match_def_path, path_res, paths}; @@ -259,7 +260,11 @@ pub fn implements_trait_with_env_from_iter<'tcx>( })), ); - debug_assert_eq!(tcx.def_kind(trait_id), DefKind::Trait); + debug_assert_matches!( + tcx.def_kind(trait_id), + DefKind::Trait | DefKind::TraitAlias, + "`DefId` must belong to a trait or trait alias" + ); #[cfg(debug_assertions)] assert_generic_args_match(tcx, trait_id, trait_ref.args); diff --git a/clippy_utils/src/ty/type_certainty/mod.rs b/clippy_utils/src/ty/type_certainty/mod.rs index 06fd95290..dc7756533 100644 --- a/clippy_utils/src/ty/type_certainty/mod.rs +++ b/clippy_utils/src/ty/type_certainty/mod.rs @@ -150,7 +150,7 @@ fn generic_args_certainty(cx: &LateContext<'_>, args: &GenericArgs<'_>) -> Certa } /// Tries to tell whether a `QPath` resolves to something certain, e.g., whether all of its path -/// segments generic arguments are are instantiated. +/// segments generic arguments are instantiated. /// /// `qpath` could refer to either a type or a value. The heuristic never needs the `DefId` of a /// value. So `DefId`s are retained only when `resolves_to_type` is true. diff --git a/clippy_utils/src/usage.rs b/clippy_utils/src/usage.rs index 39ef76348..ec131c7f6 100644 --- a/clippy_utils/src/usage.rs +++ b/clippy_utils/src/usage.rs @@ -4,7 +4,7 @@ use core::ops::ControlFlow; use hir::def::Res; use rustc_hir::intravisit::{self, Visitor}; use rustc_hir::{self as hir, Expr, ExprKind, HirId, HirIdSet}; -use rustc_hir_typeck::expr_use_visitor::{Delegate, ExprUseVisitor, PlaceBase, PlaceWithHirId}; +use rustc_hir_typeck::expr_use_visitor::{Delegate, ExprUseVisitor, Place, PlaceBase, PlaceWithHirId}; use rustc_infer::infer::TyCtxtInferExt; use rustc_lint::LateContext; use rustc_middle::hir::nested_filter; @@ -37,6 +37,17 @@ pub fn is_potentially_mutated<'tcx>(variable: HirId, expr: &'tcx Expr<'_>, cx: & mutated_variables(expr, cx).map_or(true, |mutated| mutated.contains(&variable)) } +pub fn is_potentially_local_place(local_id: HirId, place: &Place<'_>) -> bool { + match place.base { + PlaceBase::Local(id) => id == local_id, + PlaceBase::Upvar(_) => { + // Conservatively assume yes. + true + }, + _ => false, + } +} + struct MutVarsDelegate { used_mutably: HirIdSet, skip: bool, diff --git a/rust-toolchain b/rust-toolchain index 19c09b58b..9f5116eb7 100644 --- a/rust-toolchain +++ b/rust-toolchain @@ -1,3 +1,3 @@ [toolchain] -channel = "nightly-2023-08-24" +channel = "nightly-2023-09-07" components = ["cargo", "llvm-tools", "rust-src", "rust-std", "rustc", "rustc-dev", "rustfmt"] diff --git a/tests/compile-test.rs b/tests/compile-test.rs index c1c3d4a86..9fcc269db 100644 --- a/tests/compile-test.rs +++ b/tests/compile-test.rs @@ -4,7 +4,7 @@ #![warn(rust_2018_idioms, unused_lifetimes)] #![allow(unused_extern_crates)] -use ui_test::{status_emitter, Args, CommandBuilder, Config, Match, Mode, OutputConflictHandling, RustfixMode}; +use ui_test::{status_emitter, Args, CommandBuilder, Config, Match, Mode, OutputConflictHandling}; use std::collections::BTreeMap; use std::env::{self, set_var, var_os}; @@ -114,36 +114,26 @@ fn canonicalize(path: impl AsRef) -> PathBuf { } fn base_config(test_dir: &str) -> (Config, Args) { - let bless = var_os("RUSTC_BLESS").is_some_and(|v| v != "0") || env::args().any(|arg| arg == "--bless"); - - let args = Args { - filters: env::var("TESTNAME") - .map(|filters| filters.split(',').map(str::to_string).collect()) - .unwrap_or_default(), - quiet: false, - check: !bless, - threads: match std::env::var_os("RUST_TEST_THREADS") { - Some(n) => n.to_str().unwrap().parse().unwrap(), - None => std::thread::available_parallelism().unwrap(), - }, - skip: Vec::new(), - }; + let mut args = Args::test().unwrap(); + args.bless |= var_os("RUSTC_BLESS").is_some_and(|v| v != "0"); let mut config = Config { mode: Mode::Yolo { - rustfix: RustfixMode::Everything, + rustfix: ui_test::RustfixMode::Everything, }, stderr_filters: vec![(Match::PathBackslash, b"/")], stdout_filters: vec![], - output_conflict_handling: if bless { - OutputConflictHandling::Bless - } else { - OutputConflictHandling::Error("cargo uibless".into()) - }, + filter_files: env::var("TESTNAME") + .map(|filters| filters.split(',').map(str::to_string).collect()) + .unwrap_or_default(), target: None, out_dir: canonicalize(var_os("CARGO_TARGET_DIR").unwrap_or_else(|| "target".into())).join("ui_test"), ..Config::rustc(Path::new("tests").join(test_dir)) }; + config.with_args(&args, /* bless by default */ false); + if let OutputConflictHandling::Error(err) = &mut config.output_conflict_handling { + *err = "cargo uibless".into(); + } let current_exe_path = env::current_exe().unwrap(); let deps_path = current_exe_path.parent().unwrap(); let profile_path = deps_path.parent().unwrap(); @@ -186,7 +176,6 @@ fn run_ui() { ui_test::run_tests_generic( vec![config], - args, ui_test::default_file_filter, ui_test::default_per_file_config, if quiet { @@ -211,7 +200,6 @@ fn run_internal_tests() { ui_test::run_tests_generic( vec![config], - args, ui_test::default_file_filter, ui_test::default_per_file_config, if quiet { @@ -245,7 +233,6 @@ fn run_ui_toml() { ui_test::run_tests_generic( vec![config], - args, ui_test::default_file_filter, |config, path, _file_contents| { config @@ -302,10 +289,16 @@ fn run_ui_cargo() { let quiet = args.quiet; + let ignored_32bit = |path: &Path| { + // FIXME: for some reason the modules are linted in a different order for this test + cfg!(target_pointer_width = "32") && path.ends_with("tests/ui-cargo/module_style/fail_mod/Cargo.toml") + }; + ui_test::run_tests_generic( vec![config], - args, - |path, args, _config| path.ends_with("Cargo.toml") && ui_test::default_filter_by_arg(path, args), + |path, config| { + path.ends_with("Cargo.toml") && ui_test::default_any_file_filter(path, config) && !ignored_32bit(path) + }, |config, path, _file_contents| { config.out_dir = canonicalize( std::env::current_dir() diff --git a/tests/ui-cargo/cargo_common_metadata/fail/Cargo.stderr b/tests/ui-cargo/cargo_common_metadata/fail/Cargo.stderr index e161507b5..4d97d5496 100644 --- a/tests/ui-cargo/cargo_common_metadata/fail/Cargo.stderr +++ b/tests/ui-cargo/cargo_common_metadata/fail/Cargo.stderr @@ -1,6 +1,7 @@ error: package `cargo_common_metadata_fail` is missing `package.description` metadata | = note: `-D clippy::cargo-common-metadata` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::cargo_common_metadata)]` error: package `cargo_common_metadata_fail` is missing `either package.license or package.license_file` metadata diff --git a/tests/ui-cargo/cargo_common_metadata/fail_publish/Cargo.stderr b/tests/ui-cargo/cargo_common_metadata/fail_publish/Cargo.stderr index dbf494cc3..9eb884f08 100644 --- a/tests/ui-cargo/cargo_common_metadata/fail_publish/Cargo.stderr +++ b/tests/ui-cargo/cargo_common_metadata/fail_publish/Cargo.stderr @@ -1,6 +1,7 @@ error: package `cargo_common_metadata_fail_publish` is missing `package.description` metadata | = note: `-D clippy::cargo-common-metadata` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::cargo_common_metadata)]` error: package `cargo_common_metadata_fail_publish` is missing `either package.license or package.license_file` metadata diff --git a/tests/ui-cargo/cargo_common_metadata/fail_publish_true/Cargo.stderr b/tests/ui-cargo/cargo_common_metadata/fail_publish_true/Cargo.stderr index ae5967406..f9685a784 100644 --- a/tests/ui-cargo/cargo_common_metadata/fail_publish_true/Cargo.stderr +++ b/tests/ui-cargo/cargo_common_metadata/fail_publish_true/Cargo.stderr @@ -1,6 +1,7 @@ error: package `cargo_common_metadata_fail_publish_true` is missing `package.description` metadata | = note: `-D clippy::cargo-common-metadata` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::cargo_common_metadata)]` error: package `cargo_common_metadata_fail_publish_true` is missing `either package.license or package.license_file` metadata diff --git a/tests/ui-cargo/duplicate_mod/fail/Cargo.stderr b/tests/ui-cargo/duplicate_mod/fail/Cargo.stderr index fde3a1e65..912ea9bb4 100644 --- a/tests/ui-cargo/duplicate_mod/fail/Cargo.stderr +++ b/tests/ui-cargo/duplicate_mod/fail/Cargo.stderr @@ -9,6 +9,7 @@ error: file is loaded as a module multiple times: `src/b.rs` | = help: replace all but one `mod` item with `use` items = note: `-D clippy::duplicate-mod` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::duplicate_mod)]` error: file is loaded as a module multiple times: `src/c.rs` --> src/main.rs:9:1 diff --git a/tests/ui-cargo/feature_name/fail/Cargo.stderr b/tests/ui-cargo/feature_name/fail/Cargo.stderr index da2db45d3..388f49fb2 100644 --- a/tests/ui-cargo/feature_name/fail/Cargo.stderr +++ b/tests/ui-cargo/feature_name/fail/Cargo.stderr @@ -2,6 +2,7 @@ error: the "no-" prefix in the feature name "no-qaq" is negative | = help: consider renaming the feature to "qaq", but make sure the feature adds functionality = note: `-D clippy::negative-feature-names` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::negative_feature_names)]` error: the "no_" prefix in the feature name "no_qaq" is negative | @@ -19,6 +20,7 @@ error: the "-support" suffix in the feature name "qvq-support" is redundant | = help: consider renaming the feature to "qvq" = note: `-D clippy::redundant-feature-names` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::redundant_feature_names)]` error: the "_support" suffix in the feature name "qvq_support" is redundant | diff --git a/tests/ui-cargo/module_style/fail_mod/Cargo.stderr b/tests/ui-cargo/module_style/fail_mod/Cargo.stderr index c2907f319..902330e17 100644 --- a/tests/ui-cargo/module_style/fail_mod/Cargo.stderr +++ b/tests/ui-cargo/module_style/fail_mod/Cargo.stderr @@ -6,6 +6,7 @@ error: `mod.rs` files are required, found `src/bad/inner.rs` | = help: move `src/bad/inner.rs` to `src/bad/inner/mod.rs` = note: `-D clippy::self-named-module-files` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::self_named_module_files)]` error: `mod.rs` files are required, found `src/bad/inner/stuff.rs` --> src/bad/inner/stuff.rs:1:1 diff --git a/tests/ui-cargo/module_style/fail_mod_remap/Cargo.stderr b/tests/ui-cargo/module_style/fail_mod_remap/Cargo.stderr index fcf1a3c5e..d776feb7f 100644 --- a/tests/ui-cargo/module_style/fail_mod_remap/Cargo.stderr +++ b/tests/ui-cargo/module_style/fail_mod_remap/Cargo.stderr @@ -6,5 +6,6 @@ error: `mod.rs` files are required, found `src/bad.rs` | = help: move `src/bad.rs` to `src/bad/mod.rs` = note: `-D clippy::self-named-module-files` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::self_named_module_files)]` error: could not compile `fail-mod-remap` (bin "fail-mod-remap") due to previous error diff --git a/tests/ui-cargo/module_style/fail_no_mod/Cargo.stderr b/tests/ui-cargo/module_style/fail_no_mod/Cargo.stderr index f61642ca2..22558bc4c 100644 --- a/tests/ui-cargo/module_style/fail_no_mod/Cargo.stderr +++ b/tests/ui-cargo/module_style/fail_no_mod/Cargo.stderr @@ -6,5 +6,6 @@ error: `mod.rs` files are not allowed, found `src/bad/mod.rs` | = help: move `src/bad/mod.rs` to `src/bad.rs` = note: `-D clippy::mod-module-files` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::mod_module_files)]` error: could not compile `fail-no-mod` (bin "fail-no-mod") due to previous error diff --git a/tests/ui-cargo/multiple_crate_versions/fail/Cargo.stderr b/tests/ui-cargo/multiple_crate_versions/fail/Cargo.stderr index 5bcce9204..4beedc108 100644 --- a/tests/ui-cargo/multiple_crate_versions/fail/Cargo.stderr +++ b/tests/ui-cargo/multiple_crate_versions/fail/Cargo.stderr @@ -1,5 +1,6 @@ error: multiple versions for dependency `winapi`: 0.2.8, 0.3.9 | = note: `-D clippy::multiple-crate-versions` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::multiple_crate_versions)]` error: could not compile `multiple_crate_versions` (bin "multiple_crate_versions") due to previous error diff --git a/tests/ui-cargo/wildcard_dependencies/fail/Cargo.stderr b/tests/ui-cargo/wildcard_dependencies/fail/Cargo.stderr index b1578c9f3..65a19bb07 100644 --- a/tests/ui-cargo/wildcard_dependencies/fail/Cargo.stderr +++ b/tests/ui-cargo/wildcard_dependencies/fail/Cargo.stderr @@ -1,5 +1,6 @@ error: wildcard dependency for `regex` | = note: `-D clippy::wildcard-dependencies` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::wildcard_dependencies)]` error: could not compile `wildcard_dependencies` (bin "wildcard_dependencies") due to previous error diff --git a/tests/ui-internal/check_formulation.stderr b/tests/ui-internal/check_formulation.stderr index 10eabca4b..96fa61760 100644 --- a/tests/ui-internal/check_formulation.stderr +++ b/tests/ui-internal/check_formulation.stderr @@ -6,6 +6,7 @@ LL | /// Check for lint formulations that are correct | = help: try using `Checks for` instead = note: `-D clippy::almost-standard-lint-formulation` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::almost_standard_lint_formulation)]` error: non-standard lint formulation --> $DIR/check_formulation.rs:33:5 diff --git a/tests/ui-internal/if_chain_style.stderr b/tests/ui-internal/if_chain_style.stderr index b12df2786..ea0495532 100644 --- a/tests/ui-internal/if_chain_style.stderr +++ b/tests/ui-internal/if_chain_style.stderr @@ -16,6 +16,7 @@ help: this `let` statement can also be in the `if_chain!` LL | let x = ""; | ^^^^^^^^^^^ = note: `-D clippy::if-chain-style` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::if_chain_style)]` error: `if a && b;` should be `if a; if b;` --> $DIR/if_chain_style.rs:24:12 diff --git a/tests/ui-internal/invalid_paths.stderr b/tests/ui-internal/invalid_paths.stderr index 0e8508869..988d32d52 100644 --- a/tests/ui-internal/invalid_paths.stderr +++ b/tests/ui-internal/invalid_paths.stderr @@ -5,6 +5,7 @@ LL | pub const TRANSMUTE: [&str; 4] = ["core", "intrinsics", "", "transmute" | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: `-D clippy::invalid-paths` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::invalid_paths)]` error: invalid path --> $DIR/invalid_paths.rs:18:5 diff --git a/tests/ui-internal/unnecessary_def_path_hardcoded_path.stderr b/tests/ui-internal/unnecessary_def_path_hardcoded_path.stderr index 3ca45404e..58b1fd92b 100644 --- a/tests/ui-internal/unnecessary_def_path_hardcoded_path.stderr +++ b/tests/ui-internal/unnecessary_def_path_hardcoded_path.stderr @@ -6,6 +6,7 @@ LL | const DEREF_TRAIT: [&str; 4] = ["core", "ops", "deref", "Deref"]; | = help: convert all references to use `sym::Deref` = note: `-D clippy::unnecessary-def-path` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::unnecessary_def_path)]` error: hardcoded path to a language item --> $DIR/unnecessary_def_path_hardcoded_path.rs:11:40 diff --git a/tests/ui-toml/disallowed_macros/auxiliary/macros.rs b/tests/ui-toml/disallowed_macros/auxiliary/macros.rs index fcaeace0e..f4166b227 100644 --- a/tests/ui-toml/disallowed_macros/auxiliary/macros.rs +++ b/tests/ui-toml/disallowed_macros/auxiliary/macros.rs @@ -30,3 +30,18 @@ macro_rules! item { const ITEM: usize = 1; }; } + +#[macro_export] +macro_rules! binop { + ($t:tt) => { + $t + $t + }; +} + +#[macro_export] +macro_rules! attr { + ($i:item) => { + #[repr(C)] + $i + }; +} diff --git a/tests/ui-toml/disallowed_macros/clippy.toml b/tests/ui-toml/disallowed_macros/clippy.toml index c8fe8be9a..85f1b71eb 100644 --- a/tests/ui-toml/disallowed_macros/clippy.toml +++ b/tests/ui-toml/disallowed_macros/clippy.toml @@ -8,4 +8,6 @@ disallowed-macros = [ "macros::ty", "macros::pat", "macros::item", + "macros::binop", + "macros::attr", ] diff --git a/tests/ui-toml/disallowed_macros/disallowed_macros.rs b/tests/ui-toml/disallowed_macros/disallowed_macros.rs index ba919b487..4a3d55e13 100644 --- a/tests/ui-toml/disallowed_macros/disallowed_macros.rs +++ b/tests/ui-toml/disallowed_macros/disallowed_macros.rs @@ -20,11 +20,14 @@ fn main() { let macros::pat!() = 1; let _: macros::ty!() = ""; macros::item!(); + let _ = macros::binop!(1); eprintln!("allowed"); } -struct S; +macros::attr! { + struct S; +} impl S { macros::item!(); diff --git a/tests/ui-toml/disallowed_macros/disallowed_macros.stderr b/tests/ui-toml/disallowed_macros/disallowed_macros.stderr index 0eebd587a..3c6f59b16 100644 --- a/tests/ui-toml/disallowed_macros/disallowed_macros.stderr +++ b/tests/ui-toml/disallowed_macros/disallowed_macros.stderr @@ -63,23 +63,37 @@ error: use of a disallowed macro `macros::item` LL | macros::item!(); | ^^^^^^^^^^^^^^^ +error: use of a disallowed macro `macros::binop` + --> $DIR/disallowed_macros.rs:23:13 + | +LL | let _ = macros::binop!(1); + | ^^^^^^^^^^^^^^^^^ + +error: use of a disallowed macro `macros::attr` + --> $DIR/disallowed_macros.rs:28:1 + | +LL | / macros::attr! { +LL | | struct S; +LL | | } + | |_^ + error: use of a disallowed macro `macros::item` - --> $DIR/disallowed_macros.rs:30:5 + --> $DIR/disallowed_macros.rs:33:5 | LL | macros::item!(); | ^^^^^^^^^^^^^^^ error: use of a disallowed macro `macros::item` - --> $DIR/disallowed_macros.rs:34:5 + --> $DIR/disallowed_macros.rs:37:5 | LL | macros::item!(); | ^^^^^^^^^^^^^^^ error: use of a disallowed macro `macros::item` - --> $DIR/disallowed_macros.rs:38:5 + --> $DIR/disallowed_macros.rs:41:5 | LL | macros::item!(); | ^^^^^^^^^^^^^^^ -error: aborting due to 13 previous errors +error: aborting due to 15 previous errors diff --git a/tests/ui-toml/excessive_nesting/auxiliary/proc_macros.rs b/tests/ui-toml/excessive_nesting/auxiliary/proc_macros.rs deleted file mode 100644 index 60fbaaea3..000000000 --- a/tests/ui-toml/excessive_nesting/auxiliary/proc_macros.rs +++ /dev/null @@ -1,469 +0,0 @@ -// NOTE: Copied from `ui/auxiliary/proc_macros.rs`, couldn't get `../` to work for some reason - -#![feature(let_chains)] -#![feature(proc_macro_span)] -#![allow(clippy::excessive_nesting, dead_code)] - -extern crate proc_macro; - -use core::mem; -use proc_macro::token_stream::IntoIter; -use proc_macro::Delimiter::{self, Brace, Parenthesis}; -use proc_macro::Spacing::{self, Alone, Joint}; -use proc_macro::{Group, Ident, Literal, Punct, Span, TokenStream, TokenTree as TT}; - -type Result = core::result::Result; - -/// Make a `compile_error!` pointing to the given span. -fn make_error(msg: &str, span: Span) -> TokenStream { - TokenStream::from_iter([ - TT::Ident(Ident::new("compile_error", span)), - TT::Punct(punct_with_span('!', Alone, span)), - TT::Group({ - let mut msg = Literal::string(msg); - msg.set_span(span); - group_with_span(Parenthesis, TokenStream::from_iter([TT::Literal(msg)]), span) - }), - ]) -} - -fn expect_tt(tt: Option, f: impl FnOnce(TT) -> Option, expected: &str, span: Span) -> Result { - match tt { - None => Err(make_error( - &format!("unexpected end of input, expected {expected}"), - span, - )), - Some(tt) => { - let span = tt.span(); - match f(tt) { - Some(x) => Ok(x), - None => Err(make_error(&format!("unexpected token, expected {expected}"), span)), - } - }, - } -} - -fn punct_with_span(c: char, spacing: Spacing, span: Span) -> Punct { - let mut p = Punct::new(c, spacing); - p.set_span(span); - p -} - -fn group_with_span(delimiter: Delimiter, stream: TokenStream, span: Span) -> Group { - let mut g = Group::new(delimiter, stream); - g.set_span(span); - g -} - -/// Token used to escape the following token from the macro's span rules. -const ESCAPE_CHAR: char = '$'; - -/// Takes a single token followed by a sequence of tokens. Returns the sequence of tokens with their -/// span set to that of the first token. Tokens may be escaped with either `#ident` or `#(tokens)`. -#[proc_macro] -pub fn with_span(input: TokenStream) -> TokenStream { - let mut iter = input.into_iter(); - let span = iter.next().unwrap().span(); - let mut res = TokenStream::new(); - if let Err(e) = write_with_span(span, iter, &mut res) { - e - } else { - res - } -} - -/// Takes a sequence of tokens and return the tokens with the span set such that they appear to be -/// from an external macro. Tokens may be escaped with either `#ident` or `#(tokens)`. -#[proc_macro] -pub fn external(input: TokenStream) -> TokenStream { - let mut res = TokenStream::new(); - if let Err(e) = write_with_span(Span::mixed_site(), input.into_iter(), &mut res) { - e - } else { - res - } -} - -/// Copies all the tokens, replacing all their spans with the given span. Tokens can be escaped -/// either by `#ident` or `#(tokens)`. -fn write_with_span(s: Span, mut input: IntoIter, out: &mut TokenStream) -> Result<()> { - while let Some(tt) = input.next() { - match tt { - TT::Punct(p) if p.as_char() == ESCAPE_CHAR => { - expect_tt( - input.next(), - |tt| match tt { - tt @ (TT::Ident(_) | TT::Literal(_)) => { - out.extend([tt]); - Some(()) - }, - TT::Punct(mut p) if p.as_char() == ESCAPE_CHAR => { - p.set_span(s); - out.extend([TT::Punct(p)]); - Some(()) - }, - TT::Group(g) if g.delimiter() == Parenthesis => { - out.extend([TT::Group(group_with_span(Delimiter::None, g.stream(), g.span()))]); - Some(()) - }, - _ => None, - }, - "an ident, a literal, or parenthesized tokens", - p.span(), - )?; - }, - TT::Group(g) => { - let mut stream = TokenStream::new(); - write_with_span(s, g.stream().into_iter(), &mut stream)?; - out.extend([TT::Group(group_with_span(g.delimiter(), stream, s))]); - }, - mut tt => { - tt.set_span(s); - out.extend([tt]); - }, - } - } - Ok(()) -} - -/// Within the item this attribute is attached to, an `inline!` macro is available which expands the -/// contained tokens as though they came from a macro expansion. -/// -/// Within the `inline!` macro, any token preceded by `$` is passed as though it were an argument -/// with an automatically chosen fragment specifier. `$ident` will be passed as `ident`, `$1` or -/// `$"literal"` will be passed as `literal`, `$'lt` will be passed as `lifetime`, and `$(...)` will -/// pass the contained tokens as a `tt` sequence (the wrapping parenthesis are removed). If another -/// specifier is required it can be specified within parenthesis like `$(@expr ...)`. This will -/// expand the remaining tokens as a single argument. -/// -/// Multiple `inline!` macros may be nested within each other. This will expand as nested macro -/// calls. However, any arguments will be passed as though they came from the outermost context. -#[proc_macro_attribute] -pub fn inline_macros(args: TokenStream, input: TokenStream) -> TokenStream { - let mut args = args.into_iter(); - let mac_name = match args.next() { - Some(TT::Ident(name)) => Some(name), - Some(tt) => { - return make_error( - "unexpected argument, expected either an ident or no arguments", - tt.span(), - ); - }, - None => None, - }; - if let Some(tt) = args.next() { - return make_error( - "unexpected argument, expected either an ident or no arguments", - tt.span(), - ); - }; - - let mac_name = if let Some(mac_name) = mac_name { - Ident::new(&format!("__inline_mac_{mac_name}"), Span::call_site()) - } else { - let mut input = match LookaheadIter::new(input.clone().into_iter()) { - Some(x) => x, - None => return input, - }; - loop { - match input.next() { - None => break Ident::new("__inline_mac", Span::call_site()), - Some(TT::Ident(kind)) => match &*kind.to_string() { - "impl" => break Ident::new("__inline_mac_impl", Span::call_site()), - kind @ ("struct" | "enum" | "union" | "fn" | "mod" | "trait" | "type" | "const" | "static") => { - if let TT::Ident(name) = &input.tt { - break Ident::new(&format!("__inline_mac_{kind}_{name}"), Span::call_site()); - } else { - break Ident::new(&format!("__inline_mac_{kind}"), Span::call_site()); - } - }, - _ => {}, - }, - _ => {}, - } - } - }; - - let mut expander = Expander::default(); - let mut mac = MacWriter::new(mac_name); - if let Err(e) = expander.expand(input.into_iter(), &mut mac) { - return e; - } - let mut out = TokenStream::new(); - mac.finish(&mut out); - out.extend(expander.expn); - out -} - -/// Wraps a `TokenStream` iterator with a single token lookahead. -struct LookaheadIter { - tt: TT, - iter: IntoIter, -} -impl LookaheadIter { - fn new(mut iter: IntoIter) -> Option { - iter.next().map(|tt| Self { tt, iter }) - } - - /// Get's the lookahead token, replacing it with the next token in the stream. - /// Note: If there isn't a next token, this will not return the lookahead token. - fn next(&mut self) -> Option { - self.iter.next().map(|tt| mem::replace(&mut self.tt, tt)) - } -} - -/// Builds the macro used to implement all the `inline!` macro calls. -struct MacWriter { - name: Ident, - macros: TokenStream, - next_idx: usize, -} -impl MacWriter { - fn new(name: Ident) -> Self { - Self { - name, - macros: TokenStream::new(), - next_idx: 0, - } - } - - /// Inserts a new `inline!` call. - fn insert(&mut self, name_span: Span, bang_span: Span, body: Group, expander: &mut Expander) -> Result<()> { - let idx = self.next_idx; - self.next_idx += 1; - - let mut inner = Expander::for_arm(idx); - inner.expand(body.stream().into_iter(), self)?; - let new_arm = inner.arm.unwrap(); - - self.macros.extend([ - TT::Group(Group::new(Parenthesis, new_arm.args_def)), - TT::Punct(Punct::new('=', Joint)), - TT::Punct(Punct::new('>', Alone)), - TT::Group(Group::new(Parenthesis, inner.expn)), - TT::Punct(Punct::new(';', Alone)), - ]); - - expander.expn.extend([ - TT::Ident({ - let mut name = self.name.clone(); - name.set_span(name_span); - name - }), - TT::Punct(punct_with_span('!', Alone, bang_span)), - ]); - let mut call_body = TokenStream::from_iter([TT::Literal(Literal::usize_unsuffixed(idx))]); - if let Some(arm) = expander.arm.as_mut() { - if !new_arm.args.is_empty() { - arm.add_sub_args(new_arm.args, &mut call_body); - } - } else { - call_body.extend(new_arm.args); - } - let mut g = Group::new(body.delimiter(), call_body); - g.set_span(body.span()); - expander.expn.extend([TT::Group(g)]); - Ok(()) - } - - /// Creates the macro definition. - fn finish(self, out: &mut TokenStream) { - if self.next_idx != 0 { - out.extend([ - TT::Ident(Ident::new("macro_rules", Span::call_site())), - TT::Punct(Punct::new('!', Alone)), - TT::Ident(self.name), - TT::Group(Group::new(Brace, self.macros)), - ]) - } - } -} - -struct MacroArm { - args_def: TokenStream, - args: Vec, -} -impl MacroArm { - fn add_single_arg_def(&mut self, kind: &str, dollar_span: Span, arg_span: Span, out: &mut TokenStream) { - let mut name = Ident::new(&format!("_{}", self.args.len()), Span::call_site()); - self.args_def.extend([ - TT::Punct(Punct::new('$', Alone)), - TT::Ident(name.clone()), - TT::Punct(Punct::new(':', Alone)), - TT::Ident(Ident::new(kind, Span::call_site())), - ]); - name.set_span(arg_span); - out.extend([TT::Punct(punct_with_span('$', Alone, dollar_span)), TT::Ident(name)]); - } - - fn add_parenthesized_arg_def(&mut self, kind: Ident, dollar_span: Span, arg_span: Span, out: &mut TokenStream) { - let mut name = Ident::new(&format!("_{}", self.args.len()), Span::call_site()); - self.args_def.extend([TT::Group(Group::new( - Parenthesis, - TokenStream::from_iter([ - TT::Punct(Punct::new('$', Alone)), - TT::Ident(name.clone()), - TT::Punct(Punct::new(':', Alone)), - TT::Ident(kind), - ]), - ))]); - name.set_span(arg_span); - out.extend([TT::Punct(punct_with_span('$', Alone, dollar_span)), TT::Ident(name)]); - } - - fn add_multi_arg_def(&mut self, dollar_span: Span, arg_span: Span, out: &mut TokenStream) { - let mut name = Ident::new(&format!("_{}", self.args.len()), Span::call_site()); - self.args_def.extend([TT::Group(Group::new( - Parenthesis, - TokenStream::from_iter([ - TT::Punct(Punct::new('$', Alone)), - TT::Group(Group::new( - Parenthesis, - TokenStream::from_iter([ - TT::Punct(Punct::new('$', Alone)), - TT::Ident(name.clone()), - TT::Punct(Punct::new(':', Alone)), - TT::Ident(Ident::new("tt", Span::call_site())), - ]), - )), - TT::Punct(Punct::new('*', Alone)), - ]), - ))]); - name.set_span(arg_span); - out.extend([ - TT::Punct(punct_with_span('$', Alone, dollar_span)), - TT::Group(group_with_span( - Parenthesis, - TokenStream::from_iter([TT::Punct(punct_with_span('$', Alone, dollar_span)), TT::Ident(name)]), - dollar_span, - )), - TT::Punct(punct_with_span('*', Alone, dollar_span)), - ]); - } - - fn add_arg(&mut self, dollar_span: Span, tt: TT, input: &mut IntoIter, out: &mut TokenStream) -> Result<()> { - match tt { - TT::Punct(p) if p.as_char() == ESCAPE_CHAR => out.extend([TT::Punct(p)]), - TT::Punct(p) if p.as_char() == '\'' && p.spacing() == Joint => { - let lt_name = expect_tt( - input.next(), - |tt| match tt { - TT::Ident(x) => Some(x), - _ => None, - }, - "lifetime name", - p.span(), - )?; - let arg_span = p.span().join(lt_name.span()).unwrap_or(p.span()); - self.add_single_arg_def("lifetime", dollar_span, arg_span, out); - self.args.extend([TT::Punct(p), TT::Ident(lt_name)]); - }, - TT::Ident(x) => { - self.add_single_arg_def("ident", dollar_span, x.span(), out); - self.args.push(TT::Ident(x)); - }, - TT::Literal(x) => { - self.add_single_arg_def("literal", dollar_span, x.span(), out); - self.args.push(TT::Literal(x)); - }, - TT::Group(g) if g.delimiter() == Parenthesis => { - let mut inner = g.stream().into_iter(); - if let Some(TT::Punct(p)) = inner.next() - && p.as_char() == '@' - { - let kind = expect_tt( - inner.next(), - |tt| match tt { - TT::Ident(kind) => Some(kind), - _ => None, - }, - "a macro fragment specifier", - p.span(), - )?; - self.add_parenthesized_arg_def(kind, dollar_span, g.span(), out); - self.args.push(TT::Group(group_with_span(Parenthesis, inner.collect(), g.span()))) - } else { - self.add_multi_arg_def(dollar_span, g.span(), out); - self.args.push(TT::Group(g)); - } - }, - tt => return Err(make_error("unsupported escape", tt.span())), - }; - Ok(()) - } - - fn add_sub_args(&mut self, args: Vec, out: &mut TokenStream) { - self.add_multi_arg_def(Span::call_site(), Span::call_site(), out); - self.args - .extend([TT::Group(Group::new(Parenthesis, TokenStream::from_iter(args)))]); - } -} - -#[derive(Default)] -struct Expander { - arm: Option, - expn: TokenStream, -} -impl Expander { - fn for_arm(idx: usize) -> Self { - Self { - arm: Some(MacroArm { - args_def: TokenStream::from_iter([TT::Literal(Literal::usize_unsuffixed(idx))]), - args: Vec::new(), - }), - expn: TokenStream::new(), - } - } - - fn write_tt(&mut self, tt: TT, mac: &mut MacWriter) -> Result<()> { - match tt { - TT::Group(g) => { - let outer = mem::take(&mut self.expn); - self.expand(g.stream().into_iter(), mac)?; - let inner = mem::replace(&mut self.expn, outer); - self.expn - .extend([TT::Group(group_with_span(g.delimiter(), inner, g.span()))]); - }, - tt => self.expn.extend([tt]), - } - Ok(()) - } - - fn expand(&mut self, input: IntoIter, mac: &mut MacWriter) -> Result<()> { - let Some(mut input) = LookaheadIter::new(input) else { - return Ok(()); - }; - while let Some(tt) = input.next() { - if let TT::Punct(p) = &tt - && p.as_char() == ESCAPE_CHAR - && let Some(arm) = self.arm.as_mut() - { - arm.add_arg(p.span(), mem::replace(&mut input.tt, tt), &mut input.iter, &mut self.expn)?; - if input.next().is_none() { - return Ok(()); - } - } else if let TT::Punct(p) = &input.tt - && p.as_char() == '!' - && let TT::Ident(name) = &tt - && name.to_string() == "inline" - { - let g = expect_tt( - input.iter.next(), - |tt| match tt { - TT::Group(g) => Some(g), - _ => None, - }, - "macro arguments", - p.span(), - )?; - mac.insert(name.span(), p.span(), g, self)?; - if input.next().is_none() { - return Ok(()); - } - } else { - self.write_tt(tt, mac)?; - } - } - self.write_tt(input.tt, mac) - } -} diff --git a/tests/ui-toml/excessive_nesting/excessive_nesting.rs b/tests/ui-toml/excessive_nesting/excessive_nesting.rs index 25f0d0d62..d737a832d 100644 --- a/tests/ui-toml/excessive_nesting/excessive_nesting.rs +++ b/tests/ui-toml/excessive_nesting/excessive_nesting.rs @@ -1,4 +1,4 @@ -//@aux-build:proc_macros.rs +//@aux-build:../../ui/auxiliary/proc_macros.rs #![rustfmt::skip] #![feature(custom_inner_attributes)] #![allow(unused)] @@ -156,7 +156,7 @@ fn main() { for i in {{{{xx}}}} {{{{{{{{}}}}}}}} while let Some(i) = {{{{{{Some(1)}}}}}} {{{{{{{}}}}}}} - + while {{{{{{{{true}}}}}}}} {{{{{{{{{}}}}}}}}} let d = D { d: {{{{{{{{{{{{{{{{{{{{{{{3}}}}}}}}}}}}}}}}}}}}}}} }; diff --git a/tests/ui-toml/toml_unknown_key/conf_unknown_key.stderr b/tests/ui-toml/toml_unknown_key/conf_unknown_key.stderr index cdabe6460..b97bb1444 100644 --- a/tests/ui-toml/toml_unknown_key/conf_unknown_key.stderr +++ b/tests/ui-toml/toml_unknown_key/conf_unknown_key.stderr @@ -28,6 +28,7 @@ error: error reading Clippy's configuration file: unknown field `foobar`, expect disallowed-types doc-valid-idents enable-raw-pointer-heuristic-for-send + enforce-iter-loop-reborrow enforced-import-renames enum-variant-name-threshold enum-variant-size-threshold @@ -99,6 +100,7 @@ error: error reading Clippy's configuration file: unknown field `barfoo`, expect disallowed-types doc-valid-idents enable-raw-pointer-heuristic-for-send + enforce-iter-loop-reborrow enforced-import-renames enum-variant-name-threshold enum-variant-size-threshold diff --git a/tests/ui-toml/undocumented_unsafe_blocks/auxiliary/proc_macro_unsafe.rs b/tests/ui-toml/undocumented_unsafe_blocks/auxiliary/proc_macro_unsafe.rs deleted file mode 100644 index 1c591fc76..000000000 --- a/tests/ui-toml/undocumented_unsafe_blocks/auxiliary/proc_macro_unsafe.rs +++ /dev/null @@ -1,13 +0,0 @@ -extern crate proc_macro; - -use proc_macro::{Delimiter, Group, Ident, TokenStream, TokenTree}; - -#[proc_macro] -pub fn unsafe_block(input: TokenStream) -> TokenStream { - let span = input.into_iter().next().unwrap().span(); - TokenStream::from_iter([TokenTree::Ident(Ident::new("unsafe", span)), { - let mut group = Group::new(Delimiter::Brace, TokenStream::new()); - group.set_span(span); - TokenTree::Group(group) - }]) -} diff --git a/tests/ui-toml/undocumented_unsafe_blocks/undocumented_unsafe_blocks.rs b/tests/ui-toml/undocumented_unsafe_blocks/undocumented_unsafe_blocks.rs index c0976f0d6..b28e1b7d1 100644 --- a/tests/ui-toml/undocumented_unsafe_blocks/undocumented_unsafe_blocks.rs +++ b/tests/ui-toml/undocumented_unsafe_blocks/undocumented_unsafe_blocks.rs @@ -1,4 +1,4 @@ -//@aux-build:proc_macro_unsafe.rs +//@aux-build:../../ui/auxiliary/proc_macro_unsafe.rs #![warn(clippy::undocumented_unsafe_blocks, clippy::unnecessary_safety_comment)] #![allow(deref_nullptr, clippy::let_unit_value, clippy::missing_safety_doc)] @@ -564,4 +564,18 @@ fn issue_8679() { unsafe {} } +mod issue_11246 { + // Safety: foo + const _: () = unsafe {}; + + // Safety: A safety comment + const FOO: () = unsafe {}; + + // Safety: bar + static BAR: u8 = unsafe { 0 }; +} + +// Safety: Another safety comment +const FOO: () = unsafe {}; + fn main() {} diff --git a/tests/ui/bool_comparison.fixed b/tests/ui/bool_comparison.fixed index db85247f4..e3f2ca72d 100644 --- a/tests/ui/bool_comparison.fixed +++ b/tests/ui/bool_comparison.fixed @@ -1,6 +1,6 @@ #![allow(clippy::needless_if)] #![warn(clippy::bool_comparison)] -#![allow(clippy::incorrect_partial_ord_impl_on_ord_type)] +#![allow(clippy::non_canonical_partial_ord_impl)] fn main() { let x = true; diff --git a/tests/ui/bool_comparison.rs b/tests/ui/bool_comparison.rs index 0915f8854..d1bc20d68 100644 --- a/tests/ui/bool_comparison.rs +++ b/tests/ui/bool_comparison.rs @@ -1,6 +1,6 @@ #![allow(clippy::needless_if)] #![warn(clippy::bool_comparison)] -#![allow(clippy::incorrect_partial_ord_impl_on_ord_type)] +#![allow(clippy::non_canonical_partial_ord_impl)] fn main() { let x = true; diff --git a/tests/ui/cast_size_32bit.stderr b/tests/ui/cast_size.32bit.stderr similarity index 78% rename from tests/ui/cast_size_32bit.stderr rename to tests/ui/cast_size.32bit.stderr index fb51783a4..379ca6086 100644 --- a/tests/ui/cast_size_32bit.stderr +++ b/tests/ui/cast_size.32bit.stderr @@ -1,44 +1,46 @@ error: casting `isize` to `i8` may truncate the value - --> $DIR/cast_size_32bit.rs:12:5 + --> $DIR/cast_size.rs:15:5 | LL | 1isize as i8; | ^^^^^^^^^^^^ | = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ... = note: `-D clippy::cast-possible-truncation` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::cast_possible_truncation)]` help: ... or use `try_from` and handle the error accordingly | LL | i8::try_from(1isize); | ~~~~~~~~~~~~~~~~~~~~ error: casting `isize` to `f64` causes a loss of precision on targets with 64-bit wide pointers (`isize` is 64 bits wide, but `f64`'s mantissa is only 52 bits wide) - --> $DIR/cast_size_32bit.rs:15:5 + --> $DIR/cast_size.rs:18:5 | LL | x0 as f64; | ^^^^^^^^^ | = note: `-D clippy::cast-precision-loss` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::cast_precision_loss)]` error: casting `usize` to `f64` causes a loss of precision on targets with 64-bit wide pointers (`usize` is 64 bits wide, but `f64`'s mantissa is only 52 bits wide) - --> $DIR/cast_size_32bit.rs:16:5 + --> $DIR/cast_size.rs:19:5 | LL | x1 as f64; | ^^^^^^^^^ error: casting `isize` to `f32` causes a loss of precision (`isize` is 32 or 64 bits wide, but `f32`'s mantissa is only 23 bits wide) - --> $DIR/cast_size_32bit.rs:17:5 + --> $DIR/cast_size.rs:20:5 | LL | x0 as f32; | ^^^^^^^^^ error: casting `usize` to `f32` causes a loss of precision (`usize` is 32 or 64 bits wide, but `f32`'s mantissa is only 23 bits wide) - --> $DIR/cast_size_32bit.rs:18:5 + --> $DIR/cast_size.rs:21:5 | LL | x1 as f32; | ^^^^^^^^^ error: casting `isize` to `i32` may truncate the value on targets with 64-bit wide pointers - --> $DIR/cast_size_32bit.rs:19:5 + --> $DIR/cast_size.rs:22:5 | LL | 1isize as i32; | ^^^^^^^^^^^^^ @@ -50,7 +52,7 @@ LL | i32::try_from(1isize); | ~~~~~~~~~~~~~~~~~~~~~ error: casting `isize` to `u32` may truncate the value on targets with 64-bit wide pointers - --> $DIR/cast_size_32bit.rs:20:5 + --> $DIR/cast_size.rs:23:5 | LL | 1isize as u32; | ^^^^^^^^^^^^^ @@ -62,7 +64,7 @@ LL | u32::try_from(1isize); | ~~~~~~~~~~~~~~~~~~~~~ error: casting `usize` to `u32` may truncate the value on targets with 64-bit wide pointers - --> $DIR/cast_size_32bit.rs:21:5 + --> $DIR/cast_size.rs:24:5 | LL | 1usize as u32; | ^^^^^^^^^^^^^ @@ -74,7 +76,7 @@ LL | u32::try_from(1usize); | ~~~~~~~~~~~~~~~~~~~~~ error: casting `usize` to `i32` may truncate the value on targets with 64-bit wide pointers - --> $DIR/cast_size_32bit.rs:22:5 + --> $DIR/cast_size.rs:25:5 | LL | 1usize as i32; | ^^^^^^^^^^^^^ @@ -86,15 +88,16 @@ LL | i32::try_from(1usize); | ~~~~~~~~~~~~~~~~~~~~~ error: casting `usize` to `i32` may wrap around the value on targets with 32-bit wide pointers - --> $DIR/cast_size_32bit.rs:22:5 + --> $DIR/cast_size.rs:25:5 | LL | 1usize as i32; | ^^^^^^^^^^^^^ | = note: `-D clippy::cast-possible-wrap` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::cast_possible_wrap)]` error: casting `i64` to `isize` may truncate the value on targets with 32-bit wide pointers - --> $DIR/cast_size_32bit.rs:24:5 + --> $DIR/cast_size.rs:26:5 | LL | 1i64 as isize; | ^^^^^^^^^^^^^ @@ -106,7 +109,7 @@ LL | isize::try_from(1i64); | ~~~~~~~~~~~~~~~~~~~~~ error: casting `i64` to `usize` may truncate the value on targets with 32-bit wide pointers - --> $DIR/cast_size_32bit.rs:25:5 + --> $DIR/cast_size.rs:27:5 | LL | 1i64 as usize; | ^^^^^^^^^^^^^ @@ -118,7 +121,7 @@ LL | usize::try_from(1i64); | ~~~~~~~~~~~~~~~~~~~~~ error: casting `u64` to `isize` may truncate the value on targets with 32-bit wide pointers - --> $DIR/cast_size_32bit.rs:26:5 + --> $DIR/cast_size.rs:28:5 | LL | 1u64 as isize; | ^^^^^^^^^^^^^ @@ -130,13 +133,13 @@ LL | isize::try_from(1u64); | ~~~~~~~~~~~~~~~~~~~~~ error: casting `u64` to `isize` may wrap around the value on targets with 64-bit wide pointers - --> $DIR/cast_size_32bit.rs:26:5 + --> $DIR/cast_size.rs:28:5 | LL | 1u64 as isize; | ^^^^^^^^^^^^^ error: casting `u64` to `usize` may truncate the value on targets with 32-bit wide pointers - --> $DIR/cast_size_32bit.rs:27:5 + --> $DIR/cast_size.rs:29:5 | LL | 1u64 as usize; | ^^^^^^^^^^^^^ @@ -148,24 +151,31 @@ LL | usize::try_from(1u64); | ~~~~~~~~~~~~~~~~~~~~~ error: casting `u32` to `isize` may wrap around the value on targets with 32-bit wide pointers - --> $DIR/cast_size_32bit.rs:28:5 + --> $DIR/cast_size.rs:30:5 | LL | 1u32 as isize; | ^^^^^^^^^^^^^ error: casting `i32` to `f32` causes a loss of precision (`i32` is 32 bits wide, but `f32`'s mantissa is only 23 bits wide) - --> $DIR/cast_size_32bit.rs:33:5 + --> $DIR/cast_size.rs:35:5 | LL | 999_999_999 as f32; | ^^^^^^^^^^^^^^^^^^ -error: casting integer literal to `f64` is unnecessary - --> $DIR/cast_size_32bit.rs:34:5 +error: casting `usize` to `f64` causes a loss of precision on targets with 64-bit wide pointers (`usize` is 64 bits wide, but `f64`'s mantissa is only 52 bits wide) + --> $DIR/cast_size.rs:36:5 | -LL | 3_999_999_999usize as f64; - | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `3_999_999_999_f64` +LL | 9_999_999_999_999_999usize as f64; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: literal out of range for `usize` + --> $DIR/cast_size.rs:36:5 | - = note: `-D clippy::unnecessary-cast` implied by `-D warnings` +LL | 9_999_999_999_999_999usize as f64; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: the literal `9_999_999_999_999_999usize` does not fit into the type `usize` whose range is `0..=4294967295` + = note: `#[deny(overflowing_literals)]` on by default -error: aborting due to 18 previous errors +error: aborting due to 19 previous errors diff --git a/tests/ui/cast_size.stderr b/tests/ui/cast_size.64bit.stderr similarity index 94% rename from tests/ui/cast_size.stderr rename to tests/ui/cast_size.64bit.stderr index bc9224be6..7fae92b12 100644 --- a/tests/ui/cast_size.stderr +++ b/tests/ui/cast_size.64bit.stderr @@ -1,5 +1,5 @@ error: casting `isize` to `i8` may truncate the value - --> $DIR/cast_size.rs:12:5 + --> $DIR/cast_size.rs:15:5 | LL | 1isize as i8; | ^^^^^^^^^^^^ @@ -13,7 +13,7 @@ LL | i8::try_from(1isize); | ~~~~~~~~~~~~~~~~~~~~ error: casting `isize` to `f64` causes a loss of precision on targets with 64-bit wide pointers (`isize` is 64 bits wide, but `f64`'s mantissa is only 52 bits wide) - --> $DIR/cast_size.rs:16:5 + --> $DIR/cast_size.rs:18:5 | LL | x0 as f64; | ^^^^^^^^^ @@ -28,19 +28,19 @@ LL | x1 as f64; | ^^^^^^^^^ error: casting `isize` to `f32` causes a loss of precision (`isize` is 32 or 64 bits wide, but `f32`'s mantissa is only 23 bits wide) - --> $DIR/cast_size.rs:21:5 + --> $DIR/cast_size.rs:20:5 | LL | x0 as f32; | ^^^^^^^^^ error: casting `usize` to `f32` causes a loss of precision (`usize` is 32 or 64 bits wide, but `f32`'s mantissa is only 23 bits wide) - --> $DIR/cast_size.rs:23:5 + --> $DIR/cast_size.rs:21:5 | LL | x1 as f32; | ^^^^^^^^^ error: casting `isize` to `i32` may truncate the value on targets with 64-bit wide pointers - --> $DIR/cast_size.rs:25:5 + --> $DIR/cast_size.rs:22:5 | LL | 1isize as i32; | ^^^^^^^^^^^^^ @@ -52,7 +52,7 @@ LL | i32::try_from(1isize); | ~~~~~~~~~~~~~~~~~~~~~ error: casting `isize` to `u32` may truncate the value on targets with 64-bit wide pointers - --> $DIR/cast_size.rs:27:5 + --> $DIR/cast_size.rs:23:5 | LL | 1isize as u32; | ^^^^^^^^^^^^^ @@ -64,7 +64,7 @@ LL | u32::try_from(1isize); | ~~~~~~~~~~~~~~~~~~~~~ error: casting `usize` to `u32` may truncate the value on targets with 64-bit wide pointers - --> $DIR/cast_size.rs:29:5 + --> $DIR/cast_size.rs:24:5 | LL | 1usize as u32; | ^^^^^^^^^^^^^ @@ -76,7 +76,7 @@ LL | u32::try_from(1usize); | ~~~~~~~~~~~~~~~~~~~~~ error: casting `usize` to `i32` may truncate the value on targets with 64-bit wide pointers - --> $DIR/cast_size.rs:31:5 + --> $DIR/cast_size.rs:25:5 | LL | 1usize as i32; | ^^^^^^^^^^^^^ @@ -88,7 +88,7 @@ LL | i32::try_from(1usize); | ~~~~~~~~~~~~~~~~~~~~~ error: casting `usize` to `i32` may wrap around the value on targets with 32-bit wide pointers - --> $DIR/cast_size.rs:31:5 + --> $DIR/cast_size.rs:25:5 | LL | 1usize as i32; | ^^^^^^^^^^^^^ @@ -97,7 +97,7 @@ LL | 1usize as i32; = help: to override `-D warnings` add `#[allow(clippy::cast_possible_wrap)]` error: casting `i64` to `isize` may truncate the value on targets with 32-bit wide pointers - --> $DIR/cast_size.rs:36:5 + --> $DIR/cast_size.rs:26:5 | LL | 1i64 as isize; | ^^^^^^^^^^^^^ @@ -109,7 +109,7 @@ LL | isize::try_from(1i64); | ~~~~~~~~~~~~~~~~~~~~~ error: casting `i64` to `usize` may truncate the value on targets with 32-bit wide pointers - --> $DIR/cast_size.rs:38:5 + --> $DIR/cast_size.rs:27:5 | LL | 1i64 as usize; | ^^^^^^^^^^^^^ @@ -121,7 +121,7 @@ LL | usize::try_from(1i64); | ~~~~~~~~~~~~~~~~~~~~~ error: casting `u64` to `isize` may truncate the value on targets with 32-bit wide pointers - --> $DIR/cast_size.rs:40:5 + --> $DIR/cast_size.rs:28:5 | LL | 1u64 as isize; | ^^^^^^^^^^^^^ @@ -133,13 +133,13 @@ LL | isize::try_from(1u64); | ~~~~~~~~~~~~~~~~~~~~~ error: casting `u64` to `isize` may wrap around the value on targets with 64-bit wide pointers - --> $DIR/cast_size.rs:40:5 + --> $DIR/cast_size.rs:28:5 | LL | 1u64 as isize; | ^^^^^^^^^^^^^ error: casting `u64` to `usize` may truncate the value on targets with 32-bit wide pointers - --> $DIR/cast_size.rs:43:5 + --> $DIR/cast_size.rs:29:5 | LL | 1u64 as usize; | ^^^^^^^^^^^^^ @@ -151,19 +151,19 @@ LL | usize::try_from(1u64); | ~~~~~~~~~~~~~~~~~~~~~ error: casting `u32` to `isize` may wrap around the value on targets with 32-bit wide pointers - --> $DIR/cast_size.rs:45:5 + --> $DIR/cast_size.rs:30:5 | LL | 1u32 as isize; | ^^^^^^^^^^^^^ error: casting `i32` to `f32` causes a loss of precision (`i32` is 32 bits wide, but `f32`'s mantissa is only 23 bits wide) - --> $DIR/cast_size.rs:51:5 + --> $DIR/cast_size.rs:35:5 | LL | 999_999_999 as f32; | ^^^^^^^^^^^^^^^^^^ error: casting `usize` to `f64` causes a loss of precision on targets with 64-bit wide pointers (`usize` is 64 bits wide, but `f64`'s mantissa is only 52 bits wide) - --> $DIR/cast_size.rs:53:5 + --> $DIR/cast_size.rs:36:5 | LL | 9_999_999_999_999_999usize as f64; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/cast_size.rs b/tests/ui/cast_size.rs index 95626b20b..d063a70cc 100644 --- a/tests/ui/cast_size.rs +++ b/tests/ui/cast_size.rs @@ -1,56 +1,37 @@ -//@ignore-32bit -#[warn( +//@stderr-per-bitwidth +//@no-rustfix + +#![warn( clippy::cast_precision_loss, clippy::cast_possible_truncation, clippy::cast_sign_loss, clippy::cast_possible_wrap, clippy::cast_lossless )] -#[allow(clippy::no_effect, clippy::unnecessary_operation)] +#![allow(clippy::no_effect, clippy::unnecessary_operation)] + fn main() { // Casting from *size 1isize as i8; - //~^ ERROR: casting `isize` to `i8` may truncate the value let x0 = 1isize; let x1 = 1usize; x0 as f64; - //~^ ERROR: casting `isize` to `f64` causes a loss of precision on targets with 64-bit - //~| NOTE: `-D clippy::cast-precision-loss` implied by `-D warnings` x1 as f64; - //~^ ERROR: casting `usize` to `f64` causes a loss of precision on targets with 64-bit x0 as f32; - //~^ ERROR: casting `isize` to `f32` causes a loss of precision (`isize` is 32 or 64 b x1 as f32; - //~^ ERROR: casting `usize` to `f32` causes a loss of precision (`usize` is 32 or 64 b 1isize as i32; - //~^ ERROR: casting `isize` to `i32` may truncate the value on targets with 64-bit wid 1isize as u32; - //~^ ERROR: casting `isize` to `u32` may truncate the value on targets with 64-bit wid 1usize as u32; - //~^ ERROR: casting `usize` to `u32` may truncate the value on targets with 64-bit wid 1usize as i32; - //~^ ERROR: casting `usize` to `i32` may truncate the value on targets with 64-bit wid - //~| ERROR: casting `usize` to `i32` may wrap around the value on targets with 32-bit - //~| NOTE: `-D clippy::cast-possible-wrap` implied by `-D warnings` - // Casting to *size 1i64 as isize; - //~^ ERROR: casting `i64` to `isize` may truncate the value on targets with 32-bit wid 1i64 as usize; - //~^ ERROR: casting `i64` to `usize` may truncate the value on targets with 32-bit wid 1u64 as isize; - //~^ ERROR: casting `u64` to `isize` may truncate the value on targets with 32-bit wid - //~| ERROR: casting `u64` to `isize` may wrap around the value on targets with 64-bit 1u64 as usize; - //~^ ERROR: casting `u64` to `usize` may truncate the value on targets with 32-bit wid 1u32 as isize; - //~^ ERROR: casting `u32` to `isize` may wrap around the value on targets with 32-bit 1u32 as usize; // Should not trigger any lint 1i32 as isize; // Neither should this 1i32 as usize; // Big integer literal to float 999_999_999 as f32; - //~^ ERROR: casting `i32` to `f32` causes a loss of precision (`i32` is 32 bits wide, 9_999_999_999_999_999usize as f64; - //~^ ERROR: casting `usize` to `f64` causes a loss of precision on targets with 64-bit } -//@no-rustfix diff --git a/tests/ui/cast_size_32bit.rs b/tests/ui/cast_size_32bit.rs deleted file mode 100644 index 5a06e34bd..000000000 --- a/tests/ui/cast_size_32bit.rs +++ /dev/null @@ -1,56 +0,0 @@ -//@ignore-64bit -#[warn( - clippy::cast_precision_loss, - clippy::cast_possible_truncation, - clippy::cast_sign_loss, - clippy::cast_possible_wrap, - clippy::cast_lossless -)] -#[allow(clippy::no_effect, clippy::unnecessary_operation)] -fn main() { - // Casting from *size - 1isize as i8; - //~^ ERROR: casting `isize` to `i8` may truncate the value - let x0 = 1isize; - let x1 = 1usize; - x0 as f64; - //~^ ERROR: casting `isize` to `f64` causes a loss of precision on targets with 64-bit - //~| NOTE: `-D clippy::cast-precision-loss` implied by `-D warnings` - x1 as f64; - //~^ ERROR: casting `usize` to `f64` causes a loss of precision on targets with 64-bit - x0 as f32; - //~^ ERROR: casting `isize` to `f32` causes a loss of precision (`isize` is 32 or 64 b - x1 as f32; - //~^ ERROR: casting `usize` to `f32` causes a loss of precision (`usize` is 32 or 64 b - 1isize as i32; - //~^ ERROR: casting `isize` to `i32` may truncate the value on targets with 64-bit wid - 1isize as u32; - //~^ ERROR: casting `isize` to `u32` may truncate the value on targets with 64-bit wid - 1usize as u32; - //~^ ERROR: casting `usize` to `u32` may truncate the value on targets with 64-bit wid - 1usize as i32; - //~^ ERROR: casting `usize` to `i32` may truncate the value on targets with 64-bit wid - //~| ERROR: casting `usize` to `i32` may wrap around the value on targets with 32-bit - //~| NOTE: `-D clippy::cast-possible-wrap` implied by `-D warnings` - // Casting to *size - 1i64 as isize; - //~^ ERROR: casting `i64` to `isize` may truncate the value on targets with 32-bit wid - 1i64 as usize; - //~^ ERROR: casting `i64` to `usize` may truncate the value on targets with 32-bit wid - 1u64 as isize; - //~^ ERROR: casting `u64` to `isize` may truncate the value on targets with 32-bit wid - //~| ERROR: casting `u64` to `isize` may wrap around the value on targets with 64-bit - 1u64 as usize; - //~^ ERROR: casting `u64` to `usize` may truncate the value on targets with 32-bit wid - 1u32 as isize; - //~^ ERROR: casting `u32` to `isize` may wrap around the value on targets with 32-bit - 1u32 as usize; // Should not trigger any lint - 1i32 as isize; // Neither should this - 1i32 as usize; - // Big integer literal to float - 999_999_999 as f32; - //~^ ERROR: casting `i32` to `f32` causes a loss of precision (`i32` is 32 bits wide, - 3_999_999_999usize as f64; - //~^ ERROR: casting integer literal to `f64` is unnecessary - //~| NOTE: `-D clippy::unnecessary-cast` implied by `-D warnings` -} diff --git a/tests/ui/checked_unwrap/simple_conditionals.rs b/tests/ui/checked_unwrap/simple_conditionals.rs index e82e7bcb0..02f80cc52 100644 --- a/tests/ui/checked_unwrap/simple_conditionals.rs +++ b/tests/ui/checked_unwrap/simple_conditionals.rs @@ -128,6 +128,57 @@ fn main() { assert!(x.is_ok(), "{:?}", x.unwrap_err()); } +fn issue11371() { + let option = Some(()); + + if option.is_some() { + option.as_ref().unwrap(); + //~^ ERROR: called `unwrap` on `option` after checking its variant with `is_some` + } else { + option.as_ref().unwrap(); + //~^ ERROR: this call to `unwrap()` will always panic + } + + let result = Ok::<(), ()>(()); + + if result.is_ok() { + result.as_ref().unwrap(); + //~^ ERROR: called `unwrap` on `result` after checking its variant with `is_ok` + } else { + result.as_ref().unwrap(); + //~^ ERROR: this call to `unwrap()` will always panic + } + + let mut option = Some(()); + if option.is_some() { + option.as_mut().unwrap(); + //~^ ERROR: called `unwrap` on `option` after checking its variant with `is_some` + } else { + option.as_mut().unwrap(); + //~^ ERROR: this call to `unwrap()` will always panic + } + + let mut result = Ok::<(), ()>(()); + if result.is_ok() { + result.as_mut().unwrap(); + //~^ ERROR: called `unwrap` on `result` after checking its variant with `is_ok` + } else { + result.as_mut().unwrap(); + //~^ ERROR: this call to `unwrap()` will always panic + } + + // This should not lint. Statics are, at the time of writing, not linted on anyway, + // but if at some point they are supported by this lint, it should correctly see that + // `X` is being mutated and not suggest `if let Some(..) = X {}` + static mut X: Option = Some(123); + unsafe { + if X.is_some() { + X = None; + X.unwrap(); + } + } +} + fn check_expect() { let x = Some(()); if x.is_some() { diff --git a/tests/ui/checked_unwrap/simple_conditionals.stderr b/tests/ui/checked_unwrap/simple_conditionals.stderr index ed603581e..a5afbba73 100644 --- a/tests/ui/checked_unwrap/simple_conditionals.stderr +++ b/tests/ui/checked_unwrap/simple_conditionals.stderr @@ -168,5 +168,73 @@ LL | if x.is_err() { LL | x.unwrap_err(); | ^^^^^^^^^^^^^^ -error: aborting due to 17 previous errors +error: called `unwrap` on `option` after checking its variant with `is_some` + --> $DIR/simple_conditionals.rs:135:9 + | +LL | if option.is_some() { + | ------------------- help: try: `if let Some(..) = &option` +LL | option.as_ref().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +error: this call to `unwrap()` will always panic + --> $DIR/simple_conditionals.rs:138:9 + | +LL | if option.is_some() { + | ---------------- because of this check +... +LL | option.as_ref().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +error: called `unwrap` on `result` after checking its variant with `is_ok` + --> $DIR/simple_conditionals.rs:145:9 + | +LL | if result.is_ok() { + | ----------------- help: try: `if let Ok(..) = &result` +LL | result.as_ref().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +error: this call to `unwrap()` will always panic + --> $DIR/simple_conditionals.rs:148:9 + | +LL | if result.is_ok() { + | -------------- because of this check +... +LL | result.as_ref().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +error: called `unwrap` on `option` after checking its variant with `is_some` + --> $DIR/simple_conditionals.rs:154:9 + | +LL | if option.is_some() { + | ------------------- help: try: `if let Some(..) = &mut option` +LL | option.as_mut().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +error: this call to `unwrap()` will always panic + --> $DIR/simple_conditionals.rs:157:9 + | +LL | if option.is_some() { + | ---------------- because of this check +... +LL | option.as_mut().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +error: called `unwrap` on `result` after checking its variant with `is_ok` + --> $DIR/simple_conditionals.rs:163:9 + | +LL | if result.is_ok() { + | ----------------- help: try: `if let Ok(..) = &mut result` +LL | result.as_mut().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +error: this call to `unwrap()` will always panic + --> $DIR/simple_conditionals.rs:166:9 + | +LL | if result.is_ok() { + | -------------- because of this check +... +LL | result.as_mut().unwrap(); + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +error: aborting due to 25 previous errors diff --git a/tests/ui/clone_on_copy_impl.rs b/tests/ui/clone_on_copy_impl.rs index b7c186bef..2d03544ad 100644 --- a/tests/ui/clone_on_copy_impl.rs +++ b/tests/ui/clone_on_copy_impl.rs @@ -1,4 +1,4 @@ -#![allow(clippy::incorrect_clone_impl_on_copy_type)] +#![allow(clippy::non_canonical_clone_impl)] use std::fmt; use std::marker::PhantomData; diff --git a/tests/ui/crashes/ice-11337.rs b/tests/ui/crashes/ice-11337.rs new file mode 100644 index 000000000..0bed4035f --- /dev/null +++ b/tests/ui/crashes/ice-11337.rs @@ -0,0 +1,9 @@ +#![feature(trait_alias)] + +trait Confusing = Fn(i32) where F: Fn(u32); + +fn alias, F>(_: T, _: F) {} + +fn main() { + alias(|_| {}, |_| {}); +} diff --git a/tests/ui/crashes/ice-11422.fixed b/tests/ui/crashes/ice-11422.fixed new file mode 100644 index 000000000..ca5721cbb --- /dev/null +++ b/tests/ui/crashes/ice-11422.fixed @@ -0,0 +1,25 @@ +#![warn(clippy::implied_bounds_in_impls)] + +use std::fmt::Debug; +use std::ops::*; + +fn gen() -> impl PartialOrd + Debug {} + +struct Bar {} +trait Foo {} +trait FooNested> {} +impl Foo for Bar {} +impl FooNested for Bar {} + +fn foo() -> impl Foo + FooNested { + Bar {} +} + +fn test_impl_ops() -> impl Add + Sub + Mul + Div { + 1 +} +fn test_impl_assign_ops() -> impl AddAssign + SubAssign + MulAssign + DivAssign { + 1 +} + +fn main() {} diff --git a/tests/ui/crashes/ice-11422.rs b/tests/ui/crashes/ice-11422.rs new file mode 100644 index 000000000..355ec2480 --- /dev/null +++ b/tests/ui/crashes/ice-11422.rs @@ -0,0 +1,25 @@ +#![warn(clippy::implied_bounds_in_impls)] + +use std::fmt::Debug; +use std::ops::*; + +fn gen() -> impl PartialOrd + PartialEq + Debug {} + +struct Bar {} +trait Foo {} +trait FooNested> {} +impl Foo for Bar {} +impl FooNested for Bar {} + +fn foo() -> impl Foo + FooNested { + Bar {} +} + +fn test_impl_ops() -> impl Add + Sub + Mul + Div { + 1 +} +fn test_impl_assign_ops() -> impl AddAssign + SubAssign + MulAssign + DivAssign { + 1 +} + +fn main() {} diff --git a/tests/ui/crashes/ice-11422.stderr b/tests/ui/crashes/ice-11422.stderr new file mode 100644 index 000000000..fb80b5b14 --- /dev/null +++ b/tests/ui/crashes/ice-11422.stderr @@ -0,0 +1,16 @@ +error: this bound is already specified as the supertrait of `PartialOrd` + --> $DIR/ice-11422.rs:6:31 + | +LL | fn gen() -> impl PartialOrd + PartialEq + Debug {} + | ^^^^^^^^^ + | + = note: `-D clippy::implied-bounds-in-impls` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::implied_bounds_in_impls)]` +help: try removing this bound + | +LL - fn gen() -> impl PartialOrd + PartialEq + Debug {} +LL + fn gen() -> impl PartialOrd + Debug {} + | + +error: aborting due to previous error + diff --git a/tests/ui/crashes/ice-360.rs b/tests/ui/crashes/ice-360.rs index 28589e1ef..0d10932b0 100644 --- a/tests/ui/crashes/ice-360.rs +++ b/tests/ui/crashes/ice-360.rs @@ -3,7 +3,8 @@ fn main() {} fn no_panic(slice: &[T]) { let mut iter = slice.iter(); loop { - //~^ ERROR: this loop could be written as a `while let` loop + //~^ ERROR: this loop never actually loops + //~| ERROR: this loop could be written as a `while let` loop //~| NOTE: `-D clippy::while-let-loop` implied by `-D warnings` let _ = match iter.next() { Some(ele) => ele, diff --git a/tests/ui/crashes/ice-360.stderr b/tests/ui/crashes/ice-360.stderr index dd016355b..a84697a9f 100644 --- a/tests/ui/crashes/ice-360.stderr +++ b/tests/ui/crashes/ice-360.stderr @@ -1,10 +1,24 @@ +error: this loop never actually loops + --> $DIR/ice-360.rs:5:5 + | +LL | / loop { +LL | | +LL | | +LL | | +... | +LL | | +LL | | } + | |_____^ + | + = note: `#[deny(clippy::never_loop)]` on by default + error: this loop could be written as a `while let` loop --> $DIR/ice-360.rs:5:5 | LL | / loop { LL | | LL | | -LL | | let _ = match iter.next() { +LL | | ... | LL | | LL | | } @@ -14,7 +28,7 @@ LL | | } = help: to override `-D warnings` add `#[allow(clippy::while_let_loop)]` error: empty `loop {}` wastes CPU cycles - --> $DIR/ice-360.rs:12:9 + --> $DIR/ice-360.rs:13:9 | LL | loop {} | ^^^^^^^ @@ -23,5 +37,5 @@ LL | loop {} = note: `-D clippy::empty-loop` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::empty_loop)]` -error: aborting due to 2 previous errors +error: aborting due to 3 previous errors diff --git a/tests/ui/derivable_impls.fixed b/tests/ui/derivable_impls.fixed index 6cc202414..68c5a5c5c 100644 --- a/tests/ui/derivable_impls.fixed +++ b/tests/ui/derivable_impls.fixed @@ -287,4 +287,17 @@ mod issue10158 { } } +mod issue11368 { + pub struct A { + a: u32, + } + + impl Default for A { + #[track_caller] + fn default() -> Self { + Self { a: 0 } + } + } +} + fn main() {} diff --git a/tests/ui/derivable_impls.rs b/tests/ui/derivable_impls.rs index 0aa9acd75..21d73ba8b 100644 --- a/tests/ui/derivable_impls.rs +++ b/tests/ui/derivable_impls.rs @@ -323,4 +323,17 @@ mod issue10158 { } } +mod issue11368 { + pub struct A { + a: u32, + } + + impl Default for A { + #[track_caller] + fn default() -> Self { + Self { a: 0 } + } + } +} + fn main() {} diff --git a/tests/ui/derive.rs b/tests/ui/derive.rs index 310c70176..20ac8a6e6 100644 --- a/tests/ui/derive.rs +++ b/tests/ui/derive.rs @@ -1,8 +1,4 @@ -#![allow( - clippy::incorrect_clone_impl_on_copy_type, - clippy::incorrect_partial_ord_impl_on_ord_type, - dead_code -)] +#![allow(clippy::non_canonical_clone_impl, clippy::non_canonical_partial_ord_impl, dead_code)] #![warn(clippy::expl_impl_clone_on_copy)] diff --git a/tests/ui/derive.stderr b/tests/ui/derive.stderr index e9b2ee347..88942d954 100644 --- a/tests/ui/derive.stderr +++ b/tests/ui/derive.stderr @@ -1,5 +1,5 @@ error: you are implementing `Clone` explicitly on a `Copy` type - --> $DIR/derive.rs:12:1 + --> $DIR/derive.rs:8:1 | LL | / impl Clone for Qux { LL | | @@ -10,7 +10,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> $DIR/derive.rs:12:1 + --> $DIR/derive.rs:8:1 | LL | / impl Clone for Qux { LL | | @@ -23,7 +23,7 @@ LL | | } = help: to override `-D warnings` add `#[allow(clippy::expl_impl_clone_on_copy)]` error: you are implementing `Clone` explicitly on a `Copy` type - --> $DIR/derive.rs:37:1 + --> $DIR/derive.rs:33:1 | LL | / impl<'a> Clone for Lt<'a> { LL | | @@ -34,7 +34,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> $DIR/derive.rs:37:1 + --> $DIR/derive.rs:33:1 | LL | / impl<'a> Clone for Lt<'a> { LL | | @@ -45,7 +45,7 @@ LL | | } | |_^ error: you are implementing `Clone` explicitly on a `Copy` type - --> $DIR/derive.rs:49:1 + --> $DIR/derive.rs:45:1 | LL | / impl Clone for BigArray { LL | | @@ -56,7 +56,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> $DIR/derive.rs:49:1 + --> $DIR/derive.rs:45:1 | LL | / impl Clone for BigArray { LL | | @@ -67,7 +67,7 @@ LL | | } | |_^ error: you are implementing `Clone` explicitly on a `Copy` type - --> $DIR/derive.rs:61:1 + --> $DIR/derive.rs:57:1 | LL | / impl Clone for FnPtr { LL | | @@ -78,7 +78,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> $DIR/derive.rs:61:1 + --> $DIR/derive.rs:57:1 | LL | / impl Clone for FnPtr { LL | | @@ -89,7 +89,7 @@ LL | | } | |_^ error: you are implementing `Clone` explicitly on a `Copy` type - --> $DIR/derive.rs:82:1 + --> $DIR/derive.rs:78:1 | LL | / impl Clone for Generic2 { LL | | @@ -100,7 +100,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> $DIR/derive.rs:82:1 + --> $DIR/derive.rs:78:1 | LL | / impl Clone for Generic2 { LL | | diff --git a/tests/ui/derive_ord_xor_partial_ord.rs b/tests/ui/derive_ord_xor_partial_ord.rs index 2c19942d4..1c7e6d1c2 100644 --- a/tests/ui/derive_ord_xor_partial_ord.rs +++ b/tests/ui/derive_ord_xor_partial_ord.rs @@ -1,6 +1,6 @@ #![warn(clippy::derive_ord_xor_partial_ord)] #![allow(clippy::unnecessary_wraps)] -#![allow(clippy::incorrect_partial_ord_impl_on_ord_type)] +#![allow(clippy::non_canonical_partial_ord_impl)] use std::cmp::Ordering; diff --git a/tests/ui/empty_loop.rs b/tests/ui/empty_loop.rs index 54e8fb490..be3475631 100644 --- a/tests/ui/empty_loop.rs +++ b/tests/ui/empty_loop.rs @@ -7,10 +7,12 @@ use proc_macros::{external, inline_macros}; fn should_trigger() { loop {} + #[allow(clippy::never_loop)] loop { loop {} } + #[allow(clippy::never_loop)] 'outer: loop { 'inner: loop {} } @@ -18,6 +20,7 @@ fn should_trigger() { #[inline_macros] fn should_not_trigger() { + #[allow(clippy::never_loop)] loop { panic!("This is fine") } diff --git a/tests/ui/empty_loop.stderr b/tests/ui/empty_loop.stderr index 84d7d61c7..113556f67 100644 --- a/tests/ui/empty_loop.stderr +++ b/tests/ui/empty_loop.stderr @@ -9,7 +9,7 @@ LL | loop {} = help: to override `-D warnings` add `#[allow(clippy::empty_loop)]` error: empty `loop {}` wastes CPU cycles - --> $DIR/empty_loop.rs:11:9 + --> $DIR/empty_loop.rs:12:9 | LL | loop {} | ^^^^^^^ @@ -17,7 +17,7 @@ LL | loop {} = help: you should either use `panic!()` or add `std::thread::sleep(..);` to the loop body error: empty `loop {}` wastes CPU cycles - --> $DIR/empty_loop.rs:15:9 + --> $DIR/empty_loop.rs:17:9 | LL | 'inner: loop {} | ^^^^^^^^^^^^^^^ diff --git a/tests/ui/enum_clike_unportable_variant.rs b/tests/ui/enum_clike_unportable_variant.rs index 964e5634d..c50404c50 100644 --- a/tests/ui/enum_clike_unportable_variant.rs +++ b/tests/ui/enum_clike_unportable_variant.rs @@ -1,4 +1,4 @@ -//@ignore-target-x86 +//@ignore-32bit #![warn(clippy::enum_clike_unportable_variant)] #![allow(unused, non_upper_case_globals)] diff --git a/tests/ui/enum_clike_unportable_variant.stderr b/tests/ui/enum_clike_unportable_variant.stderr index 5935eea5e..93ad4daa9 100644 --- a/tests/ui/enum_clike_unportable_variant.stderr +++ b/tests/ui/enum_clike_unportable_variant.stderr @@ -5,51 +5,52 @@ LL | X = 0x1_0000_0000, | ^^^^^^^^^^^^^^^^^ | = note: `-D clippy::enum-clike-unportable-variant` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::enum_clike_unportable_variant)]` error: C-like enum variant discriminant is not portable to 32-bit targets - --> $DIR/enum_clike_unportable_variant.rs:15:5 + --> $DIR/enum_clike_unportable_variant.rs:17:5 | LL | X = 0x1_0000_0000, | ^^^^^^^^^^^^^^^^^ error: C-like enum variant discriminant is not portable to 32-bit targets - --> $DIR/enum_clike_unportable_variant.rs:18:5 + --> $DIR/enum_clike_unportable_variant.rs:21:5 | LL | A = 0xFFFF_FFFF, | ^^^^^^^^^^^^^^^ error: C-like enum variant discriminant is not portable to 32-bit targets - --> $DIR/enum_clike_unportable_variant.rs:25:5 + --> $DIR/enum_clike_unportable_variant.rs:29:5 | LL | Z = 0xFFFF_FFFF, | ^^^^^^^^^^^^^^^ error: C-like enum variant discriminant is not portable to 32-bit targets - --> $DIR/enum_clike_unportable_variant.rs:26:5 + --> $DIR/enum_clike_unportable_variant.rs:31:5 | LL | A = 0x1_0000_0000, | ^^^^^^^^^^^^^^^^^ error: C-like enum variant discriminant is not portable to 32-bit targets - --> $DIR/enum_clike_unportable_variant.rs:28:5 + --> $DIR/enum_clike_unportable_variant.rs:34:5 | LL | C = (i32::MIN as isize) - 1, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: C-like enum variant discriminant is not portable to 32-bit targets - --> $DIR/enum_clike_unportable_variant.rs:34:5 + --> $DIR/enum_clike_unportable_variant.rs:41:5 | LL | Z = 0xFFFF_FFFF, | ^^^^^^^^^^^^^^^ error: C-like enum variant discriminant is not portable to 32-bit targets - --> $DIR/enum_clike_unportable_variant.rs:35:5 + --> $DIR/enum_clike_unportable_variant.rs:43:5 | LL | A = 0x1_0000_0000, | ^^^^^^^^^^^^^^^^^ error: C-like enum variant discriminant is not portable to 32-bit targets - --> $DIR/enum_clike_unportable_variant.rs:40:5 + --> $DIR/enum_clike_unportable_variant.rs:49:5 | LL | X = ::Number, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/explicit_auto_deref.fixed b/tests/ui/explicit_auto_deref.fixed index 86bee11eb..12158d0d1 100644 --- a/tests/ui/explicit_auto_deref.fixed +++ b/tests/ui/explicit_auto_deref.fixed @@ -205,7 +205,7 @@ fn main() { } } - f_str(&&ref_str); // `needless_borrow` will suggest removing both references + f_str(&ref_str); // `needless_borrow` will suggest removing both references f_str(&ref_str); // `needless_borrow` will suggest removing only one reference let x = &&40; @@ -293,4 +293,32 @@ fn main() { fn return_dyn_assoc<'a>(x: &'a &'a u32) -> &'a <&'a u32 as WithAssoc>::Assoc { *x } + + // Issue #11366 + let _: &mut u32 = match &mut Some(&mut 0u32) { + Some(x) => x, + None => panic!(), + }; + + // Issue #11474 + pub struct Variant { + pub anonymous: Variant0, + } + + pub union Variant0 { + pub anonymous: std::mem::ManuallyDrop, + } + + pub struct Variant00 { + pub anonymous: Variant000, + } + + pub union Variant000 { + pub val: i32, + } + + unsafe { + let mut p = core::mem::zeroed::(); + (*p.anonymous.anonymous).anonymous.val = 1; + } } diff --git a/tests/ui/explicit_auto_deref.rs b/tests/ui/explicit_auto_deref.rs index 7a505bdf5..dec021c18 100644 --- a/tests/ui/explicit_auto_deref.rs +++ b/tests/ui/explicit_auto_deref.rs @@ -293,4 +293,32 @@ fn main() { fn return_dyn_assoc<'a>(x: &'a &'a u32) -> &'a <&'a u32 as WithAssoc>::Assoc { *x } + + // Issue #11366 + let _: &mut u32 = match &mut Some(&mut 0u32) { + Some(x) => &mut *x, + None => panic!(), + }; + + // Issue #11474 + pub struct Variant { + pub anonymous: Variant0, + } + + pub union Variant0 { + pub anonymous: std::mem::ManuallyDrop, + } + + pub struct Variant00 { + pub anonymous: Variant000, + } + + pub union Variant000 { + pub val: i32, + } + + unsafe { + let mut p = core::mem::zeroed::(); + (*p.anonymous.anonymous).anonymous.val = 1; + } } diff --git a/tests/ui/explicit_auto_deref.stderr b/tests/ui/explicit_auto_deref.stderr index bea014d8a..3d2a7b0d9 100644 --- a/tests/ui/explicit_auto_deref.stderr +++ b/tests/ui/explicit_auto_deref.stderr @@ -194,10 +194,10 @@ LL | let _ = f_str(**ref_ref_str); | ^^^^^^^^^^^^^ help: try: `ref_ref_str` error: deref which would be done by auto-deref - --> $DIR/explicit_auto_deref.rs:208:13 + --> $DIR/explicit_auto_deref.rs:208:12 | LL | f_str(&&*ref_str); // `needless_borrow` will suggest removing both references - | ^^^^^^^^ help: try: `ref_str` + | ^^^^^^^^^ help: try: `ref_str` error: deref which would be done by auto-deref --> $DIR/explicit_auto_deref.rs:209:12 @@ -235,5 +235,11 @@ error: deref which would be done by auto-deref LL | *x | ^^ help: try: `x` -error: aborting due to 39 previous errors +error: deref which would be done by auto-deref + --> $DIR/explicit_auto_deref.rs:299:20 + | +LL | Some(x) => &mut *x, + | ^^^^^^^ help: try: `x` + +error: aborting due to 40 previous errors diff --git a/tests/ui/explicit_iter_loop.fixed b/tests/ui/explicit_iter_loop.fixed index 57292114e..f08397def 100644 --- a/tests/ui/explicit_iter_loop.fixed +++ b/tests/ui/explicit_iter_loop.fixed @@ -4,6 +4,7 @@ clippy::similar_names, clippy::needless_borrow, clippy::deref_addrof, + clippy::unnecessary_mut_passed, dead_code )] @@ -20,15 +21,15 @@ fn main() { for _ in rvec {} let rmvec = &mut vec; - for _ in &*rmvec {} - for _ in &mut *rmvec {} + for _ in rmvec.iter() {} + for _ in rmvec.iter_mut() {} for _ in &vec {} // these are fine for _ in &mut vec {} // these are fine for _ in &[1, 2, 3] {} - for _ in &*(&mut [1, 2, 3]) {} + for _ in (&mut [1, 2, 3]).iter() {} for _ in &[0; 32] {} for _ in &[0; 33] {} diff --git a/tests/ui/explicit_iter_loop.rs b/tests/ui/explicit_iter_loop.rs index 66280c238..2ee6825d4 100644 --- a/tests/ui/explicit_iter_loop.rs +++ b/tests/ui/explicit_iter_loop.rs @@ -4,6 +4,7 @@ clippy::similar_names, clippy::needless_borrow, clippy::deref_addrof, + clippy::unnecessary_mut_passed, dead_code )] diff --git a/tests/ui/explicit_iter_loop.stderr b/tests/ui/explicit_iter_loop.stderr index af46d74e9..725d9b63c 100644 --- a/tests/ui/explicit_iter_loop.stderr +++ b/tests/ui/explicit_iter_loop.stderr @@ -1,5 +1,5 @@ error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:16:14 + --> $DIR/explicit_iter_loop.rs:17:14 | LL | for _ in vec.iter() {} | ^^^^^^^^^^ help: to write this more concisely, try: `&vec` @@ -11,133 +11,106 @@ LL | #![deny(clippy::explicit_iter_loop)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:17:14 + --> $DIR/explicit_iter_loop.rs:18:14 | LL | for _ in vec.iter_mut() {} | ^^^^^^^^^^^^^^ help: to write this more concisely, try: `&mut vec` error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:20:14 + --> $DIR/explicit_iter_loop.rs:21:14 | LL | for _ in rvec.iter() {} | ^^^^^^^^^^^ help: to write this more concisely, try: `rvec` error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:23:14 - | -LL | for _ in rmvec.iter() {} - | ^^^^^^^^^^^^ help: to write this more concisely, try: `&*rmvec` - -error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:24:14 - | -LL | for _ in rmvec.iter_mut() {} - | ^^^^^^^^^^^^^^^^ help: to write this more concisely, try: `&mut *rmvec` - -error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:29:14 + --> $DIR/explicit_iter_loop.rs:30:14 | LL | for _ in [1, 2, 3].iter() {} | ^^^^^^^^^^^^^^^^ help: to write this more concisely, try: `&[1, 2, 3]` error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:31:14 - | -LL | for _ in (&mut [1, 2, 3]).iter() {} - | ^^^^^^^^^^^^^^^^^^^^^^^ help: to write this more concisely, try: `&*(&mut [1, 2, 3])` - -error: the method `iter` doesn't need a mutable reference - --> $DIR/explicit_iter_loop.rs:31:14 - | -LL | for _ in (&mut [1, 2, 3]).iter() {} - | ^^^^^^^^^^^^^^^^ - | - = note: `-D clippy::unnecessary-mut-passed` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::unnecessary_mut_passed)]` - -error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:33:14 + --> $DIR/explicit_iter_loop.rs:34:14 | LL | for _ in [0; 32].iter() {} | ^^^^^^^^^^^^^^ help: to write this more concisely, try: `&[0; 32]` error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:34:14 + --> $DIR/explicit_iter_loop.rs:35:14 | LL | for _ in [0; 33].iter() {} | ^^^^^^^^^^^^^^ help: to write this more concisely, try: `&[0; 33]` error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:37:14 + --> $DIR/explicit_iter_loop.rs:38:14 | LL | for _ in ll.iter() {} | ^^^^^^^^^ help: to write this more concisely, try: `&ll` error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:39:14 + --> $DIR/explicit_iter_loop.rs:40:14 | LL | for _ in rll.iter() {} | ^^^^^^^^^^ help: to write this more concisely, try: `rll` error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:42:14 + --> $DIR/explicit_iter_loop.rs:43:14 | LL | for _ in vd.iter() {} | ^^^^^^^^^ help: to write this more concisely, try: `&vd` error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:44:14 + --> $DIR/explicit_iter_loop.rs:45:14 | LL | for _ in rvd.iter() {} | ^^^^^^^^^^ help: to write this more concisely, try: `rvd` error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:47:14 + --> $DIR/explicit_iter_loop.rs:48:14 | LL | for _ in bh.iter() {} | ^^^^^^^^^ help: to write this more concisely, try: `&bh` error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:50:14 + --> $DIR/explicit_iter_loop.rs:51:14 | LL | for _ in hm.iter() {} | ^^^^^^^^^ help: to write this more concisely, try: `&hm` error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:53:14 + --> $DIR/explicit_iter_loop.rs:54:14 | LL | for _ in bt.iter() {} | ^^^^^^^^^ help: to write this more concisely, try: `&bt` error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:56:14 + --> $DIR/explicit_iter_loop.rs:57:14 | LL | for _ in hs.iter() {} | ^^^^^^^^^ help: to write this more concisely, try: `&hs` error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:59:14 + --> $DIR/explicit_iter_loop.rs:60:14 | LL | for _ in bs.iter() {} | ^^^^^^^^^ help: to write this more concisely, try: `&bs` error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:148:14 + --> $DIR/explicit_iter_loop.rs:149:14 | LL | for _ in x.iter() {} | ^^^^^^^^ help: to write this more concisely, try: `&x` error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:149:14 + --> $DIR/explicit_iter_loop.rs:150:14 | LL | for _ in x.iter_mut() {} | ^^^^^^^^^^^^ help: to write this more concisely, try: `&mut x` error: it is more concise to loop over references to containers instead of using explicit iteration methods - --> $DIR/explicit_iter_loop.rs:152:14 + --> $DIR/explicit_iter_loop.rs:153:14 | LL | for _ in r.iter() {} | ^^^^^^^^ help: to write this more concisely, try: `r` -error: aborting due to 22 previous errors +error: aborting due to 18 previous errors diff --git a/tests/ui/float_cmp.rs b/tests/ui/float_cmp.rs index a547a6743..5057c6437 100644 --- a/tests/ui/float_cmp.rs +++ b/tests/ui/float_cmp.rs @@ -41,6 +41,16 @@ impl PartialEq for X { } } +impl PartialEq for X { + fn eq(&self, o: &f32) -> bool { + if self.val.is_nan() { + o.is_nan() + } else { + self.val == *o // no error, inside "eq" fn + } + } +} + fn main() { ZERO == 0f32; //no error, comparison with zero is ok 1.0f32 != f32::INFINITY; // also comparison with infinity @@ -48,6 +58,9 @@ fn main() { ZERO == 0.0; //no error, comparison with zero is ok ZERO + ZERO != 1.0; //no error, comparison with zero is ok + let x = X { val: 1.0 }; + x == 1.0; // no error, custom type that implement PartialOrder for float is not checked + ONE == 1f32; ONE == 1.0 + 0.0; ONE + ONE == ZERO + ONE + ONE; diff --git a/tests/ui/float_cmp.stderr b/tests/ui/float_cmp.stderr index cbe529954..217e29879 100644 --- a/tests/ui/float_cmp.stderr +++ b/tests/ui/float_cmp.stderr @@ -1,5 +1,5 @@ error: strict comparison of `f32` or `f64` - --> $DIR/float_cmp.rs:57:5 + --> $DIR/float_cmp.rs:70:5 | LL | ONE as f64 != 2.0; | ^^^^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(ONE as f64 - 2.0).abs() > error_margin` @@ -9,7 +9,7 @@ LL | ONE as f64 != 2.0; = help: to override `-D warnings` add `#[allow(clippy::float_cmp)]` error: strict comparison of `f32` or `f64` - --> $DIR/float_cmp.rs:64:5 + --> $DIR/float_cmp.rs:77:5 | LL | x == 1.0; | ^^^^^^^^ help: consider comparing them within some margin of error: `(x - 1.0).abs() < error_margin` @@ -17,7 +17,7 @@ LL | x == 1.0; = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` - --> $DIR/float_cmp.rs:69:5 + --> $DIR/float_cmp.rs:82:5 | LL | twice(x) != twice(ONE as f64); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(twice(x) - twice(ONE as f64)).abs() > error_margin` @@ -25,7 +25,7 @@ LL | twice(x) != twice(ONE as f64); = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` - --> $DIR/float_cmp.rs:91:5 + --> $DIR/float_cmp.rs:104:5 | LL | NON_ZERO_ARRAY[i] == NON_ZERO_ARRAY[j]; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(NON_ZERO_ARRAY[i] - NON_ZERO_ARRAY[j]).abs() < error_margin` @@ -33,7 +33,7 @@ LL | NON_ZERO_ARRAY[i] == NON_ZERO_ARRAY[j]; = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` arrays - --> $DIR/float_cmp.rs:98:5 + --> $DIR/float_cmp.rs:111:5 | LL | a1 == a2; | ^^^^^^^^ @@ -41,7 +41,7 @@ LL | a1 == a2; = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` - --> $DIR/float_cmp.rs:101:5 + --> $DIR/float_cmp.rs:114:5 | LL | a1[0] == a2[0]; | ^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(a1[0] - a2[0]).abs() < error_margin` diff --git a/tests/ui/fn_to_numeric_cast_32bit.stderr b/tests/ui/fn_to_numeric_cast.32bit.stderr similarity index 70% rename from tests/ui/fn_to_numeric_cast_32bit.stderr rename to tests/ui/fn_to_numeric_cast.32bit.stderr index 671347d2b..ea08d8c9c 100644 --- a/tests/ui/fn_to_numeric_cast_32bit.stderr +++ b/tests/ui/fn_to_numeric_cast.32bit.stderr @@ -1,141 +1,143 @@ error: casting function pointer `foo` to `i8`, which truncates the value - --> $DIR/fn_to_numeric_cast_32bit.rs:10:13 + --> $DIR/fn_to_numeric_cast.rs:10:13 | LL | let _ = foo as i8; | ^^^^^^^^^ help: try: `foo as usize` | = note: `-D clippy::fn-to-numeric-cast-with-truncation` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::fn_to_numeric_cast_with_truncation)]` error: casting function pointer `foo` to `i16`, which truncates the value - --> $DIR/fn_to_numeric_cast_32bit.rs:11:13 + --> $DIR/fn_to_numeric_cast.rs:11:13 | LL | let _ = foo as i16; | ^^^^^^^^^^ help: try: `foo as usize` -error: casting function pointer `foo` to `i32`, which truncates the value - --> $DIR/fn_to_numeric_cast_32bit.rs:12:13 +error: casting function pointer `foo` to `i32` + --> $DIR/fn_to_numeric_cast.rs:12:13 | LL | let _ = foo as i32; | ^^^^^^^^^^ help: try: `foo as usize` + | + = note: `-D clippy::fn-to-numeric-cast` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::fn_to_numeric_cast)]` error: casting function pointer `foo` to `i64` - --> $DIR/fn_to_numeric_cast_32bit.rs:13:13 + --> $DIR/fn_to_numeric_cast.rs:13:13 | LL | let _ = foo as i64; | ^^^^^^^^^^ help: try: `foo as usize` - | - = note: `-D clippy::fn-to-numeric-cast` implied by `-D warnings` error: casting function pointer `foo` to `i128` - --> $DIR/fn_to_numeric_cast_32bit.rs:14:13 + --> $DIR/fn_to_numeric_cast.rs:14:13 | LL | let _ = foo as i128; | ^^^^^^^^^^^ help: try: `foo as usize` error: casting function pointer `foo` to `isize` - --> $DIR/fn_to_numeric_cast_32bit.rs:15:13 + --> $DIR/fn_to_numeric_cast.rs:15:13 | LL | let _ = foo as isize; | ^^^^^^^^^^^^ help: try: `foo as usize` error: casting function pointer `foo` to `u8`, which truncates the value - --> $DIR/fn_to_numeric_cast_32bit.rs:17:13 + --> $DIR/fn_to_numeric_cast.rs:17:13 | LL | let _ = foo as u8; | ^^^^^^^^^ help: try: `foo as usize` error: casting function pointer `foo` to `u16`, which truncates the value - --> $DIR/fn_to_numeric_cast_32bit.rs:18:13 + --> $DIR/fn_to_numeric_cast.rs:18:13 | LL | let _ = foo as u16; | ^^^^^^^^^^ help: try: `foo as usize` -error: casting function pointer `foo` to `u32`, which truncates the value - --> $DIR/fn_to_numeric_cast_32bit.rs:19:13 +error: casting function pointer `foo` to `u32` + --> $DIR/fn_to_numeric_cast.rs:19:13 | LL | let _ = foo as u32; | ^^^^^^^^^^ help: try: `foo as usize` error: casting function pointer `foo` to `u64` - --> $DIR/fn_to_numeric_cast_32bit.rs:20:13 + --> $DIR/fn_to_numeric_cast.rs:20:13 | LL | let _ = foo as u64; | ^^^^^^^^^^ help: try: `foo as usize` error: casting function pointer `foo` to `u128` - --> $DIR/fn_to_numeric_cast_32bit.rs:21:13 + --> $DIR/fn_to_numeric_cast.rs:21:13 | LL | let _ = foo as u128; | ^^^^^^^^^^^ help: try: `foo as usize` error: casting function pointer `abc` to `i8`, which truncates the value - --> $DIR/fn_to_numeric_cast_32bit.rs:34:13 + --> $DIR/fn_to_numeric_cast.rs:34:13 | LL | let _ = abc as i8; | ^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `i16`, which truncates the value - --> $DIR/fn_to_numeric_cast_32bit.rs:35:13 + --> $DIR/fn_to_numeric_cast.rs:35:13 | LL | let _ = abc as i16; | ^^^^^^^^^^ help: try: `abc as usize` -error: casting function pointer `abc` to `i32`, which truncates the value - --> $DIR/fn_to_numeric_cast_32bit.rs:36:13 +error: casting function pointer `abc` to `i32` + --> $DIR/fn_to_numeric_cast.rs:36:13 | LL | let _ = abc as i32; | ^^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `i64` - --> $DIR/fn_to_numeric_cast_32bit.rs:37:13 + --> $DIR/fn_to_numeric_cast.rs:37:13 | LL | let _ = abc as i64; | ^^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `i128` - --> $DIR/fn_to_numeric_cast_32bit.rs:38:13 + --> $DIR/fn_to_numeric_cast.rs:38:13 | LL | let _ = abc as i128; | ^^^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `isize` - --> $DIR/fn_to_numeric_cast_32bit.rs:39:13 + --> $DIR/fn_to_numeric_cast.rs:39:13 | LL | let _ = abc as isize; | ^^^^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `u8`, which truncates the value - --> $DIR/fn_to_numeric_cast_32bit.rs:41:13 + --> $DIR/fn_to_numeric_cast.rs:41:13 | LL | let _ = abc as u8; | ^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `u16`, which truncates the value - --> $DIR/fn_to_numeric_cast_32bit.rs:42:13 + --> $DIR/fn_to_numeric_cast.rs:42:13 | LL | let _ = abc as u16; | ^^^^^^^^^^ help: try: `abc as usize` -error: casting function pointer `abc` to `u32`, which truncates the value - --> $DIR/fn_to_numeric_cast_32bit.rs:43:13 +error: casting function pointer `abc` to `u32` + --> $DIR/fn_to_numeric_cast.rs:43:13 | LL | let _ = abc as u32; | ^^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `u64` - --> $DIR/fn_to_numeric_cast_32bit.rs:44:13 + --> $DIR/fn_to_numeric_cast.rs:44:13 | LL | let _ = abc as u64; | ^^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `u128` - --> $DIR/fn_to_numeric_cast_32bit.rs:45:13 + --> $DIR/fn_to_numeric_cast.rs:45:13 | LL | let _ = abc as u128; | ^^^^^^^^^^^ help: try: `abc as usize` -error: casting function pointer `f` to `i32`, which truncates the value - --> $DIR/fn_to_numeric_cast_32bit.rs:52:5 +error: casting function pointer `f` to `i32` + --> $DIR/fn_to_numeric_cast.rs:52:5 | LL | f as i32 | ^^^^^^^^ help: try: `f as usize` diff --git a/tests/ui/fn_to_numeric_cast.stderr b/tests/ui/fn_to_numeric_cast.64bit.stderr similarity index 85% rename from tests/ui/fn_to_numeric_cast.stderr rename to tests/ui/fn_to_numeric_cast.64bit.stderr index 53e8ac3c4..62f3bfa70 100644 --- a/tests/ui/fn_to_numeric_cast.stderr +++ b/tests/ui/fn_to_numeric_cast.64bit.stderr @@ -8,19 +8,19 @@ LL | let _ = foo as i8; = help: to override `-D warnings` add `#[allow(clippy::fn_to_numeric_cast_with_truncation)]` error: casting function pointer `foo` to `i16`, which truncates the value - --> $DIR/fn_to_numeric_cast.rs:13:13 + --> $DIR/fn_to_numeric_cast.rs:11:13 | LL | let _ = foo as i16; | ^^^^^^^^^^ help: try: `foo as usize` error: casting function pointer `foo` to `i32`, which truncates the value - --> $DIR/fn_to_numeric_cast.rs:15:13 + --> $DIR/fn_to_numeric_cast.rs:12:13 | LL | let _ = foo as i32; | ^^^^^^^^^^ help: try: `foo as usize` error: casting function pointer `foo` to `i64` - --> $DIR/fn_to_numeric_cast.rs:17:13 + --> $DIR/fn_to_numeric_cast.rs:13:13 | LL | let _ = foo as i64; | ^^^^^^^^^^ help: try: `foo as usize` @@ -29,115 +29,115 @@ LL | let _ = foo as i64; = help: to override `-D warnings` add `#[allow(clippy::fn_to_numeric_cast)]` error: casting function pointer `foo` to `i128` - --> $DIR/fn_to_numeric_cast.rs:20:13 + --> $DIR/fn_to_numeric_cast.rs:14:13 | LL | let _ = foo as i128; | ^^^^^^^^^^^ help: try: `foo as usize` error: casting function pointer `foo` to `isize` - --> $DIR/fn_to_numeric_cast.rs:22:13 + --> $DIR/fn_to_numeric_cast.rs:15:13 | LL | let _ = foo as isize; | ^^^^^^^^^^^^ help: try: `foo as usize` error: casting function pointer `foo` to `u8`, which truncates the value - --> $DIR/fn_to_numeric_cast.rs:25:13 + --> $DIR/fn_to_numeric_cast.rs:17:13 | LL | let _ = foo as u8; | ^^^^^^^^^ help: try: `foo as usize` error: casting function pointer `foo` to `u16`, which truncates the value - --> $DIR/fn_to_numeric_cast.rs:27:13 + --> $DIR/fn_to_numeric_cast.rs:18:13 | LL | let _ = foo as u16; | ^^^^^^^^^^ help: try: `foo as usize` error: casting function pointer `foo` to `u32`, which truncates the value - --> $DIR/fn_to_numeric_cast.rs:29:13 + --> $DIR/fn_to_numeric_cast.rs:19:13 | LL | let _ = foo as u32; | ^^^^^^^^^^ help: try: `foo as usize` error: casting function pointer `foo` to `u64` - --> $DIR/fn_to_numeric_cast.rs:31:13 + --> $DIR/fn_to_numeric_cast.rs:20:13 | LL | let _ = foo as u64; | ^^^^^^^^^^ help: try: `foo as usize` error: casting function pointer `foo` to `u128` - --> $DIR/fn_to_numeric_cast.rs:33:13 + --> $DIR/fn_to_numeric_cast.rs:21:13 | LL | let _ = foo as u128; | ^^^^^^^^^^^ help: try: `foo as usize` error: casting function pointer `abc` to `i8`, which truncates the value - --> $DIR/fn_to_numeric_cast.rs:47:13 + --> $DIR/fn_to_numeric_cast.rs:34:13 | LL | let _ = abc as i8; | ^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `i16`, which truncates the value - --> $DIR/fn_to_numeric_cast.rs:49:13 + --> $DIR/fn_to_numeric_cast.rs:35:13 | LL | let _ = abc as i16; | ^^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `i32`, which truncates the value - --> $DIR/fn_to_numeric_cast.rs:51:13 + --> $DIR/fn_to_numeric_cast.rs:36:13 | LL | let _ = abc as i32; | ^^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `i64` - --> $DIR/fn_to_numeric_cast.rs:53:13 + --> $DIR/fn_to_numeric_cast.rs:37:13 | LL | let _ = abc as i64; | ^^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `i128` - --> $DIR/fn_to_numeric_cast.rs:55:13 + --> $DIR/fn_to_numeric_cast.rs:38:13 | LL | let _ = abc as i128; | ^^^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `isize` - --> $DIR/fn_to_numeric_cast.rs:57:13 + --> $DIR/fn_to_numeric_cast.rs:39:13 | LL | let _ = abc as isize; | ^^^^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `u8`, which truncates the value - --> $DIR/fn_to_numeric_cast.rs:60:13 + --> $DIR/fn_to_numeric_cast.rs:41:13 | LL | let _ = abc as u8; | ^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `u16`, which truncates the value - --> $DIR/fn_to_numeric_cast.rs:62:13 + --> $DIR/fn_to_numeric_cast.rs:42:13 | LL | let _ = abc as u16; | ^^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `u32`, which truncates the value - --> $DIR/fn_to_numeric_cast.rs:64:13 + --> $DIR/fn_to_numeric_cast.rs:43:13 | LL | let _ = abc as u32; | ^^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `u64` - --> $DIR/fn_to_numeric_cast.rs:66:13 + --> $DIR/fn_to_numeric_cast.rs:44:13 | LL | let _ = abc as u64; | ^^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `abc` to `u128` - --> $DIR/fn_to_numeric_cast.rs:68:13 + --> $DIR/fn_to_numeric_cast.rs:45:13 | LL | let _ = abc as u128; | ^^^^^^^^^^^ help: try: `abc as usize` error: casting function pointer `f` to `i32`, which truncates the value - --> $DIR/fn_to_numeric_cast.rs:76:5 + --> $DIR/fn_to_numeric_cast.rs:52:5 | LL | f as i32 | ^^^^^^^^ help: try: `f as usize` diff --git a/tests/ui/fn_to_numeric_cast.rs b/tests/ui/fn_to_numeric_cast.rs index 09128d817..9501eb5da 100644 --- a/tests/ui/fn_to_numeric_cast.rs +++ b/tests/ui/fn_to_numeric_cast.rs @@ -1,4 +1,4 @@ -//@ignore-32bit +//@stderr-per-bitwidth //@no-rustfix #![warn(clippy::fn_to_numeric_cast, clippy::fn_to_numeric_cast_with_truncation)] @@ -8,30 +8,17 @@ fn foo() -> String { fn test_function_to_numeric_cast() { let _ = foo as i8; - //~^ ERROR: casting function pointer `foo` to `i8`, which truncates the value - //~| NOTE: `-D clippy::fn-to-numeric-cast-with-truncation` implied by `-D warnings` let _ = foo as i16; - //~^ ERROR: casting function pointer `foo` to `i16`, which truncates the value let _ = foo as i32; - //~^ ERROR: casting function pointer `foo` to `i32`, which truncates the value let _ = foo as i64; - //~^ ERROR: casting function pointer `foo` to `i64` - //~| NOTE: `-D clippy::fn-to-numeric-cast` implied by `-D warnings` let _ = foo as i128; - //~^ ERROR: casting function pointer `foo` to `i128` let _ = foo as isize; - //~^ ERROR: casting function pointer `foo` to `isize` let _ = foo as u8; - //~^ ERROR: casting function pointer `foo` to `u8`, which truncates the value let _ = foo as u16; - //~^ ERROR: casting function pointer `foo` to `u16`, which truncates the value let _ = foo as u32; - //~^ ERROR: casting function pointer `foo` to `u32`, which truncates the value let _ = foo as u64; - //~^ ERROR: casting function pointer `foo` to `u64` let _ = foo as u128; - //~^ ERROR: casting function pointer `foo` to `u128` // Casting to usize is OK and should not warn let _ = foo as usize; @@ -45,28 +32,17 @@ fn test_function_var_to_numeric_cast() { let abc: fn() -> String = foo; let _ = abc as i8; - //~^ ERROR: casting function pointer `abc` to `i8`, which truncates the value let _ = abc as i16; - //~^ ERROR: casting function pointer `abc` to `i16`, which truncates the value let _ = abc as i32; - //~^ ERROR: casting function pointer `abc` to `i32`, which truncates the value let _ = abc as i64; - //~^ ERROR: casting function pointer `abc` to `i64` let _ = abc as i128; - //~^ ERROR: casting function pointer `abc` to `i128` let _ = abc as isize; - //~^ ERROR: casting function pointer `abc` to `isize` let _ = abc as u8; - //~^ ERROR: casting function pointer `abc` to `u8`, which truncates the value let _ = abc as u16; - //~^ ERROR: casting function pointer `abc` to `u16`, which truncates the value let _ = abc as u32; - //~^ ERROR: casting function pointer `abc` to `u32`, which truncates the value let _ = abc as u64; - //~^ ERROR: casting function pointer `abc` to `u64` let _ = abc as u128; - //~^ ERROR: casting function pointer `abc` to `u128` // Casting to usize is OK and should not warn let _ = abc as usize; @@ -74,7 +50,6 @@ fn test_function_var_to_numeric_cast() { fn fn_with_fn_args(f: fn(i32) -> i32) -> i32 { f as i32 - //~^ ERROR: casting function pointer `f` to `i32`, which truncates the value } fn main() {} diff --git a/tests/ui/fn_to_numeric_cast_32bit.rs b/tests/ui/fn_to_numeric_cast_32bit.rs deleted file mode 100644 index 93e9361f4..000000000 --- a/tests/ui/fn_to_numeric_cast_32bit.rs +++ /dev/null @@ -1,80 +0,0 @@ -//@ignore-64bit - -#![warn(clippy::fn_to_numeric_cast, clippy::fn_to_numeric_cast_with_truncation)] - -fn foo() -> String { - String::new() -} - -fn test_function_to_numeric_cast() { - let _ = foo as i8; - //~^ ERROR: casting function pointer `foo` to `i8`, which truncates the value - //~| NOTE: `-D clippy::fn-to-numeric-cast-with-truncation` implied by `-D warnings` - let _ = foo as i16; - //~^ ERROR: casting function pointer `foo` to `i16`, which truncates the value - let _ = foo as i32; - //~^ ERROR: casting function pointer `foo` to `i32`, which truncates the value - let _ = foo as i64; - //~^ ERROR: casting function pointer `foo` to `i64` - //~| NOTE: `-D clippy::fn-to-numeric-cast` implied by `-D warnings` - let _ = foo as i128; - //~^ ERROR: casting function pointer `foo` to `i128` - let _ = foo as isize; - //~^ ERROR: casting function pointer `foo` to `isize` - - let _ = foo as u8; - //~^ ERROR: casting function pointer `foo` to `u8`, which truncates the value - let _ = foo as u16; - //~^ ERROR: casting function pointer `foo` to `u16`, which truncates the value - let _ = foo as u32; - //~^ ERROR: casting function pointer `foo` to `u32`, which truncates the value - let _ = foo as u64; - //~^ ERROR: casting function pointer `foo` to `u64` - let _ = foo as u128; - //~^ ERROR: casting function pointer `foo` to `u128` - - // Casting to usize is OK and should not warn - let _ = foo as usize; - - // Cast `f` (a `FnDef`) to `fn()` should not warn - fn f() {} - let _ = f as fn(); -} - -fn test_function_var_to_numeric_cast() { - let abc: fn() -> String = foo; - - let _ = abc as i8; - //~^ ERROR: casting function pointer `abc` to `i8`, which truncates the value - let _ = abc as i16; - //~^ ERROR: casting function pointer `abc` to `i16`, which truncates the value - let _ = abc as i32; - //~^ ERROR: casting function pointer `abc` to `i32`, which truncates the value - let _ = abc as i64; - //~^ ERROR: casting function pointer `abc` to `i64` - let _ = abc as i128; - //~^ ERROR: casting function pointer `abc` to `i128` - let _ = abc as isize; - //~^ ERROR: casting function pointer `abc` to `isize` - - let _ = abc as u8; - //~^ ERROR: casting function pointer `abc` to `u8`, which truncates the value - let _ = abc as u16; - //~^ ERROR: casting function pointer `abc` to `u16`, which truncates the value - let _ = abc as u32; - //~^ ERROR: casting function pointer `abc` to `u32`, which truncates the value - let _ = abc as u64; - //~^ ERROR: casting function pointer `abc` to `u64` - let _ = abc as u128; - //~^ ERROR: casting function pointer `abc` to `u128` - - // Casting to usize is OK and should not warn - let _ = abc as usize; -} - -fn fn_with_fn_args(f: fn(i32) -> i32) -> i32 { - f as i32 - //~^ ERROR: casting function pointer `f` to `i32`, which truncates the value -} - -fn main() {} diff --git a/tests/ui/if_then_some_else_none.rs b/tests/ui/if_then_some_else_none.rs index 8fa0f34a6..77abd663e 100644 --- a/tests/ui/if_then_some_else_none.rs +++ b/tests/ui/if_then_some_else_none.rs @@ -117,3 +117,15 @@ fn f(b: bool, v: Option<()>) -> Option<()> { None } } + +fn issue11394(b: bool, v: Result<(), ()>) -> Result<(), ()> { + let x = if b { + #[allow(clippy::let_unit_value)] + let _ = v?; + Some(()) + } else { + None + }; + + Ok(()) +} diff --git a/tests/ui/ignored_unit_patterns.fixed b/tests/ui/ignored_unit_patterns.fixed index 2912eede4..6c6f21fee 100644 --- a/tests/ui/ignored_unit_patterns.fixed +++ b/tests/ui/ignored_unit_patterns.fixed @@ -1,5 +1,5 @@ #![warn(clippy::ignored_unit_patterns)] -#![allow(clippy::redundant_pattern_matching, clippy::single_match)] +#![allow(clippy::let_unit_value, clippy::redundant_pattern_matching, clippy::single_match)] fn foo() -> Result<(), ()> { unimplemented!() @@ -7,9 +7,19 @@ fn foo() -> Result<(), ()> { fn main() { match foo() { - Ok(()) => {}, - Err(()) => {}, + Ok(()) => {}, //~ ERROR: matching over `()` is more explicit + Err(()) => {}, //~ ERROR: matching over `()` is more explicit } if let Ok(()) = foo() {} + //~^ ERROR: matching over `()` is more explicit let _ = foo().map_err(|()| todo!()); + //~^ ERROR: matching over `()` is more explicit +} + +#[allow(unused)] +pub fn moo(_: ()) { + let () = foo().unwrap(); + //~^ ERROR: matching over `()` is more explicit + let _: () = foo().unwrap(); + let _: () = (); } diff --git a/tests/ui/ignored_unit_patterns.rs b/tests/ui/ignored_unit_patterns.rs index d180cd8d2..5e8c2e03b 100644 --- a/tests/ui/ignored_unit_patterns.rs +++ b/tests/ui/ignored_unit_patterns.rs @@ -1,5 +1,5 @@ #![warn(clippy::ignored_unit_patterns)] -#![allow(clippy::redundant_pattern_matching, clippy::single_match)] +#![allow(clippy::let_unit_value, clippy::redundant_pattern_matching, clippy::single_match)] fn foo() -> Result<(), ()> { unimplemented!() @@ -7,9 +7,19 @@ fn foo() -> Result<(), ()> { fn main() { match foo() { - Ok(_) => {}, - Err(_) => {}, + Ok(_) => {}, //~ ERROR: matching over `()` is more explicit + Err(_) => {}, //~ ERROR: matching over `()` is more explicit } if let Ok(_) = foo() {} + //~^ ERROR: matching over `()` is more explicit let _ = foo().map_err(|_| todo!()); + //~^ ERROR: matching over `()` is more explicit +} + +#[allow(unused)] +pub fn moo(_: ()) { + let _ = foo().unwrap(); + //~^ ERROR: matching over `()` is more explicit + let _: () = foo().unwrap(); + let _: () = (); } diff --git a/tests/ui/ignored_unit_patterns.stderr b/tests/ui/ignored_unit_patterns.stderr index a8ced2239..df5e1d89e 100644 --- a/tests/ui/ignored_unit_patterns.stderr +++ b/tests/ui/ignored_unit_patterns.stderr @@ -20,10 +20,16 @@ LL | if let Ok(_) = foo() {} | ^ help: use `()` instead of `_`: `()` error: matching over `()` is more explicit - --> $DIR/ignored_unit_patterns.rs:14:28 + --> $DIR/ignored_unit_patterns.rs:15:28 | LL | let _ = foo().map_err(|_| todo!()); | ^ help: use `()` instead of `_`: `()` -error: aborting due to 4 previous errors +error: matching over `()` is more explicit + --> $DIR/ignored_unit_patterns.rs:21:9 + | +LL | let _ = foo().unwrap(); + | ^ help: use `()` instead of `_`: `()` + +error: aborting due to 5 previous errors diff --git a/tests/ui/implied_bounds_in_impls.fixed b/tests/ui/implied_bounds_in_impls.fixed index 952c2b706..a50fa0ccf 100644 --- a/tests/ui/implied_bounds_in_impls.fixed +++ b/tests/ui/implied_bounds_in_impls.fixed @@ -65,4 +65,61 @@ impl SomeTrait for SomeStruct { } } +mod issue11422 { + use core::fmt::Debug; + // Some additional tests that would cause ICEs: + + // `PartialOrd` has a default generic parameter and does not need to be explicitly specified. + // This needs special handling. + fn default_generic_param1() -> impl PartialOrd + Debug {} + fn default_generic_param2() -> impl PartialOrd + Debug {} + + // Referring to `Self` in the supertrait clause needs special handling. + trait Trait1 {} + trait Trait2: Trait1 {} + impl Trait1<()> for () {} + impl Trait2 for () {} + + fn f() -> impl Trait1<()> + Trait2 {} +} + +mod issue11435 { + // Associated type needs to be included on DoubleEndedIterator in the suggestion + fn my_iter() -> impl DoubleEndedIterator { + 0..5 + } + + // Removing the `Clone` bound should include the `+` behind it in its remove suggestion + fn f() -> impl Copy { + 1 + } + + trait Trait1 { + type U; + } + impl Trait1 for () { + type U = i64; + } + trait Trait2: Trait1 {} + impl Trait2 for () {} + + // When the other trait has generics, it shouldn't add another pair of `<>` + fn f2() -> impl Trait2 {} + + trait Trait3 { + type X; + type Y; + } + trait Trait4: Trait3 {} + impl Trait3 for () { + type X = i32; + type Y = i128; + } + impl Trait4 for () {} + + // Associated type `X` is specified, but `Y` is not, so only that associated type should be moved + // over + fn f3() -> impl Trait4 {} +} + fn main() {} diff --git a/tests/ui/implied_bounds_in_impls.rs b/tests/ui/implied_bounds_in_impls.rs index 475f2621b..e74ed4425 100644 --- a/tests/ui/implied_bounds_in_impls.rs +++ b/tests/ui/implied_bounds_in_impls.rs @@ -65,4 +65,61 @@ impl SomeTrait for SomeStruct { } } +mod issue11422 { + use core::fmt::Debug; + // Some additional tests that would cause ICEs: + + // `PartialOrd` has a default generic parameter and does not need to be explicitly specified. + // This needs special handling. + fn default_generic_param1() -> impl PartialEq + PartialOrd + Debug {} + fn default_generic_param2() -> impl PartialOrd + PartialEq + Debug {} + + // Referring to `Self` in the supertrait clause needs special handling. + trait Trait1 {} + trait Trait2: Trait1 {} + impl Trait1<()> for () {} + impl Trait2 for () {} + + fn f() -> impl Trait1<()> + Trait2 {} +} + +mod issue11435 { + // Associated type needs to be included on DoubleEndedIterator in the suggestion + fn my_iter() -> impl Iterator + DoubleEndedIterator { + 0..5 + } + + // Removing the `Clone` bound should include the `+` behind it in its remove suggestion + fn f() -> impl Copy + Clone { + 1 + } + + trait Trait1 { + type U; + } + impl Trait1 for () { + type U = i64; + } + trait Trait2: Trait1 {} + impl Trait2 for () {} + + // When the other trait has generics, it shouldn't add another pair of `<>` + fn f2() -> impl Trait1 + Trait2 {} + + trait Trait3 { + type X; + type Y; + } + trait Trait4: Trait3 {} + impl Trait3 for () { + type X = i32; + type Y = i128; + } + impl Trait4 for () {} + + // Associated type `X` is specified, but `Y` is not, so only that associated type should be moved + // over + fn f3() -> impl Trait3 + Trait4 {} +} + fn main() {} diff --git a/tests/ui/implied_bounds_in_impls.stderr b/tests/ui/implied_bounds_in_impls.stderr index e2b1ecb9f..72dc2a183 100644 --- a/tests/ui/implied_bounds_in_impls.stderr +++ b/tests/ui/implied_bounds_in_impls.stderr @@ -120,5 +120,77 @@ LL - fn f() -> impl Deref + DerefMut { LL + fn f() -> impl DerefMut { | -error: aborting due to 10 previous errors +error: this bound is already specified as the supertrait of `PartialOrd` + --> $DIR/implied_bounds_in_impls.rs:74:41 + | +LL | fn default_generic_param1() -> impl PartialEq + PartialOrd + Debug {} + | ^^^^^^^^^ + | +help: try removing this bound + | +LL - fn default_generic_param1() -> impl PartialEq + PartialOrd + Debug {} +LL + fn default_generic_param1() -> impl PartialOrd + Debug {} + | + +error: this bound is already specified as the supertrait of `PartialOrd` + --> $DIR/implied_bounds_in_impls.rs:75:54 + | +LL | fn default_generic_param2() -> impl PartialOrd + PartialEq + Debug {} + | ^^^^^^^^^ + | +help: try removing this bound + | +LL - fn default_generic_param2() -> impl PartialOrd + PartialEq + Debug {} +LL + fn default_generic_param2() -> impl PartialOrd + Debug {} + | + +error: this bound is already specified as the supertrait of `DoubleEndedIterator` + --> $DIR/implied_bounds_in_impls.rs:88:26 + | +LL | fn my_iter() -> impl Iterator + DoubleEndedIterator { + | ^^^^^^^^^^^^^^^^^^^^ + | +help: try removing this bound + | +LL - fn my_iter() -> impl Iterator + DoubleEndedIterator { +LL + fn my_iter() -> impl DoubleEndedIterator { + | + +error: this bound is already specified as the supertrait of `Copy` + --> $DIR/implied_bounds_in_impls.rs:93:27 + | +LL | fn f() -> impl Copy + Clone { + | ^^^^^ + | +help: try removing this bound + | +LL - fn f() -> impl Copy + Clone { +LL + fn f() -> impl Copy { + | + +error: this bound is already specified as the supertrait of `Trait2` + --> $DIR/implied_bounds_in_impls.rs:107:21 + | +LL | fn f2() -> impl Trait1 + Trait2 {} + | ^^^^^^^^^^^^^^^^^^^^ + | +help: try removing this bound + | +LL - fn f2() -> impl Trait1 + Trait2 {} +LL + fn f2() -> impl Trait2 {} + | + +error: this bound is already specified as the supertrait of `Trait4` + --> $DIR/implied_bounds_in_impls.rs:122:21 + | +LL | fn f3() -> impl Trait3 + Trait4 {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: try removing this bound + | +LL - fn f3() -> impl Trait3 + Trait4 {} +LL + fn f3() -> impl Trait4 {} + | + +error: aborting due to 16 previous errors diff --git a/tests/ui/iter_out_of_bounds.rs b/tests/ui/iter_out_of_bounds.rs new file mode 100644 index 000000000..3cfe6e82f --- /dev/null +++ b/tests/ui/iter_out_of_bounds.rs @@ -0,0 +1,71 @@ +//@no-rustfix + +#![deny(clippy::iter_out_of_bounds)] +#![allow(clippy::useless_vec)] + +fn opaque_empty_iter() -> impl Iterator { + std::iter::empty() +} + +fn main() { + #[allow(clippy::never_loop)] + for _ in [1, 2, 3].iter().skip(4) { + //~^ ERROR: this `.skip()` call skips more items than the iterator will produce + unreachable!(); + } + for (i, _) in [1, 2, 3].iter().take(4).enumerate() { + //~^ ERROR: this `.take()` call takes more items than the iterator will produce + assert!(i <= 2); + } + + #[allow(clippy::needless_borrow)] + for _ in (&&&&&&[1, 2, 3]).iter().take(4) {} + //~^ ERROR: this `.take()` call takes more items than the iterator will produce + + for _ in [1, 2, 3].iter().skip(4) {} + //~^ ERROR: this `.skip()` call skips more items than the iterator will produce + + for _ in [1; 3].iter().skip(4) {} + //~^ ERROR: this `.skip()` call skips more items than the iterator will produce + + // Should not lint + for _ in opaque_empty_iter().skip(1) {} + + for _ in vec![1, 2, 3].iter().skip(4) {} + //~^ ERROR: this `.skip()` call skips more items than the iterator will produce + + for _ in vec![1; 3].iter().skip(4) {} + //~^ ERROR: this `.skip()` call skips more items than the iterator will produce + + let x = [1, 2, 3]; + for _ in x.iter().skip(4) {} + //~^ ERROR: this `.skip()` call skips more items than the iterator will produce + + let n = 4; + for _ in x.iter().skip(n) {} + //~^ ERROR: this `.skip()` call skips more items than the iterator will produce + + let empty = std::iter::empty::; + + for _ in empty().skip(1) {} + //~^ ERROR: this `.skip()` call skips more items than the iterator will produce + + for _ in empty().take(1) {} + //~^ ERROR: this `.take()` call takes more items than the iterator will produce + + for _ in std::iter::once(1).skip(2) {} + //~^ ERROR: this `.skip()` call skips more items than the iterator will produce + + for _ in std::iter::once(1).take(2) {} + //~^ ERROR: this `.take()` call takes more items than the iterator will produce + + for x in [].iter().take(1) { + //~^ ERROR: this `.take()` call takes more items than the iterator will produce + let _: &i32 = x; + } + + // ok, not out of bounds + for _ in [1].iter().take(1) {} + for _ in [1, 2, 3].iter().take(2) {} + for _ in [1, 2, 3].iter().skip(2) {} +} diff --git a/tests/ui/iter_out_of_bounds.stderr b/tests/ui/iter_out_of_bounds.stderr new file mode 100644 index 000000000..f235faec8 --- /dev/null +++ b/tests/ui/iter_out_of_bounds.stderr @@ -0,0 +1,119 @@ +error: this `.skip()` call skips more items than the iterator will produce + --> $DIR/iter_out_of_bounds.rs:12:14 + | +LL | for _ in [1, 2, 3].iter().skip(4) { + | ^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: this operation is useless and will create an empty iterator +note: the lint level is defined here + --> $DIR/iter_out_of_bounds.rs:3:9 + | +LL | #![deny(clippy::iter_out_of_bounds)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: this `.take()` call takes more items than the iterator will produce + --> $DIR/iter_out_of_bounds.rs:16:19 + | +LL | for (i, _) in [1, 2, 3].iter().take(4).enumerate() { + | ^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: this operation is useless and the returned iterator will simply yield the same items + +error: this `.take()` call takes more items than the iterator will produce + --> $DIR/iter_out_of_bounds.rs:22:14 + | +LL | for _ in (&&&&&&[1, 2, 3]).iter().take(4) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: this operation is useless and the returned iterator will simply yield the same items + +error: this `.skip()` call skips more items than the iterator will produce + --> $DIR/iter_out_of_bounds.rs:25:14 + | +LL | for _ in [1, 2, 3].iter().skip(4) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: this operation is useless and will create an empty iterator + +error: this `.skip()` call skips more items than the iterator will produce + --> $DIR/iter_out_of_bounds.rs:28:14 + | +LL | for _ in [1; 3].iter().skip(4) {} + | ^^^^^^^^^^^^^^^^^^^^^ + | + = note: this operation is useless and will create an empty iterator + +error: this `.skip()` call skips more items than the iterator will produce + --> $DIR/iter_out_of_bounds.rs:34:14 + | +LL | for _ in vec![1, 2, 3].iter().skip(4) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: this operation is useless and will create an empty iterator + +error: this `.skip()` call skips more items than the iterator will produce + --> $DIR/iter_out_of_bounds.rs:37:14 + | +LL | for _ in vec![1; 3].iter().skip(4) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: this operation is useless and will create an empty iterator + +error: this `.skip()` call skips more items than the iterator will produce + --> $DIR/iter_out_of_bounds.rs:41:14 + | +LL | for _ in x.iter().skip(4) {} + | ^^^^^^^^^^^^^^^^ + | + = note: this operation is useless and will create an empty iterator + +error: this `.skip()` call skips more items than the iterator will produce + --> $DIR/iter_out_of_bounds.rs:45:14 + | +LL | for _ in x.iter().skip(n) {} + | ^^^^^^^^^^^^^^^^ + | + = note: this operation is useless and will create an empty iterator + +error: this `.skip()` call skips more items than the iterator will produce + --> $DIR/iter_out_of_bounds.rs:50:14 + | +LL | for _ in empty().skip(1) {} + | ^^^^^^^^^^^^^^^ + | + = note: this operation is useless and will create an empty iterator + +error: this `.take()` call takes more items than the iterator will produce + --> $DIR/iter_out_of_bounds.rs:53:14 + | +LL | for _ in empty().take(1) {} + | ^^^^^^^^^^^^^^^ + | + = note: this operation is useless and the returned iterator will simply yield the same items + +error: this `.skip()` call skips more items than the iterator will produce + --> $DIR/iter_out_of_bounds.rs:56:14 + | +LL | for _ in std::iter::once(1).skip(2) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: this operation is useless and will create an empty iterator + +error: this `.take()` call takes more items than the iterator will produce + --> $DIR/iter_out_of_bounds.rs:59:14 + | +LL | for _ in std::iter::once(1).take(2) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: this operation is useless and the returned iterator will simply yield the same items + +error: this `.take()` call takes more items than the iterator will produce + --> $DIR/iter_out_of_bounds.rs:62:14 + | +LL | for x in [].iter().take(1) { + | ^^^^^^^^^^^^^^^^^ + | + = note: this operation is useless and the returned iterator will simply yield the same items + +error: aborting due to 14 previous errors + diff --git a/tests/ui/iter_overeager_cloned.fixed b/tests/ui/iter_overeager_cloned.fixed index 9dd046fec..7d8a584b0 100644 --- a/tests/ui/iter_overeager_cloned.fixed +++ b/tests/ui/iter_overeager_cloned.fixed @@ -63,11 +63,9 @@ fn main() { let _ = vec.iter().for_each(|x| assert!(!x.is_empty())); - // Not implemented yet - let _ = vec.iter().cloned().all(|x| x.len() == 1); + let _ = vec.iter().all(|x| x.len() == 1); - // Not implemented yet - let _ = vec.iter().cloned().any(|x| x.len() == 1); + let _ = vec.iter().any(|x| x.len() == 1); // Should probably stay as it is. let _ = [0, 1, 2, 3, 4].iter().cloned().take(10); diff --git a/tests/ui/iter_overeager_cloned.rs b/tests/ui/iter_overeager_cloned.rs index 3cab36695..58c374ab8 100644 --- a/tests/ui/iter_overeager_cloned.rs +++ b/tests/ui/iter_overeager_cloned.rs @@ -64,10 +64,8 @@ fn main() { let _ = vec.iter().cloned().for_each(|x| assert!(!x.is_empty())); - // Not implemented yet let _ = vec.iter().cloned().all(|x| x.len() == 1); - // Not implemented yet let _ = vec.iter().cloned().any(|x| x.len() == 1); // Should probably stay as it is. diff --git a/tests/ui/iter_overeager_cloned.stderr b/tests/ui/iter_overeager_cloned.stderr index fbcd33066..a9a739688 100644 --- a/tests/ui/iter_overeager_cloned.stderr +++ b/tests/ui/iter_overeager_cloned.stderr @@ -148,5 +148,21 @@ LL | let _ = vec.iter().cloned().for_each(|x| assert!(!x.is_empty())); | | | help: try: `.for_each(|x| assert!(!x.is_empty()))` -error: aborting due to 17 previous errors +error: unneeded cloning of iterator items + --> $DIR/iter_overeager_cloned.rs:67:13 + | +LL | let _ = vec.iter().cloned().all(|x| x.len() == 1); + | ^^^^^^^^^^------------------------------- + | | + | help: try: `.all(|x| x.len() == 1)` + +error: unneeded cloning of iterator items + --> $DIR/iter_overeager_cloned.rs:69:13 + | +LL | let _ = vec.iter().cloned().any(|x| x.len() == 1); + | ^^^^^^^^^^------------------------------- + | | + | help: try: `.any(|x| x.len() == 1)` + +error: aborting due to 19 previous errors diff --git a/tests/ui/iter_skip_next.fixed b/tests/ui/iter_skip_next.fixed index 310b24a9c..3e41b3632 100644 --- a/tests/ui/iter_skip_next.fixed +++ b/tests/ui/iter_skip_next.fixed @@ -4,6 +4,7 @@ #![allow(clippy::disallowed_names)] #![allow(clippy::iter_nth)] #![allow(clippy::useless_vec)] +#![allow(clippy::iter_out_of_bounds)] #![allow(unused_mut, dead_code)] extern crate option_helpers; diff --git a/tests/ui/iter_skip_next.rs b/tests/ui/iter_skip_next.rs index 222d6a2a1..6d96441ca 100644 --- a/tests/ui/iter_skip_next.rs +++ b/tests/ui/iter_skip_next.rs @@ -4,6 +4,7 @@ #![allow(clippy::disallowed_names)] #![allow(clippy::iter_nth)] #![allow(clippy::useless_vec)] +#![allow(clippy::iter_out_of_bounds)] #![allow(unused_mut, dead_code)] extern crate option_helpers; diff --git a/tests/ui/iter_skip_next.stderr b/tests/ui/iter_skip_next.stderr index 0b6bf652b..39b173e75 100644 --- a/tests/ui/iter_skip_next.stderr +++ b/tests/ui/iter_skip_next.stderr @@ -1,5 +1,5 @@ error: called `skip(..).next()` on an iterator - --> $DIR/iter_skip_next.rs:16:28 + --> $DIR/iter_skip_next.rs:17:28 | LL | let _ = some_vec.iter().skip(42).next(); | ^^^^^^^^^^^^^^^^ help: use `nth` instead: `.nth(42)` @@ -8,37 +8,37 @@ LL | let _ = some_vec.iter().skip(42).next(); = help: to override `-D warnings` add `#[allow(clippy::iter_skip_next)]` error: called `skip(..).next()` on an iterator - --> $DIR/iter_skip_next.rs:17:36 + --> $DIR/iter_skip_next.rs:18:36 | LL | let _ = some_vec.iter().cycle().skip(42).next(); | ^^^^^^^^^^^^^^^^ help: use `nth` instead: `.nth(42)` error: called `skip(..).next()` on an iterator - --> $DIR/iter_skip_next.rs:18:20 + --> $DIR/iter_skip_next.rs:19:20 | LL | let _ = (1..10).skip(10).next(); | ^^^^^^^^^^^^^^^^ help: use `nth` instead: `.nth(10)` error: called `skip(..).next()` on an iterator - --> $DIR/iter_skip_next.rs:19:33 + --> $DIR/iter_skip_next.rs:20:33 | LL | let _ = &some_vec[..].iter().skip(3).next(); | ^^^^^^^^^^^^^^^ help: use `nth` instead: `.nth(3)` error: called `skip(..).next()` on an iterator - --> $DIR/iter_skip_next.rs:27:26 + --> $DIR/iter_skip_next.rs:28:26 | LL | let _: Vec<&str> = sp.skip(1).next().unwrap().split(' ').collect(); | ^^^^^^^^^^^^^^^ help: use `nth` instead: `.nth(1)` error: called `skip(..).next()` on an iterator - --> $DIR/iter_skip_next.rs:29:29 + --> $DIR/iter_skip_next.rs:30:29 | LL | let _: Vec<&str> = s.skip(1).next().unwrap().split(' ').collect(); | ^^^^^^^^^^^^^^^ help: use `nth` instead: `.nth(1)` error: called `skip(..).next()` on an iterator - --> $DIR/iter_skip_next.rs:35:29 + --> $DIR/iter_skip_next.rs:36:29 | LL | let _: Vec<&str> = s.skip(1).next().unwrap().split(' ').collect(); | ^^^^^^^^^^^^^^^ help: use `nth` instead: `.nth(1)` diff --git a/tests/ui/iter_skip_next_unfixable.rs b/tests/ui/iter_skip_next_unfixable.rs index 9c224f411..6c98bdc8c 100644 --- a/tests/ui/iter_skip_next_unfixable.rs +++ b/tests/ui/iter_skip_next_unfixable.rs @@ -1,5 +1,5 @@ #![warn(clippy::iter_skip_next)] -#![allow(dead_code)] +#![allow(dead_code, clippy::iter_out_of_bounds)] //@no-rustfix /// Checks implementation of `ITER_SKIP_NEXT` lint fn main() { diff --git a/tests/ui/iter_skip_zero.fixed b/tests/ui/iter_skip_zero.fixed index 62a83d590..447d07100 100644 --- a/tests/ui/iter_skip_zero.fixed +++ b/tests/ui/iter_skip_zero.fixed @@ -1,5 +1,5 @@ //@aux-build:proc_macros.rs -#![allow(clippy::useless_vec, unused)] +#![allow(clippy::useless_vec, clippy::iter_out_of_bounds, unused)] #![warn(clippy::iter_skip_zero)] #[macro_use] diff --git a/tests/ui/iter_skip_zero.rs b/tests/ui/iter_skip_zero.rs index c96696dde..ba63c3981 100644 --- a/tests/ui/iter_skip_zero.rs +++ b/tests/ui/iter_skip_zero.rs @@ -1,5 +1,5 @@ //@aux-build:proc_macros.rs -#![allow(clippy::useless_vec, unused)] +#![allow(clippy::useless_vec, clippy::iter_out_of_bounds, unused)] #![warn(clippy::iter_skip_zero)] #[macro_use] diff --git a/tests/ui/large_enum_variant.32bit.stderr b/tests/ui/large_enum_variant.32bit.stderr new file mode 100644 index 000000000..0e0eee21c --- /dev/null +++ b/tests/ui/large_enum_variant.32bit.stderr @@ -0,0 +1,280 @@ +error: large size difference between variants + --> $DIR/large_enum_variant.rs:11:1 + | +LL | / enum LargeEnum { +LL | | A(i32), + | | ------ the second-largest variant contains at least 4 bytes +LL | | B([i32; 8000]), + | | -------------- the largest variant contains at least 32000 bytes +LL | | } + | |_^ the entire enum is at least 32004 bytes + | + = note: `-D clippy::large-enum-variant` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::large_enum_variant)]` +help: consider boxing the large fields to reduce the total size of the enum + | +LL | B(Box<[i32; 8000]>), + | ~~~~~~~~~~~~~~~~ + +error: large size difference between variants + --> $DIR/large_enum_variant.rs:35:1 + | +LL | / enum LargeEnum2 { +LL | | VariantOk(i32, u32), + | | ------------------- the second-largest variant contains at least 8 bytes +LL | | ContainingLargeEnum(LargeEnum), + | | ------------------------------ the largest variant contains at least 32004 bytes +LL | | } + | |_^ the entire enum is at least 32004 bytes + | +help: consider boxing the large fields to reduce the total size of the enum + | +LL | ContainingLargeEnum(Box), + | ~~~~~~~~~~~~~~ + +error: large size difference between variants + --> $DIR/large_enum_variant.rs:40:1 + | +LL | / enum LargeEnum3 { +LL | | ContainingMoreThanOneField(i32, [i32; 8000], [i32; 9500]), + | | --------------------------------------------------------- the largest variant contains at least 70004 bytes +LL | | VoidVariant, +LL | | StructLikeLittle { x: i32, y: i32 }, + | | ----------------------------------- the second-largest variant contains at least 8 bytes +LL | | } + | |_^ the entire enum is at least 70008 bytes + | +help: consider boxing the large fields to reduce the total size of the enum + | +LL | ContainingMoreThanOneField(i32, Box<[i32; 8000]>, Box<[i32; 9500]>), + | ~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~ + +error: large size difference between variants + --> $DIR/large_enum_variant.rs:46:1 + | +LL | / enum LargeEnum4 { +LL | | VariantOk(i32, u32), + | | ------------------- the second-largest variant contains at least 8 bytes +LL | | StructLikeLarge { x: [i32; 8000], y: i32 }, + | | ------------------------------------------ the largest variant contains at least 32004 bytes +LL | | } + | |_^ the entire enum is at least 32008 bytes + | +help: consider boxing the large fields to reduce the total size of the enum + | +LL | StructLikeLarge { x: Box<[i32; 8000]>, y: i32 }, + | ~~~~~~~~~~~~~~~~ + +error: large size difference between variants + --> $DIR/large_enum_variant.rs:51:1 + | +LL | / enum LargeEnum5 { +LL | | VariantOk(i32, u32), + | | ------------------- the second-largest variant contains at least 8 bytes +LL | | StructLikeLarge2 { x: [i32; 8000] }, + | | ----------------------------------- the largest variant contains at least 32000 bytes +LL | | } + | |_^ the entire enum is at least 32004 bytes + | +help: consider boxing the large fields to reduce the total size of the enum + | +LL | StructLikeLarge2 { x: Box<[i32; 8000]> }, + | ~~~~~~~~~~~~~~~~ + +error: large size difference between variants + --> $DIR/large_enum_variant.rs:67:1 + | +LL | / enum LargeEnum7 { +LL | | A, +LL | | B([u8; 1255]), + | | ------------- the largest variant contains at least 1255 bytes +LL | | C([u8; 200]), + | | ------------ the second-largest variant contains at least 200 bytes +LL | | } + | |_^ the entire enum is at least 1256 bytes + | +help: consider boxing the large fields to reduce the total size of the enum + | +LL | B(Box<[u8; 1255]>), + | ~~~~~~~~~~~~~~~ + +error: large size difference between variants + --> $DIR/large_enum_variant.rs:73:1 + | +LL | / enum LargeEnum8 { +LL | | VariantOk(i32, u32), + | | ------------------- the second-largest variant contains at least 8 bytes +LL | | ContainingMoreThanOneField([i32; 8000], [i32; 2], [i32; 9500], [i32; 30]), + | | ------------------------------------------------------------------------- the largest variant contains at least 70128 bytes +LL | | } + | |_^ the entire enum is at least 70132 bytes + | +help: consider boxing the large fields to reduce the total size of the enum + | +LL | ContainingMoreThanOneField(Box<[i32; 8000]>, [i32; 2], Box<[i32; 9500]>, [i32; 30]), + | ~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~ + +error: large size difference between variants + --> $DIR/large_enum_variant.rs:78:1 + | +LL | / enum LargeEnum9 { +LL | | A(Struct<()>), + | | ------------- the second-largest variant contains at least 4 bytes +LL | | B(Struct2), + | | ---------- the largest variant contains at least 32000 bytes +LL | | } + | |_^ the entire enum is at least 32004 bytes + | +help: consider boxing the large fields to reduce the total size of the enum + | +LL | B(Box), + | ~~~~~~~~~~~~ + +error: large size difference between variants + --> $DIR/large_enum_variant.rs:83:1 + | +LL | / enum LargeEnumOk2 { +LL | | A(T), + | | ---- the second-largest variant contains at least 0 bytes +LL | | B(Struct2), + | | ---------- the largest variant contains at least 32000 bytes +LL | | } + | |_^ the entire enum is at least 32000 bytes + | +help: consider boxing the large fields to reduce the total size of the enum + | +LL | B(Box), + | ~~~~~~~~~~~~ + +error: large size difference between variants + --> $DIR/large_enum_variant.rs:88:1 + | +LL | / enum LargeEnumOk3 { +LL | | A(Struct), + | | ------------ the second-largest variant contains at least 4 bytes +LL | | B(Struct2), + | | ---------- the largest variant contains at least 32000 bytes +LL | | } + | |_^ the entire enum is at least 32000 bytes + | +help: consider boxing the large fields to reduce the total size of the enum + | +LL | B(Box), + | ~~~~~~~~~~~~ + +error: large size difference between variants + --> $DIR/large_enum_variant.rs:103:1 + | +LL | / enum CopyableLargeEnum { +LL | | A(bool), + | | ------- the second-largest variant contains at least 1 bytes +LL | | B([u64; 8000]), + | | -------------- the largest variant contains at least 64000 bytes +LL | | } + | |_^ the entire enum is at least 64004 bytes + | +note: boxing a variant would require the type no longer be `Copy` + --> $DIR/large_enum_variant.rs:103:6 + | +LL | enum CopyableLargeEnum { + | ^^^^^^^^^^^^^^^^^ +help: consider boxing the large fields to reduce the total size of the enum + --> $DIR/large_enum_variant.rs:105:5 + | +LL | B([u64; 8000]), + | ^^^^^^^^^^^^^^ + +error: large size difference between variants + --> $DIR/large_enum_variant.rs:108:1 + | +LL | / enum ManuallyCopyLargeEnum { +LL | | A(bool), + | | ------- the second-largest variant contains at least 1 bytes +LL | | B([u64; 8000]), + | | -------------- the largest variant contains at least 64000 bytes +LL | | } + | |_^ the entire enum is at least 64004 bytes + | +note: boxing a variant would require the type no longer be `Copy` + --> $DIR/large_enum_variant.rs:108:6 + | +LL | enum ManuallyCopyLargeEnum { + | ^^^^^^^^^^^^^^^^^^^^^ +help: consider boxing the large fields to reduce the total size of the enum + --> $DIR/large_enum_variant.rs:110:5 + | +LL | B([u64; 8000]), + | ^^^^^^^^^^^^^^ + +error: large size difference between variants + --> $DIR/large_enum_variant.rs:121:1 + | +LL | / enum SomeGenericPossiblyCopyEnum { +LL | | A(bool, std::marker::PhantomData), + | | ------------------------------------ the second-largest variant contains at least 1 bytes +LL | | B([u64; 4000]), + | | -------------- the largest variant contains at least 32000 bytes +LL | | } + | |_^ the entire enum is at least 32004 bytes + | +note: boxing a variant would require the type no longer be `Copy` + --> $DIR/large_enum_variant.rs:121:6 + | +LL | enum SomeGenericPossiblyCopyEnum { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ +help: consider boxing the large fields to reduce the total size of the enum + --> $DIR/large_enum_variant.rs:123:5 + | +LL | B([u64; 4000]), + | ^^^^^^^^^^^^^^ + +error: large size difference between variants + --> $DIR/large_enum_variant.rs:134:1 + | +LL | / enum LargeEnumWithGenerics { +LL | | Small, + | | ----- the second-largest variant carries no data at all +LL | | Large((T, [u8; 512])), + | | --------------------- the largest variant contains at least 512 bytes +LL | | } + | |_^ the entire enum is at least 512 bytes + | +help: consider boxing the large fields to reduce the total size of the enum + | +LL | Large(Box<(T, [u8; 512])>), + | ~~~~~~~~~~~~~~~~~~~ + +error: large size difference between variants + --> $DIR/large_enum_variant.rs:143:1 + | +LL | / enum WithGenerics { +LL | | Large([Foo; 64]), + | | --------------------- the largest variant contains at least 512 bytes +LL | | Small(u8), + | | --------- the second-largest variant contains at least 1 bytes +LL | | } + | |_^ the entire enum is at least 516 bytes + | +help: consider boxing the large fields to reduce the total size of the enum + | +LL | Large(Box<[Foo; 64]>), + | ~~~~~~~~~~~~~~~~~~~ + +error: large size difference between variants + --> $DIR/large_enum_variant.rs:153:1 + | +LL | / enum LargeEnumOfConst { +LL | | Ok, + | | -- the second-largest variant carries no data at all +LL | | Error(PossiblyLargeEnumWithConst<256>), + | | -------------------------------------- the largest variant contains at least 514 bytes +LL | | } + | |_^ the entire enum is at least 514 bytes + | +help: consider boxing the large fields to reduce the total size of the enum + | +LL | Error(Box>), + | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +error: aborting due to 16 previous errors + diff --git a/tests/ui/large_enum_variant.stderr b/tests/ui/large_enum_variant.64bit.stderr similarity index 91% rename from tests/ui/large_enum_variant.stderr rename to tests/ui/large_enum_variant.64bit.stderr index 7026ca785..3eba43e05 100644 --- a/tests/ui/large_enum_variant.stderr +++ b/tests/ui/large_enum_variant.64bit.stderr @@ -1,5 +1,5 @@ error: large size difference between variants - --> $DIR/large_enum_variant.rs:10:1 + --> $DIR/large_enum_variant.rs:11:1 | LL | / enum LargeEnum { LL | | A(i32), @@ -17,7 +17,7 @@ LL | B(Box<[i32; 8000]>), | ~~~~~~~~~~~~~~~~ error: large size difference between variants - --> $DIR/large_enum_variant.rs:34:1 + --> $DIR/large_enum_variant.rs:35:1 | LL | / enum LargeEnum2 { LL | | VariantOk(i32, u32), @@ -33,7 +33,7 @@ LL | ContainingLargeEnum(Box), | ~~~~~~~~~~~~~~ error: large size difference between variants - --> $DIR/large_enum_variant.rs:39:1 + --> $DIR/large_enum_variant.rs:40:1 | LL | / enum LargeEnum3 { LL | | ContainingMoreThanOneField(i32, [i32; 8000], [i32; 9500]), @@ -50,7 +50,7 @@ LL | ContainingMoreThanOneField(i32, Box<[i32; 8000]>, Box<[i32; 9500]>), | ~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~ error: large size difference between variants - --> $DIR/large_enum_variant.rs:45:1 + --> $DIR/large_enum_variant.rs:46:1 | LL | / enum LargeEnum4 { LL | | VariantOk(i32, u32), @@ -66,7 +66,7 @@ LL | StructLikeLarge { x: Box<[i32; 8000]>, y: i32 }, | ~~~~~~~~~~~~~~~~ error: large size difference between variants - --> $DIR/large_enum_variant.rs:50:1 + --> $DIR/large_enum_variant.rs:51:1 | LL | / enum LargeEnum5 { LL | | VariantOk(i32, u32), @@ -82,7 +82,7 @@ LL | StructLikeLarge2 { x: Box<[i32; 8000]> }, | ~~~~~~~~~~~~~~~~ error: large size difference between variants - --> $DIR/large_enum_variant.rs:66:1 + --> $DIR/large_enum_variant.rs:67:1 | LL | / enum LargeEnum7 { LL | | A, @@ -99,7 +99,7 @@ LL | B(Box<[u8; 1255]>), | ~~~~~~~~~~~~~~~ error: large size difference between variants - --> $DIR/large_enum_variant.rs:72:1 + --> $DIR/large_enum_variant.rs:73:1 | LL | / enum LargeEnum8 { LL | | VariantOk(i32, u32), @@ -115,7 +115,7 @@ LL | ContainingMoreThanOneField(Box<[i32; 8000]>, [i32; 2], Box<[i32; 9500]> | ~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~ error: large size difference between variants - --> $DIR/large_enum_variant.rs:77:1 + --> $DIR/large_enum_variant.rs:78:1 | LL | / enum LargeEnum9 { LL | | A(Struct<()>), @@ -131,7 +131,7 @@ LL | B(Box), | ~~~~~~~~~~~~ error: large size difference between variants - --> $DIR/large_enum_variant.rs:82:1 + --> $DIR/large_enum_variant.rs:83:1 | LL | / enum LargeEnumOk2 { LL | | A(T), @@ -147,7 +147,7 @@ LL | B(Box), | ~~~~~~~~~~~~ error: large size difference between variants - --> $DIR/large_enum_variant.rs:87:1 + --> $DIR/large_enum_variant.rs:88:1 | LL | / enum LargeEnumOk3 { LL | | A(Struct), @@ -163,7 +163,7 @@ LL | B(Box), | ~~~~~~~~~~~~ error: large size difference between variants - --> $DIR/large_enum_variant.rs:102:1 + --> $DIR/large_enum_variant.rs:103:1 | LL | / enum CopyableLargeEnum { LL | | A(bool), @@ -174,18 +174,18 @@ LL | | } | |_^ the entire enum is at least 64008 bytes | note: boxing a variant would require the type no longer be `Copy` - --> $DIR/large_enum_variant.rs:102:6 + --> $DIR/large_enum_variant.rs:103:6 | LL | enum CopyableLargeEnum { | ^^^^^^^^^^^^^^^^^ help: consider boxing the large fields to reduce the total size of the enum - --> $DIR/large_enum_variant.rs:104:5 + --> $DIR/large_enum_variant.rs:105:5 | LL | B([u64; 8000]), | ^^^^^^^^^^^^^^ error: large size difference between variants - --> $DIR/large_enum_variant.rs:107:1 + --> $DIR/large_enum_variant.rs:108:1 | LL | / enum ManuallyCopyLargeEnum { LL | | A(bool), @@ -196,18 +196,18 @@ LL | | } | |_^ the entire enum is at least 64008 bytes | note: boxing a variant would require the type no longer be `Copy` - --> $DIR/large_enum_variant.rs:107:6 + --> $DIR/large_enum_variant.rs:108:6 | LL | enum ManuallyCopyLargeEnum { | ^^^^^^^^^^^^^^^^^^^^^ help: consider boxing the large fields to reduce the total size of the enum - --> $DIR/large_enum_variant.rs:109:5 + --> $DIR/large_enum_variant.rs:110:5 | LL | B([u64; 8000]), | ^^^^^^^^^^^^^^ error: large size difference between variants - --> $DIR/large_enum_variant.rs:120:1 + --> $DIR/large_enum_variant.rs:121:1 | LL | / enum SomeGenericPossiblyCopyEnum { LL | | A(bool, std::marker::PhantomData), @@ -218,18 +218,18 @@ LL | | } | |_^ the entire enum is at least 32008 bytes | note: boxing a variant would require the type no longer be `Copy` - --> $DIR/large_enum_variant.rs:120:6 + --> $DIR/large_enum_variant.rs:121:6 | LL | enum SomeGenericPossiblyCopyEnum { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider boxing the large fields to reduce the total size of the enum - --> $DIR/large_enum_variant.rs:122:5 + --> $DIR/large_enum_variant.rs:123:5 | LL | B([u64; 4000]), | ^^^^^^^^^^^^^^ error: large size difference between variants - --> $DIR/large_enum_variant.rs:133:1 + --> $DIR/large_enum_variant.rs:134:1 | LL | / enum LargeEnumWithGenerics { LL | | Small, @@ -245,7 +245,7 @@ LL | Large(Box<(T, [u8; 512])>), | ~~~~~~~~~~~~~~~~~~~ error: large size difference between variants - --> $DIR/large_enum_variant.rs:142:1 + --> $DIR/large_enum_variant.rs:143:1 | LL | / enum WithGenerics { LL | | Large([Foo; 64]), @@ -261,7 +261,7 @@ LL | Large(Box<[Foo; 64]>), | ~~~~~~~~~~~~~~~~~~~ error: large size difference between variants - --> $DIR/large_enum_variant.rs:152:1 + --> $DIR/large_enum_variant.rs:153:1 | LL | / enum LargeEnumOfConst { LL | | Ok, diff --git a/tests/ui/large_enum_variant.rs b/tests/ui/large_enum_variant.rs index f101bda76..3625c011d 100644 --- a/tests/ui/large_enum_variant.rs +++ b/tests/ui/large_enum_variant.rs @@ -1,3 +1,4 @@ +//@stderr-per-bitwidth //@aux-build:proc_macros.rs //@no-rustfix #![allow(dead_code)] diff --git a/tests/ui/manual_range_patterns.fixed b/tests/ui/manual_range_patterns.fixed index ea06e27d1..b348d7071 100644 --- a/tests/ui/manual_range_patterns.fixed +++ b/tests/ui/manual_range_patterns.fixed @@ -13,8 +13,8 @@ fn main() { let _ = matches!(f, 1 | 2147483647); let _ = matches!(f, 0 | 2147483647); let _ = matches!(f, -2147483647 | 2147483647); - let _ = matches!(f, 1 | (2..=4)); - let _ = matches!(f, 1 | (2..4)); + let _ = matches!(f, 1..=4); + let _ = matches!(f, 1..4); let _ = matches!(f, 1..=48324729); let _ = matches!(f, 0..=48324730); let _ = matches!(f, 0..=3); @@ -25,9 +25,20 @@ fn main() { }; let _ = matches!(f, -5..=3); let _ = matches!(f, -1 | -5 | 3 | -2 | -4 | -3 | 0 | 1); // 2 is missing - let _ = matches!(f, -1000001..=1000001); + let _ = matches!(f, -1_000_001..=1_000_001); let _ = matches!(f, -1_000_000..=1_000_000 | -1_000_001 | 1_000_002); + matches!(f, 0x00..=0x03); + matches!(f, 0x00..=0x07); + matches!(f, -0x09..=0x00); + + matches!(f, 0..=5); + matches!(f, 0..5); + + matches!(f, 0..10); + matches!(f, 0..=10); + matches!(f, 0..=10); + macro_rules! mac { ($e:expr) => { matches!($e, 1..=10) diff --git a/tests/ui/manual_range_patterns.rs b/tests/ui/manual_range_patterns.rs index eb29987b8..a0750f54b 100644 --- a/tests/ui/manual_range_patterns.rs +++ b/tests/ui/manual_range_patterns.rs @@ -28,6 +28,17 @@ fn main() { let _ = matches!(f, -1_000_000..=1_000_000 | -1_000_001 | 1_000_001); let _ = matches!(f, -1_000_000..=1_000_000 | -1_000_001 | 1_000_002); + matches!(f, 0x00 | 0x01 | 0x02 | 0x03); + matches!(f, 0x00..=0x05 | 0x06 | 0x07); + matches!(f, -0x09 | -0x08 | -0x07..=0x00); + + matches!(f, 0..5 | 5); + matches!(f, 0 | 1..5); + + matches!(f, 0..=5 | 6..10); + matches!(f, 0..5 | 5..=10); + matches!(f, 5..=10 | 0..5); + macro_rules! mac { ($e:expr) => { matches!($e, 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10) diff --git a/tests/ui/manual_range_patterns.stderr b/tests/ui/manual_range_patterns.stderr index 3eee39af8..fbeb94557 100644 --- a/tests/ui/manual_range_patterns.stderr +++ b/tests/ui/manual_range_patterns.stderr @@ -13,6 +13,18 @@ error: this OR pattern can be rewritten using a range LL | let _ = matches!(f, 4 | 2 | 3 | 1 | 5 | 6 | 9 | 7 | 8 | 10); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `1..=10` +error: this OR pattern can be rewritten using a range + --> $DIR/manual_range_patterns.rs:16:25 + | +LL | let _ = matches!(f, 1 | (2..=4)); + | ^^^^^^^^^^^ help: try: `1..=4` + +error: this OR pattern can be rewritten using a range + --> $DIR/manual_range_patterns.rs:17:25 + | +LL | let _ = matches!(f, 1 | (2..4)); + | ^^^^^^^^^^ help: try: `1..4` + error: this OR pattern can be rewritten using a range --> $DIR/manual_range_patterns.rs:18:25 | @@ -47,10 +59,58 @@ error: this OR pattern can be rewritten using a range --> $DIR/manual_range_patterns.rs:28:25 | LL | let _ = matches!(f, -1_000_000..=1_000_000 | -1_000_001 | 1_000_001); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `-1000001..=1000001` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `-1_000_001..=1_000_001` error: this OR pattern can be rewritten using a range - --> $DIR/manual_range_patterns.rs:33:26 + --> $DIR/manual_range_patterns.rs:31:17 + | +LL | matches!(f, 0x00 | 0x01 | 0x02 | 0x03); + | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `0x00..=0x03` + +error: this OR pattern can be rewritten using a range + --> $DIR/manual_range_patterns.rs:32:17 + | +LL | matches!(f, 0x00..=0x05 | 0x06 | 0x07); + | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `0x00..=0x07` + +error: this OR pattern can be rewritten using a range + --> $DIR/manual_range_patterns.rs:33:17 + | +LL | matches!(f, -0x09 | -0x08 | -0x07..=0x00); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `-0x09..=0x00` + +error: this OR pattern can be rewritten using a range + --> $DIR/manual_range_patterns.rs:35:17 + | +LL | matches!(f, 0..5 | 5); + | ^^^^^^^^ help: try: `0..=5` + +error: this OR pattern can be rewritten using a range + --> $DIR/manual_range_patterns.rs:36:17 + | +LL | matches!(f, 0 | 1..5); + | ^^^^^^^^ help: try: `0..5` + +error: this OR pattern can be rewritten using a range + --> $DIR/manual_range_patterns.rs:38:17 + | +LL | matches!(f, 0..=5 | 6..10); + | ^^^^^^^^^^^^^ help: try: `0..10` + +error: this OR pattern can be rewritten using a range + --> $DIR/manual_range_patterns.rs:39:17 + | +LL | matches!(f, 0..5 | 5..=10); + | ^^^^^^^^^^^^^ help: try: `0..=10` + +error: this OR pattern can be rewritten using a range + --> $DIR/manual_range_patterns.rs:40:17 + | +LL | matches!(f, 5..=10 | 0..5); + | ^^^^^^^^^^^^^ help: try: `0..=10` + +error: this OR pattern can be rewritten using a range + --> $DIR/manual_range_patterns.rs:44:26 | LL | matches!($e, 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `1..=10` @@ -60,5 +120,5 @@ LL | mac!(f); | = note: this error originates in the macro `mac` (in Nightly builds, run with -Z macro-backtrace for more info) -error: aborting due to 9 previous errors +error: aborting due to 19 previous errors diff --git a/tests/ui/missing_asserts_for_indexing.fixed b/tests/ui/missing_asserts_for_indexing.fixed new file mode 100644 index 000000000..a96827259 --- /dev/null +++ b/tests/ui/missing_asserts_for_indexing.fixed @@ -0,0 +1,121 @@ +#![allow(unused)] +#![warn(clippy::missing_asserts_for_indexing)] + +// ok +fn sum_with_assert(v: &[u8]) -> u8 { + assert!(v.len() > 4); + v[0] + v[1] + v[2] + v[3] + v[4] +} + +// ok +fn sum_with_assert_other_way(v: &[u8]) -> u8 { + assert!(5 <= v.len()); + v[0] + v[1] + v[2] + v[3] + v[4] +} + +// ok +fn sum_with_assert_ge(v: &[u8]) -> u8 { + assert!(v.len() >= 5); + v[0] + v[1] + v[2] + v[3] + v[4] +} + +// ok +fn sum_with_assert_ge_other_way(v: &[u8]) -> u8 { + assert!(4 < v.len()); + v[0] + v[1] + v[2] + v[3] + v[4] +} + +fn sum_with_assert_lt(v: &[u8]) -> u8 { + assert!(v.len() > 4); + v[0] + v[1] + v[2] + v[3] + v[4] + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the +} + +fn sum_with_assert_le(v: &[u8]) -> u8 { + assert!(v.len() > 4); + v[0] + v[1] + v[2] + v[3] + v[4] + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the +} + +fn sum_with_incorrect_assert_len(v: &[u8]) -> u8 { + assert!(v.len() > 4); + v[0] + v[1] + v[2] + v[3] + v[4] + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the +} + +fn sum_with_incorrect_assert_len2(v: &[u8]) -> u8 { + assert!(v.len() > 4); + v[0] + v[1] + v[2] + v[3] + v[4] + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the +} + +// ok, don't lint for single array access +fn single_access(v: &[u8]) -> u8 { + v[0] +} + +// ok +fn subslice_ok(v: &[u8]) { + assert!(v.len() > 3); + let _ = v[0]; + let _ = v[1..4]; +} + +fn subslice_bad(v: &[u8]) { + assert!(v.len() > 3); + let _ = v[0]; + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the + let _ = v[1..4]; +} + +// ok +fn subslice_inclusive_ok(v: &[u8]) { + assert!(v.len() > 4); + let _ = v[0]; + let _ = v[1..=4]; +} + +fn subslice_inclusive_bad(v: &[u8]) { + assert!(v.len() > 4); + let _ = v[0]; + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the + let _ = v[1..=4]; +} + +fn index_different_slices_ok(v1: &[u8], v2: &[u8]) { + assert!(v1.len() > 12); + assert!(v2.len() > 15); + let _ = v1[0] + v1[12]; + let _ = v2[5] + v2[15]; +} + +fn index_different_slices_wrong_len(v1: &[u8], v2: &[u8]) { + assert!(v1.len() > 12); + assert!(v2.len() > 15); + let _ = v1[0] + v1[12]; + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the + let _ = v2[5] + v2[15]; + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the +} +fn index_different_slices_one_wrong_len(v1: &[u8], v2: &[u8]) { + assert!(v1.len() > 12); + assert!(v2.len() > 15); + let _ = v1[0] + v1[12]; + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the + let _ = v2[5] + v2[15]; +} + +fn side_effect() -> &'static [u8] { + &[] +} + +fn index_side_effect_expr() { + let _ = side_effect()[0] + side_effect()[1]; +} + +// ok, single access for different slices +fn index_different_slice_in_same_expr(v1: &[u8], v2: &[u8]) { + let _ = v1[0] + v2[1]; +} + +fn main() {} diff --git a/tests/ui/missing_asserts_for_indexing.rs b/tests/ui/missing_asserts_for_indexing.rs new file mode 100644 index 000000000..0b4b883ac --- /dev/null +++ b/tests/ui/missing_asserts_for_indexing.rs @@ -0,0 +1,121 @@ +#![allow(unused)] +#![warn(clippy::missing_asserts_for_indexing)] + +// ok +fn sum_with_assert(v: &[u8]) -> u8 { + assert!(v.len() > 4); + v[0] + v[1] + v[2] + v[3] + v[4] +} + +// ok +fn sum_with_assert_other_way(v: &[u8]) -> u8 { + assert!(5 <= v.len()); + v[0] + v[1] + v[2] + v[3] + v[4] +} + +// ok +fn sum_with_assert_ge(v: &[u8]) -> u8 { + assert!(v.len() >= 5); + v[0] + v[1] + v[2] + v[3] + v[4] +} + +// ok +fn sum_with_assert_ge_other_way(v: &[u8]) -> u8 { + assert!(4 < v.len()); + v[0] + v[1] + v[2] + v[3] + v[4] +} + +fn sum_with_assert_lt(v: &[u8]) -> u8 { + assert!(v.len() < 5); + v[0] + v[1] + v[2] + v[3] + v[4] + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the +} + +fn sum_with_assert_le(v: &[u8]) -> u8 { + assert!(v.len() <= 5); + v[0] + v[1] + v[2] + v[3] + v[4] + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the +} + +fn sum_with_incorrect_assert_len(v: &[u8]) -> u8 { + assert!(v.len() > 3); + v[0] + v[1] + v[2] + v[3] + v[4] + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the +} + +fn sum_with_incorrect_assert_len2(v: &[u8]) -> u8 { + assert!(v.len() >= 4); + v[0] + v[1] + v[2] + v[3] + v[4] + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the +} + +// ok, don't lint for single array access +fn single_access(v: &[u8]) -> u8 { + v[0] +} + +// ok +fn subslice_ok(v: &[u8]) { + assert!(v.len() > 3); + let _ = v[0]; + let _ = v[1..4]; +} + +fn subslice_bad(v: &[u8]) { + assert!(v.len() >= 3); + let _ = v[0]; + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the + let _ = v[1..4]; +} + +// ok +fn subslice_inclusive_ok(v: &[u8]) { + assert!(v.len() > 4); + let _ = v[0]; + let _ = v[1..=4]; +} + +fn subslice_inclusive_bad(v: &[u8]) { + assert!(v.len() >= 4); + let _ = v[0]; + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the + let _ = v[1..=4]; +} + +fn index_different_slices_ok(v1: &[u8], v2: &[u8]) { + assert!(v1.len() > 12); + assert!(v2.len() > 15); + let _ = v1[0] + v1[12]; + let _ = v2[5] + v2[15]; +} + +fn index_different_slices_wrong_len(v1: &[u8], v2: &[u8]) { + assert!(v1.len() >= 12); + assert!(v2.len() >= 15); + let _ = v1[0] + v1[12]; + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the + let _ = v2[5] + v2[15]; + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the +} +fn index_different_slices_one_wrong_len(v1: &[u8], v2: &[u8]) { + assert!(v1.len() >= 12); + assert!(v2.len() > 15); + let _ = v1[0] + v1[12]; + //~^ ERROR: indexing into a slice multiple times with an `assert` that does not cover the + let _ = v2[5] + v2[15]; +} + +fn side_effect() -> &'static [u8] { + &[] +} + +fn index_side_effect_expr() { + let _ = side_effect()[0] + side_effect()[1]; +} + +// ok, single access for different slices +fn index_different_slice_in_same_expr(v1: &[u8], v2: &[u8]) { + let _ = v1[0] + v2[1]; +} + +fn main() {} diff --git a/tests/ui/missing_asserts_for_indexing.stderr b/tests/ui/missing_asserts_for_indexing.stderr new file mode 100644 index 000000000..a3e66d795 --- /dev/null +++ b/tests/ui/missing_asserts_for_indexing.stderr @@ -0,0 +1,253 @@ +error: indexing into a slice multiple times with an `assert` that does not cover the highest index + --> $DIR/missing_asserts_for_indexing.rs:30:5 + | +LL | assert!(v.len() < 5); + | -------------------- help: provide the highest index that is indexed with: `assert!(v.len() > 4)` +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:30:5 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:30:12 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:30:19 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:30:26 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:30:33 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ + = note: asserting the length before indexing will elide bounds checks + = note: `-D clippy::missing-asserts-for-indexing` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::missing_asserts_for_indexing)]` + +error: indexing into a slice multiple times with an `assert` that does not cover the highest index + --> $DIR/missing_asserts_for_indexing.rs:36:5 + | +LL | assert!(v.len() <= 5); + | --------------------- help: provide the highest index that is indexed with: `assert!(v.len() > 4)` +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:36:5 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:36:12 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:36:19 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:36:26 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:36:33 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: indexing into a slice multiple times with an `assert` that does not cover the highest index + --> $DIR/missing_asserts_for_indexing.rs:42:5 + | +LL | assert!(v.len() > 3); + | -------------------- help: provide the highest index that is indexed with: `assert!(v.len() > 4)` +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:42:5 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:42:12 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:42:19 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:42:26 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:42:33 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: indexing into a slice multiple times with an `assert` that does not cover the highest index + --> $DIR/missing_asserts_for_indexing.rs:48:5 + | +LL | assert!(v.len() >= 4); + | --------------------- help: provide the highest index that is indexed with: `assert!(v.len() > 4)` +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:48:5 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:48:12 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:48:19 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:48:26 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:48:33 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: indexing into a slice multiple times with an `assert` that does not cover the highest index + --> $DIR/missing_asserts_for_indexing.rs:66:13 + | +LL | assert!(v.len() >= 3); + | --------------------- help: provide the highest index that is indexed with: `assert!(v.len() > 3)` +LL | let _ = v[0]; + | _____________^ +LL | | +LL | | let _ = v[1..4]; + | |___________________^ + | +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:66:13 + | +LL | let _ = v[0]; + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:68:13 + | +LL | let _ = v[1..4]; + | ^^^^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: indexing into a slice multiple times with an `assert` that does not cover the highest index + --> $DIR/missing_asserts_for_indexing.rs:80:13 + | +LL | assert!(v.len() >= 4); + | --------------------- help: provide the highest index that is indexed with: `assert!(v.len() > 4)` +LL | let _ = v[0]; + | _____________^ +LL | | +LL | | let _ = v[1..=4]; + | |____________________^ + | +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:80:13 + | +LL | let _ = v[0]; + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:82:13 + | +LL | let _ = v[1..=4]; + | ^^^^^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: indexing into a slice multiple times with an `assert` that does not cover the highest index + --> $DIR/missing_asserts_for_indexing.rs:95:13 + | +LL | assert!(v1.len() >= 12); + | ----------------------- help: provide the highest index that is indexed with: `assert!(v1.len() > 12)` +LL | assert!(v2.len() >= 15); +LL | let _ = v1[0] + v1[12]; + | ^^^^^^^^^^^^^^ + | +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:95:13 + | +LL | let _ = v1[0] + v1[12]; + | ^^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:95:21 + | +LL | let _ = v1[0] + v1[12]; + | ^^^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: indexing into a slice multiple times with an `assert` that does not cover the highest index + --> $DIR/missing_asserts_for_indexing.rs:97:13 + | +LL | assert!(v2.len() >= 15); + | ----------------------- help: provide the highest index that is indexed with: `assert!(v2.len() > 15)` +... +LL | let _ = v2[5] + v2[15]; + | ^^^^^^^^^^^^^^ + | +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:97:13 + | +LL | let _ = v2[5] + v2[15]; + | ^^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:97:21 + | +LL | let _ = v2[5] + v2[15]; + | ^^^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: indexing into a slice multiple times with an `assert` that does not cover the highest index + --> $DIR/missing_asserts_for_indexing.rs:103:13 + | +LL | assert!(v1.len() >= 12); + | ----------------------- help: provide the highest index that is indexed with: `assert!(v1.len() > 12)` +LL | assert!(v2.len() > 15); +LL | let _ = v1[0] + v1[12]; + | ^^^^^^^^^^^^^^ + | +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:103:13 + | +LL | let _ = v1[0] + v1[12]; + | ^^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing.rs:103:21 + | +LL | let _ = v1[0] + v1[12]; + | ^^^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: aborting due to 9 previous errors + diff --git a/tests/ui/missing_asserts_for_indexing_unfixable.rs b/tests/ui/missing_asserts_for_indexing_unfixable.rs new file mode 100644 index 000000000..4346ed892 --- /dev/null +++ b/tests/ui/missing_asserts_for_indexing_unfixable.rs @@ -0,0 +1,49 @@ +#![allow(unused)] +#![warn(clippy::missing_asserts_for_indexing)] + +fn sum(v: &[u8]) -> u8 { + v[0] + v[1] + v[2] + v[3] + v[4] + //~^ ERROR: indexing into a slice multiple times without an `assert` +} + +fn subslice(v: &[u8]) { + let _ = v[0]; + //~^ ERROR: indexing into a slice multiple times without an `assert` + let _ = v[1..4]; +} + +fn variables(v: &[u8]) -> u8 { + let a = v[0]; + //~^ ERROR: indexing into a slice multiple times without an `assert` + let b = v[1]; + let c = v[2]; + a + b + c +} + +fn index_different_slices(v1: &[u8], v2: &[u8]) { + let _ = v1[0] + v1[12]; + let _ = v2[5] + v2[15]; +} + +fn index_different_slices2(v1: &[u8], v2: &[u8]) { + assert!(v1.len() > 12); + let _ = v1[0] + v1[12]; + let _ = v2[5] + v2[15]; +} + +struct Foo<'a> { + v: &'a [u8], + v2: &'a [u8], +} + +fn index_struct_field(f: &Foo<'_>) { + let _ = f.v[0] + f.v[1]; + //~^ ERROR: indexing into a slice multiple times without an `assert` +} + +fn index_struct_different_fields(f: &Foo<'_>) { + // ok, different fields + let _ = f.v[0] + f.v2[1]; +} + +fn main() {} diff --git a/tests/ui/missing_asserts_for_indexing_unfixable.stderr b/tests/ui/missing_asserts_for_indexing_unfixable.stderr new file mode 100644 index 000000000..12c9eed5d --- /dev/null +++ b/tests/ui/missing_asserts_for_indexing_unfixable.stderr @@ -0,0 +1,164 @@ +error: indexing into a slice multiple times without an `assert` + --> $DIR/missing_asserts_for_indexing_unfixable.rs:5:5 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: consider asserting the length before indexing: `assert!(v.len() > 4);` +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:5:5 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:5:12 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:5:19 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:5:26 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:5:33 + | +LL | v[0] + v[1] + v[2] + v[3] + v[4] + | ^^^^ + = note: asserting the length before indexing will elide bounds checks + = note: `-D clippy::missing-asserts-for-indexing` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::missing_asserts_for_indexing)]` + +error: indexing into a slice multiple times without an `assert` + --> $DIR/missing_asserts_for_indexing_unfixable.rs:10:13 + | +LL | let _ = v[0]; + | _____________^ +LL | | +LL | | let _ = v[1..4]; + | |___________________^ + | + = help: consider asserting the length before indexing: `assert!(v.len() > 3);` +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:10:13 + | +LL | let _ = v[0]; + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:12:13 + | +LL | let _ = v[1..4]; + | ^^^^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: indexing into a slice multiple times without an `assert` + --> $DIR/missing_asserts_for_indexing_unfixable.rs:16:13 + | +LL | let a = v[0]; + | _____________^ +LL | | +LL | | let b = v[1]; +LL | | let c = v[2]; + | |________________^ + | + = help: consider asserting the length before indexing: `assert!(v.len() > 2);` +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:16:13 + | +LL | let a = v[0]; + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:18:13 + | +LL | let b = v[1]; + | ^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:19:13 + | +LL | let c = v[2]; + | ^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: indexing into a slice multiple times without an `assert` + --> $DIR/missing_asserts_for_indexing_unfixable.rs:24:13 + | +LL | let _ = v1[0] + v1[12]; + | ^^^^^^^^^^^^^^ + | + = help: consider asserting the length before indexing: `assert!(v1.len() > 12);` +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:24:13 + | +LL | let _ = v1[0] + v1[12]; + | ^^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:24:21 + | +LL | let _ = v1[0] + v1[12]; + | ^^^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: indexing into a slice multiple times without an `assert` + --> $DIR/missing_asserts_for_indexing_unfixable.rs:25:13 + | +LL | let _ = v2[5] + v2[15]; + | ^^^^^^^^^^^^^^ + | + = help: consider asserting the length before indexing: `assert!(v2.len() > 15);` +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:25:13 + | +LL | let _ = v2[5] + v2[15]; + | ^^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:25:21 + | +LL | let _ = v2[5] + v2[15]; + | ^^^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: indexing into a slice multiple times without an `assert` + --> $DIR/missing_asserts_for_indexing_unfixable.rs:31:13 + | +LL | let _ = v2[5] + v2[15]; + | ^^^^^^^^^^^^^^ + | + = help: consider asserting the length before indexing: `assert!(v2.len() > 15);` +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:31:13 + | +LL | let _ = v2[5] + v2[15]; + | ^^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:31:21 + | +LL | let _ = v2[5] + v2[15]; + | ^^^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: indexing into a slice multiple times without an `assert` + --> $DIR/missing_asserts_for_indexing_unfixable.rs:40:13 + | +LL | let _ = f.v[0] + f.v[1]; + | ^^^^^^^^^^^^^^^ + | + = help: consider asserting the length before indexing: `assert!(f.v.len() > 1);` +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:40:13 + | +LL | let _ = f.v[0] + f.v[1]; + | ^^^^^^ +note: slice indexed here + --> $DIR/missing_asserts_for_indexing_unfixable.rs:40:22 + | +LL | let _ = f.v[0] + f.v[1]; + | ^^^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: aborting due to 7 previous errors + diff --git a/tests/ui/needless_borrow.fixed b/tests/ui/needless_borrow.fixed index ee67224b4..0a52b2522 100644 --- a/tests/ui/needless_borrow.fixed +++ b/tests/ui/needless_borrow.fixed @@ -503,3 +503,16 @@ mod issue_10535 { { } } + +mod issue_10253 { + struct S; + trait X { + fn f(&self); + } + impl X for &S { + fn f(&self) {} + } + fn f() { + (&S).f::<()>(); + } +} diff --git a/tests/ui/needless_borrow.rs b/tests/ui/needless_borrow.rs index 1444f47d9..34a95d184 100644 --- a/tests/ui/needless_borrow.rs +++ b/tests/ui/needless_borrow.rs @@ -503,3 +503,16 @@ mod issue_10535 { { } } + +mod issue_10253 { + struct S; + trait X { + fn f(&self); + } + impl X for &S { + fn f(&self) {} + } + fn f() { + (&S).f::<()>(); + } +} diff --git a/tests/ui/needless_raw_string.fixed b/tests/ui/needless_raw_string.fixed index 4db375178..855498105 100644 --- a/tests/ui/needless_raw_string.fixed +++ b/tests/ui/needless_raw_string.fixed @@ -9,8 +9,13 @@ fn main() { b"aaa"; br#""aaa""#; br#"\s"#; - // currently disabled: https://github.com/rust-lang/rust/issues/113333 - // cr#"aaa"#; - // cr#""aaa""#; - // cr#"\s"#; + c"aaa"; + cr#""aaa""#; + cr#"\s"#; + + " + a + multiline + string + "; } diff --git a/tests/ui/needless_raw_string.rs b/tests/ui/needless_raw_string.rs index 59c75fda4..06d497303 100644 --- a/tests/ui/needless_raw_string.rs +++ b/tests/ui/needless_raw_string.rs @@ -9,8 +9,13 @@ fn main() { br#"aaa"#; br#""aaa""#; br#"\s"#; - // currently disabled: https://github.com/rust-lang/rust/issues/113333 - // cr#"aaa"#; - // cr#""aaa""#; - // cr#"\s"#; + cr#"aaa"#; + cr#""aaa""#; + cr#"\s"#; + + r#" + a + multiline + string + "#; } diff --git a/tests/ui/needless_raw_string.stderr b/tests/ui/needless_raw_string.stderr index 83cc6d332..e6806b31b 100644 --- a/tests/ui/needless_raw_string.stderr +++ b/tests/ui/needless_raw_string.stderr @@ -2,16 +2,58 @@ error: unnecessary raw string literal --> $DIR/needless_raw_string.rs:6:5 | LL | r#"aaa"#; - | ^^^^^^^^ help: try: `"aaa"` + | ^^^^^^^^ | = note: `-D clippy::needless-raw-strings` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::needless_raw_strings)]` +help: try + | +LL - r#"aaa"#; +LL + "aaa"; + | error: unnecessary raw string literal --> $DIR/needless_raw_string.rs:9:5 | LL | br#"aaa"#; - | ^^^^^^^^^ help: try: `b"aaa"` + | ^^^^^^^^^ + | +help: try + | +LL - br#"aaa"#; +LL + b"aaa"; + | -error: aborting due to 2 previous errors +error: unnecessary raw string literal + --> $DIR/needless_raw_string.rs:12:5 + | +LL | cr#"aaa"#; + | ^^^^^^^^^ + | +help: try + | +LL - cr#"aaa"#; +LL + c"aaa"; + | + +error: unnecessary raw string literal + --> $DIR/needless_raw_string.rs:16:5 + | +LL | / r#" +LL | | a +LL | | multiline +LL | | string +LL | | "#; + | |______^ + | +help: try + | +LL ~ " +LL | a +LL | multiline +LL | string +LL ~ "; + | + +error: aborting due to 4 previous errors diff --git a/tests/ui/needless_raw_string_hashes.fixed b/tests/ui/needless_raw_string_hashes.fixed index 84902157a..e980adeef 100644 --- a/tests/ui/needless_raw_string_hashes.fixed +++ b/tests/ui/needless_raw_string_hashes.fixed @@ -3,17 +3,22 @@ #![feature(c_str_literals)] fn main() { - r#"aaa"#; + r"\aaa"; r#"Hello "world"!"#; r####" "### "## "# "####; r###" "aa" "# "## "###; - br#"aaa"#; + br"\aaa"; br#"Hello "world"!"#; br####" "### "## "# "####; br###" "aa" "# "## "###; - // currently disabled: https://github.com/rust-lang/rust/issues/113333 - // cr#"aaa"#; - // cr##"Hello "world"!"##; - // cr######" "### "## "# "######; - // cr######" "aa" "# "## "######; + cr"\aaa"; + cr#"Hello "world"!"#; + cr####" "### "## "# "####; + cr###" "aa" "# "## "###; + + r" + \a + multiline + string + "; } diff --git a/tests/ui/needless_raw_string_hashes.rs b/tests/ui/needless_raw_string_hashes.rs index 62abae838..6113c5f25 100644 --- a/tests/ui/needless_raw_string_hashes.rs +++ b/tests/ui/needless_raw_string_hashes.rs @@ -3,17 +3,22 @@ #![feature(c_str_literals)] fn main() { - r#"aaa"#; + r#"\aaa"#; r##"Hello "world"!"##; r######" "### "## "# "######; r######" "aa" "# "## "######; - br#"aaa"#; + br#"\aaa"#; br##"Hello "world"!"##; br######" "### "## "# "######; br######" "aa" "# "## "######; - // currently disabled: https://github.com/rust-lang/rust/issues/113333 - // cr#"aaa"#; - // cr##"Hello "world"!"##; - // cr######" "### "## "# "######; - // cr######" "aa" "# "## "######; + cr#"\aaa"#; + cr##"Hello "world"!"##; + cr######" "### "## "# "######; + cr######" "aa" "# "## "######; + + r#" + \a + multiline + string + "#; } diff --git a/tests/ui/needless_raw_string_hashes.stderr b/tests/ui/needless_raw_string_hashes.stderr index 94c51c423..5a8e3d045 100644 --- a/tests/ui/needless_raw_string_hashes.stderr +++ b/tests/ui/needless_raw_string_hashes.stderr @@ -1,41 +1,167 @@ +error: unnecessary hashes around raw string literal + --> $DIR/needless_raw_string_hashes.rs:6:5 + | +LL | r#"\aaa"#; + | ^^^^^^^^^ + | + = note: `-D clippy::needless-raw-string-hashes` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::needless_raw_string_hashes)]` +help: remove all the hashes around the literal + | +LL - r#"\aaa"#; +LL + r"\aaa"; + | + error: unnecessary hashes around raw string literal --> $DIR/needless_raw_string_hashes.rs:7:5 | LL | r##"Hello "world"!"##; - | ^^^^^^^^^^^^^^^^^^^^^ help: try: `r#"Hello "world"!"#` + | ^^^^^^^^^^^^^^^^^^^^^ + | +help: remove one hash from both sides of the literal + | +LL - r##"Hello "world"!"##; +LL + r#"Hello "world"!"#; | - = note: `-D clippy::needless-raw-string-hashes` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::needless_raw_string_hashes)]` error: unnecessary hashes around raw string literal --> $DIR/needless_raw_string_hashes.rs:8:5 | LL | r######" "### "## "# "######; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `r####" "### "## "# "####` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: remove 2 hashes from both sides of the literal + | +LL - r######" "### "## "# "######; +LL + r####" "### "## "# "####; + | error: unnecessary hashes around raw string literal --> $DIR/needless_raw_string_hashes.rs:9:5 | LL | r######" "aa" "# "## "######; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `r###" "aa" "# "## "###` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: remove 3 hashes from both sides of the literal + | +LL - r######" "aa" "# "## "######; +LL + r###" "aa" "# "## "###; + | + +error: unnecessary hashes around raw string literal + --> $DIR/needless_raw_string_hashes.rs:10:5 + | +LL | br#"\aaa"#; + | ^^^^^^^^^^ + | +help: remove all the hashes around the literal + | +LL - br#"\aaa"#; +LL + br"\aaa"; + | error: unnecessary hashes around raw string literal --> $DIR/needless_raw_string_hashes.rs:11:5 | LL | br##"Hello "world"!"##; - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `br#"Hello "world"!"#` + | ^^^^^^^^^^^^^^^^^^^^^^ + | +help: remove one hash from both sides of the literal + | +LL - br##"Hello "world"!"##; +LL + br#"Hello "world"!"#; + | error: unnecessary hashes around raw string literal --> $DIR/needless_raw_string_hashes.rs:12:5 | LL | br######" "### "## "# "######; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `br####" "### "## "# "####` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: remove 2 hashes from both sides of the literal + | +LL - br######" "### "## "# "######; +LL + br####" "### "## "# "####; + | error: unnecessary hashes around raw string literal --> $DIR/needless_raw_string_hashes.rs:13:5 | LL | br######" "aa" "# "## "######; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `br###" "aa" "# "## "###` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: remove 3 hashes from both sides of the literal + | +LL - br######" "aa" "# "## "######; +LL + br###" "aa" "# "## "###; + | -error: aborting due to 6 previous errors +error: unnecessary hashes around raw string literal + --> $DIR/needless_raw_string_hashes.rs:14:5 + | +LL | cr#"\aaa"#; + | ^^^^^^^^^^ + | +help: remove all the hashes around the literal + | +LL - cr#"\aaa"#; +LL + cr"\aaa"; + | + +error: unnecessary hashes around raw string literal + --> $DIR/needless_raw_string_hashes.rs:15:5 + | +LL | cr##"Hello "world"!"##; + | ^^^^^^^^^^^^^^^^^^^^^^ + | +help: remove one hash from both sides of the literal + | +LL - cr##"Hello "world"!"##; +LL + cr#"Hello "world"!"#; + | + +error: unnecessary hashes around raw string literal + --> $DIR/needless_raw_string_hashes.rs:16:5 + | +LL | cr######" "### "## "# "######; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: remove 2 hashes from both sides of the literal + | +LL - cr######" "### "## "# "######; +LL + cr####" "### "## "# "####; + | + +error: unnecessary hashes around raw string literal + --> $DIR/needless_raw_string_hashes.rs:17:5 + | +LL | cr######" "aa" "# "## "######; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: remove 3 hashes from both sides of the literal + | +LL - cr######" "aa" "# "## "######; +LL + cr###" "aa" "# "## "###; + | + +error: unnecessary hashes around raw string literal + --> $DIR/needless_raw_string_hashes.rs:19:5 + | +LL | / r#" +LL | | \a +LL | | multiline +LL | | string +LL | | "#; + | |______^ + | +help: remove all the hashes around the literal + | +LL ~ r" +LL | \a +LL | multiline +LL | string +LL ~ "; + | + +error: aborting due to 13 previous errors diff --git a/tests/ui/never_loop.rs b/tests/ui/never_loop.rs index 001b94391..c67a6d449 100644 --- a/tests/ui/never_loop.rs +++ b/tests/ui/never_loop.rs @@ -337,10 +337,8 @@ pub fn test26() { pub fn test27() { loop { - //~^ ERROR: this loop never actually loops 'label: { let x = true; - // Lints because we cannot prove it's always `true` if x { break 'label; } @@ -349,6 +347,59 @@ pub fn test27() { } } +// issue 11004 +pub fn test29() { + loop { + 'label: { + if true { + break 'label; + } + return; + } + } +} + +pub fn test30() { + 'a: loop { + 'b: { + for j in 0..2 { + if j == 1 { + break 'b; + } + } + break 'a; + } + } +} + +pub fn test31(b: bool) { + 'a: loop { + 'b: { + 'c: loop { + //~^ ERROR: this loop never actually loops + if b { break 'c } else { break 'b } + } + continue 'a; + } + break 'a; + } +} + +pub fn test32() { + loop { + //~^ ERROR: this loop never actually loops + panic!("oh no"); + } + loop { + //~^ ERROR: this loop never actually loops + unimplemented!("not yet"); + } + loop { + // no error + todo!("maybe later"); + } +} + fn main() { test1(); test2(); diff --git a/tests/ui/never_loop.stderr b/tests/ui/never_loop.stderr index 234780007..3982f36ce 100644 --- a/tests/ui/never_loop.stderr +++ b/tests/ui/never_loop.stderr @@ -154,16 +154,31 @@ LL | if let Some(_) = (0..20).next() { | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: this loop never actually loops - --> $DIR/never_loop.rs:339:5 + --> $DIR/never_loop.rs:378:13 + | +LL | / 'c: loop { +LL | | +LL | | if b { break 'c } else { break 'b } +LL | | } + | |_____________^ + +error: this loop never actually loops + --> $DIR/never_loop.rs:389:5 | LL | / loop { LL | | -LL | | 'label: { -LL | | let x = true; -... | -LL | | } +LL | | panic!("oh no"); LL | | } | |_____^ -error: aborting due to 14 previous errors +error: this loop never actually loops + --> $DIR/never_loop.rs:393:5 + | +LL | / loop { +LL | | +LL | | unimplemented!("not yet"); +LL | | } + | |_____^ + +error: aborting due to 16 previous errors diff --git a/tests/ui/incorrect_clone_impl_on_copy_type.fixed b/tests/ui/non_canonical_clone_impl.fixed similarity index 100% rename from tests/ui/incorrect_clone_impl_on_copy_type.fixed rename to tests/ui/non_canonical_clone_impl.fixed diff --git a/tests/ui/incorrect_clone_impl_on_copy_type.rs b/tests/ui/non_canonical_clone_impl.rs similarity index 100% rename from tests/ui/incorrect_clone_impl_on_copy_type.rs rename to tests/ui/non_canonical_clone_impl.rs diff --git a/tests/ui/incorrect_clone_impl_on_copy_type.stderr b/tests/ui/non_canonical_clone_impl.stderr similarity index 54% rename from tests/ui/incorrect_clone_impl_on_copy_type.stderr rename to tests/ui/non_canonical_clone_impl.stderr index 566a1a4b1..44196751b 100644 --- a/tests/ui/incorrect_clone_impl_on_copy_type.stderr +++ b/tests/ui/non_canonical_clone_impl.stderr @@ -1,5 +1,5 @@ -error: incorrect implementation of `clone` on a `Copy` type - --> $DIR/incorrect_clone_impl_on_copy_type.rs:9:29 +error: non-canonical implementation of `clone` on a `Copy` type + --> $DIR/non_canonical_clone_impl.rs:9:29 | LL | fn clone(&self) -> Self { | _____________________________^ @@ -7,10 +7,11 @@ LL | | Self(self.0) LL | | } | |_____^ help: change this to: `{ *self }` | - = note: `#[deny(clippy::incorrect_clone_impl_on_copy_type)]` on by default + = note: `-D clippy::non-canonical-clone-impl` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::non_canonical_clone_impl)]` -error: incorrect implementation of `clone_from` on a `Copy` type - --> $DIR/incorrect_clone_impl_on_copy_type.rs:13:5 +error: unnecessary implementation of `clone_from` on a `Copy` type + --> $DIR/non_canonical_clone_impl.rs:13:5 | LL | / fn clone_from(&mut self, source: &Self) { LL | | source.clone(); @@ -18,8 +19,8 @@ LL | | *self = source.clone(); LL | | } | |_____^ help: remove it -error: incorrect implementation of `clone` on a `Copy` type - --> $DIR/incorrect_clone_impl_on_copy_type.rs:80:29 +error: non-canonical implementation of `clone` on a `Copy` type + --> $DIR/non_canonical_clone_impl.rs:80:29 | LL | fn clone(&self) -> Self { | _____________________________^ @@ -27,8 +28,8 @@ LL | | Self(self.0) LL | | } | |_____^ help: change this to: `{ *self }` -error: incorrect implementation of `clone_from` on a `Copy` type - --> $DIR/incorrect_clone_impl_on_copy_type.rs:84:5 +error: unnecessary implementation of `clone_from` on a `Copy` type + --> $DIR/non_canonical_clone_impl.rs:84:5 | LL | / fn clone_from(&mut self, source: &Self) { LL | | source.clone(); diff --git a/tests/ui/incorrect_partial_ord_impl_on_ord_type.fixed b/tests/ui/non_canonical_partial_ord_impl.fixed similarity index 100% rename from tests/ui/incorrect_partial_ord_impl_on_ord_type.fixed rename to tests/ui/non_canonical_partial_ord_impl.fixed diff --git a/tests/ui/incorrect_partial_ord_impl_on_ord_type.rs b/tests/ui/non_canonical_partial_ord_impl.rs similarity index 100% rename from tests/ui/incorrect_partial_ord_impl_on_ord_type.rs rename to tests/ui/non_canonical_partial_ord_impl.rs diff --git a/tests/ui/incorrect_partial_ord_impl_on_ord_type.stderr b/tests/ui/non_canonical_partial_ord_impl.stderr similarity index 63% rename from tests/ui/incorrect_partial_ord_impl_on_ord_type.stderr rename to tests/ui/non_canonical_partial_ord_impl.stderr index 1f7069846..05cc717b9 100644 --- a/tests/ui/incorrect_partial_ord_impl_on_ord_type.stderr +++ b/tests/ui/non_canonical_partial_ord_impl.stderr @@ -1,5 +1,5 @@ -error: incorrect implementation of `partial_cmp` on an `Ord` type - --> $DIR/incorrect_partial_ord_impl_on_ord_type.rs:16:1 +error: non-canonical implementation of `partial_cmp` on an `Ord` type + --> $DIR/non_canonical_partial_ord_impl.rs:16:1 | LL | / impl PartialOrd for A { LL | | fn partial_cmp(&self, other: &Self) -> Option { @@ -10,10 +10,11 @@ LL | || } LL | | } | |__^ | - = note: `#[deny(clippy::incorrect_partial_ord_impl_on_ord_type)]` on by default + = note: `-D clippy::non-canonical-partial-ord-impl` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::non_canonical_partial_ord_impl)]` -error: incorrect implementation of `partial_cmp` on an `Ord` type - --> $DIR/incorrect_partial_ord_impl_on_ord_type.rs:50:1 +error: non-canonical implementation of `partial_cmp` on an `Ord` type + --> $DIR/non_canonical_partial_ord_impl.rs:50:1 | LL | / impl PartialOrd for C { LL | | fn partial_cmp(&self, _: &Self) -> Option { diff --git a/tests/ui/incorrect_partial_ord_impl_on_ord_type_fully_qual.rs b/tests/ui/non_canonical_partial_ord_impl_fully_qual.rs similarity index 82% rename from tests/ui/incorrect_partial_ord_impl_on_ord_type_fully_qual.rs rename to tests/ui/non_canonical_partial_ord_impl_fully_qual.rs index 1173a95d0..2f8d5cf30 100644 --- a/tests/ui/incorrect_partial_ord_impl_on_ord_type_fully_qual.rs +++ b/tests/ui/non_canonical_partial_ord_impl_fully_qual.rs @@ -21,8 +21,6 @@ impl cmp::Ord for A { } impl PartialOrd for A { - //~^ ERROR: incorrect implementation of `partial_cmp` on an `Ord` type - //~| NOTE: `#[deny(clippy::incorrect_partial_ord_impl_on_ord_type)]` on by default fn partial_cmp(&self, other: &Self) -> Option { // NOTE: This suggestion is wrong, as `Ord` is not in scope. But this should be fine as it isn't // automatically applied @@ -46,7 +44,6 @@ impl cmp::Ord for B { } impl PartialOrd for B { - //~^ ERROR: incorrect implementation of `partial_cmp` on an `Ord` type fn partial_cmp(&self, other: &Self) -> Option { // This calls `B.cmp`, not `Ord::cmp`! Some(self.cmp(other)) diff --git a/tests/ui/incorrect_partial_ord_impl_on_ord_type_fully_qual.stderr b/tests/ui/non_canonical_partial_ord_impl_fully_qual.stderr similarity index 67% rename from tests/ui/incorrect_partial_ord_impl_on_ord_type_fully_qual.stderr rename to tests/ui/non_canonical_partial_ord_impl_fully_qual.stderr index 09d7a32e3..4978d7a87 100644 --- a/tests/ui/incorrect_partial_ord_impl_on_ord_type_fully_qual.stderr +++ b/tests/ui/non_canonical_partial_ord_impl_fully_qual.stderr @@ -1,9 +1,7 @@ -error: incorrect implementation of `partial_cmp` on an `Ord` type - --> $DIR/incorrect_partial_ord_impl_on_ord_type_fully_qual.rs:23:1 +error: non-canonical implementation of `partial_cmp` on an `Ord` type + --> $DIR/non_canonical_partial_ord_impl_fully_qual.rs:23:1 | LL | / impl PartialOrd for A { -LL | | -LL | | LL | | fn partial_cmp(&self, other: &Self) -> Option { | | _____________________________________________________________- LL | || // NOTE: This suggestion is wrong, as `Ord` is not in scope. But this should be fine as it isn't @@ -14,13 +12,13 @@ LL | || } LL | | } | |__^ | - = note: `#[deny(clippy::incorrect_partial_ord_impl_on_ord_type)]` on by default + = note: `-D clippy::non-canonical-partial-ord-impl` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::non_canonical_partial_ord_impl)]` -error: incorrect implementation of `partial_cmp` on an `Ord` type - --> $DIR/incorrect_partial_ord_impl_on_ord_type_fully_qual.rs:48:1 +error: non-canonical implementation of `partial_cmp` on an `Ord` type + --> $DIR/non_canonical_partial_ord_impl_fully_qual.rs:46:1 | LL | / impl PartialOrd for B { -LL | | LL | | fn partial_cmp(&self, other: &Self) -> Option { | | _____________________________________________________________- LL | || // This calls `B.cmp`, not `Ord::cmp`! diff --git a/tests/ui/rename.fixed b/tests/ui/rename.fixed index 0fd68eb92..4df9be2c2 100644 --- a/tests/ui/rename.fixed +++ b/tests/ui/rename.fixed @@ -14,6 +14,8 @@ #![allow(clippy::mixed_read_write_in_expression)] #![allow(clippy::useless_conversion)] #![allow(clippy::match_result_ok)] +#![allow(clippy::non_canonical_clone_impl)] +#![allow(clippy::non_canonical_partial_ord_impl)] #![allow(clippy::arithmetic_side_effects)] #![allow(clippy::overly_complex_bool_expr)] #![allow(clippy::new_without_default)] @@ -33,10 +35,10 @@ #![allow(drop_bounds)] #![allow(dropping_copy_types)] #![allow(dropping_references)] +#![allow(useless_ptr_null_checks)] #![allow(for_loops_over_fallibles)] #![allow(forgetting_copy_types)] #![allow(forgetting_references)] -#![allow(useless_ptr_null_checks)] #![allow(array_into_iter)] #![allow(invalid_atomic_ordering)] #![allow(invalid_value)] @@ -62,6 +64,8 @@ #![warn(clippy::mixed_read_write_in_expression)] #![warn(clippy::useless_conversion)] #![warn(clippy::match_result_ok)] +#![warn(clippy::non_canonical_clone_impl)] +#![warn(clippy::non_canonical_partial_ord_impl)] #![warn(clippy::arithmetic_side_effects)] #![warn(clippy::overly_complex_bool_expr)] #![warn(clippy::new_without_default)] @@ -85,12 +89,12 @@ #![warn(drop_bounds)] #![warn(dropping_copy_types)] #![warn(dropping_references)] +#![warn(useless_ptr_null_checks)] #![warn(for_loops_over_fallibles)] #![warn(for_loops_over_fallibles)] #![warn(for_loops_over_fallibles)] #![warn(forgetting_copy_types)] #![warn(forgetting_references)] -#![warn(useless_ptr_null_checks)] #![warn(array_into_iter)] #![warn(invalid_atomic_ordering)] #![warn(invalid_value)] diff --git a/tests/ui/rename.rs b/tests/ui/rename.rs index 927937fba..940e60068 100644 --- a/tests/ui/rename.rs +++ b/tests/ui/rename.rs @@ -14,6 +14,8 @@ #![allow(clippy::mixed_read_write_in_expression)] #![allow(clippy::useless_conversion)] #![allow(clippy::match_result_ok)] +#![allow(clippy::non_canonical_clone_impl)] +#![allow(clippy::non_canonical_partial_ord_impl)] #![allow(clippy::arithmetic_side_effects)] #![allow(clippy::overly_complex_bool_expr)] #![allow(clippy::new_without_default)] @@ -33,10 +35,10 @@ #![allow(drop_bounds)] #![allow(dropping_copy_types)] #![allow(dropping_references)] +#![allow(useless_ptr_null_checks)] #![allow(for_loops_over_fallibles)] #![allow(forgetting_copy_types)] #![allow(forgetting_references)] -#![allow(useless_ptr_null_checks)] #![allow(array_into_iter)] #![allow(invalid_atomic_ordering)] #![allow(invalid_value)] @@ -62,6 +64,8 @@ #![warn(clippy::eval_order_dependence)] #![warn(clippy::identity_conversion)] #![warn(clippy::if_let_some_result)] +#![warn(clippy::incorrect_clone_impl_on_copy_type)] +#![warn(clippy::incorrect_partial_ord_impl_on_ord_type)] #![warn(clippy::integer_arithmetic)] #![warn(clippy::logic_bug)] #![warn(clippy::new_without_default_derive)] @@ -85,12 +89,12 @@ #![warn(clippy::drop_bounds)] #![warn(clippy::drop_copy)] #![warn(clippy::drop_ref)] +#![warn(clippy::fn_null_check)] #![warn(clippy::for_loop_over_option)] #![warn(clippy::for_loop_over_result)] #![warn(clippy::for_loops_over_fallibles)] #![warn(clippy::forget_copy)] #![warn(clippy::forget_ref)] -#![warn(clippy::fn_null_check)] #![warn(clippy::into_iter_on_array)] #![warn(clippy::invalid_atomic_ordering)] #![warn(clippy::invalid_ref)] diff --git a/tests/ui/rename.stderr b/tests/ui/rename.stderr index d98fc7b30..30824e154 100644 --- a/tests/ui/rename.stderr +++ b/tests/ui/rename.stderr @@ -1,5 +1,5 @@ error: lint `clippy::almost_complete_letter_range` has been renamed to `clippy::almost_complete_range` - --> $DIR/rename.rs:52:9 + --> $DIR/rename.rs:54:9 | LL | #![warn(clippy::almost_complete_letter_range)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::almost_complete_range` @@ -8,322 +8,334 @@ LL | #![warn(clippy::almost_complete_letter_range)] = help: to override `-D warnings` add `#[allow(renamed_and_removed_lints)]` error: lint `clippy::blacklisted_name` has been renamed to `clippy::disallowed_names` - --> $DIR/rename.rs:53:9 + --> $DIR/rename.rs:55:9 | LL | #![warn(clippy::blacklisted_name)] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_names` error: lint `clippy::block_in_if_condition_expr` has been renamed to `clippy::blocks_in_if_conditions` - --> $DIR/rename.rs:54:9 + --> $DIR/rename.rs:56:9 | LL | #![warn(clippy::block_in_if_condition_expr)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::blocks_in_if_conditions` error: lint `clippy::block_in_if_condition_stmt` has been renamed to `clippy::blocks_in_if_conditions` - --> $DIR/rename.rs:55:9 + --> $DIR/rename.rs:57:9 | LL | #![warn(clippy::block_in_if_condition_stmt)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::blocks_in_if_conditions` error: lint `clippy::box_vec` has been renamed to `clippy::box_collection` - --> $DIR/rename.rs:56:9 + --> $DIR/rename.rs:58:9 | LL | #![warn(clippy::box_vec)] | ^^^^^^^^^^^^^^^ help: use the new name: `clippy::box_collection` error: lint `clippy::const_static_lifetime` has been renamed to `clippy::redundant_static_lifetimes` - --> $DIR/rename.rs:57:9 + --> $DIR/rename.rs:59:9 | LL | #![warn(clippy::const_static_lifetime)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::redundant_static_lifetimes` error: lint `clippy::cyclomatic_complexity` has been renamed to `clippy::cognitive_complexity` - --> $DIR/rename.rs:58:9 + --> $DIR/rename.rs:60:9 | LL | #![warn(clippy::cyclomatic_complexity)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::cognitive_complexity` error: lint `clippy::derive_hash_xor_eq` has been renamed to `clippy::derived_hash_with_manual_eq` - --> $DIR/rename.rs:59:9 + --> $DIR/rename.rs:61:9 | LL | #![warn(clippy::derive_hash_xor_eq)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::derived_hash_with_manual_eq` error: lint `clippy::disallowed_method` has been renamed to `clippy::disallowed_methods` - --> $DIR/rename.rs:60:9 + --> $DIR/rename.rs:62:9 | LL | #![warn(clippy::disallowed_method)] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_methods` error: lint `clippy::disallowed_type` has been renamed to `clippy::disallowed_types` - --> $DIR/rename.rs:61:9 + --> $DIR/rename.rs:63:9 | LL | #![warn(clippy::disallowed_type)] | ^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_types` error: lint `clippy::eval_order_dependence` has been renamed to `clippy::mixed_read_write_in_expression` - --> $DIR/rename.rs:62:9 + --> $DIR/rename.rs:64:9 | LL | #![warn(clippy::eval_order_dependence)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::mixed_read_write_in_expression` error: lint `clippy::identity_conversion` has been renamed to `clippy::useless_conversion` - --> $DIR/rename.rs:63:9 + --> $DIR/rename.rs:65:9 | LL | #![warn(clippy::identity_conversion)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::useless_conversion` error: lint `clippy::if_let_some_result` has been renamed to `clippy::match_result_ok` - --> $DIR/rename.rs:64:9 + --> $DIR/rename.rs:66:9 | LL | #![warn(clippy::if_let_some_result)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::match_result_ok` +error: lint `clippy::incorrect_clone_impl_on_copy_type` has been renamed to `clippy::non_canonical_clone_impl` + --> $DIR/rename.rs:67:9 + | +LL | #![warn(clippy::incorrect_clone_impl_on_copy_type)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::non_canonical_clone_impl` + +error: lint `clippy::incorrect_partial_ord_impl_on_ord_type` has been renamed to `clippy::non_canonical_partial_ord_impl` + --> $DIR/rename.rs:68:9 + | +LL | #![warn(clippy::incorrect_partial_ord_impl_on_ord_type)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::non_canonical_partial_ord_impl` + error: lint `clippy::integer_arithmetic` has been renamed to `clippy::arithmetic_side_effects` - --> $DIR/rename.rs:65:9 + --> $DIR/rename.rs:69:9 | LL | #![warn(clippy::integer_arithmetic)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::arithmetic_side_effects` error: lint `clippy::logic_bug` has been renamed to `clippy::overly_complex_bool_expr` - --> $DIR/rename.rs:66:9 + --> $DIR/rename.rs:70:9 | LL | #![warn(clippy::logic_bug)] | ^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::overly_complex_bool_expr` error: lint `clippy::new_without_default_derive` has been renamed to `clippy::new_without_default` - --> $DIR/rename.rs:67:9 + --> $DIR/rename.rs:71:9 | LL | #![warn(clippy::new_without_default_derive)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::new_without_default` error: lint `clippy::option_and_then_some` has been renamed to `clippy::bind_instead_of_map` - --> $DIR/rename.rs:68:9 + --> $DIR/rename.rs:72:9 | LL | #![warn(clippy::option_and_then_some)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::bind_instead_of_map` error: lint `clippy::option_expect_used` has been renamed to `clippy::expect_used` - --> $DIR/rename.rs:69:9 + --> $DIR/rename.rs:73:9 | LL | #![warn(clippy::option_expect_used)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::expect_used` error: lint `clippy::option_map_unwrap_or` has been renamed to `clippy::map_unwrap_or` - --> $DIR/rename.rs:70:9 + --> $DIR/rename.rs:74:9 | LL | #![warn(clippy::option_map_unwrap_or)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or` error: lint `clippy::option_map_unwrap_or_else` has been renamed to `clippy::map_unwrap_or` - --> $DIR/rename.rs:71:9 + --> $DIR/rename.rs:75:9 | LL | #![warn(clippy::option_map_unwrap_or_else)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or` error: lint `clippy::option_unwrap_used` has been renamed to `clippy::unwrap_used` - --> $DIR/rename.rs:72:9 + --> $DIR/rename.rs:76:9 | LL | #![warn(clippy::option_unwrap_used)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_used` error: lint `clippy::ref_in_deref` has been renamed to `clippy::needless_borrow` - --> $DIR/rename.rs:73:9 + --> $DIR/rename.rs:77:9 | LL | #![warn(clippy::ref_in_deref)] | ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::needless_borrow` error: lint `clippy::result_expect_used` has been renamed to `clippy::expect_used` - --> $DIR/rename.rs:74:9 + --> $DIR/rename.rs:78:9 | LL | #![warn(clippy::result_expect_used)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::expect_used` error: lint `clippy::result_map_unwrap_or_else` has been renamed to `clippy::map_unwrap_or` - --> $DIR/rename.rs:75:9 + --> $DIR/rename.rs:79:9 | LL | #![warn(clippy::result_map_unwrap_or_else)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or` error: lint `clippy::result_unwrap_used` has been renamed to `clippy::unwrap_used` - --> $DIR/rename.rs:76:9 + --> $DIR/rename.rs:80:9 | LL | #![warn(clippy::result_unwrap_used)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_used` error: lint `clippy::single_char_push_str` has been renamed to `clippy::single_char_add_str` - --> $DIR/rename.rs:77:9 + --> $DIR/rename.rs:81:9 | LL | #![warn(clippy::single_char_push_str)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::single_char_add_str` error: lint `clippy::stutter` has been renamed to `clippy::module_name_repetitions` - --> $DIR/rename.rs:78:9 + --> $DIR/rename.rs:82:9 | LL | #![warn(clippy::stutter)] | ^^^^^^^^^^^^^^^ help: use the new name: `clippy::module_name_repetitions` error: lint `clippy::to_string_in_display` has been renamed to `clippy::recursive_format_impl` - --> $DIR/rename.rs:79:9 + --> $DIR/rename.rs:83:9 | LL | #![warn(clippy::to_string_in_display)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::recursive_format_impl` error: lint `clippy::unwrap_or_else_default` has been renamed to `clippy::unwrap_or_default` - --> $DIR/rename.rs:80:9 + --> $DIR/rename.rs:84:9 | LL | #![warn(clippy::unwrap_or_else_default)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_or_default` error: lint `clippy::zero_width_space` has been renamed to `clippy::invisible_characters` - --> $DIR/rename.rs:81:9 + --> $DIR/rename.rs:85:9 | LL | #![warn(clippy::zero_width_space)] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::invisible_characters` error: lint `clippy::cast_ref_to_mut` has been renamed to `invalid_reference_casting` - --> $DIR/rename.rs:82:9 + --> $DIR/rename.rs:86:9 | LL | #![warn(clippy::cast_ref_to_mut)] | ^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_reference_casting` error: lint `clippy::clone_double_ref` has been renamed to `suspicious_double_ref_op` - --> $DIR/rename.rs:83:9 + --> $DIR/rename.rs:87:9 | LL | #![warn(clippy::clone_double_ref)] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `suspicious_double_ref_op` error: lint `clippy::cmp_nan` has been renamed to `invalid_nan_comparisons` - --> $DIR/rename.rs:84:9 + --> $DIR/rename.rs:88:9 | LL | #![warn(clippy::cmp_nan)] | ^^^^^^^^^^^^^^^ help: use the new name: `invalid_nan_comparisons` error: lint `clippy::drop_bounds` has been renamed to `drop_bounds` - --> $DIR/rename.rs:85:9 + --> $DIR/rename.rs:89:9 | LL | #![warn(clippy::drop_bounds)] | ^^^^^^^^^^^^^^^^^^^ help: use the new name: `drop_bounds` error: lint `clippy::drop_copy` has been renamed to `dropping_copy_types` - --> $DIR/rename.rs:86:9 + --> $DIR/rename.rs:90:9 | LL | #![warn(clippy::drop_copy)] | ^^^^^^^^^^^^^^^^^ help: use the new name: `dropping_copy_types` error: lint `clippy::drop_ref` has been renamed to `dropping_references` - --> $DIR/rename.rs:87:9 + --> $DIR/rename.rs:91:9 | LL | #![warn(clippy::drop_ref)] | ^^^^^^^^^^^^^^^^ help: use the new name: `dropping_references` +error: lint `clippy::fn_null_check` has been renamed to `useless_ptr_null_checks` + --> $DIR/rename.rs:92:9 + | +LL | #![warn(clippy::fn_null_check)] + | ^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `useless_ptr_null_checks` + error: lint `clippy::for_loop_over_option` has been renamed to `for_loops_over_fallibles` - --> $DIR/rename.rs:88:9 + --> $DIR/rename.rs:93:9 | LL | #![warn(clippy::for_loop_over_option)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles` error: lint `clippy::for_loop_over_result` has been renamed to `for_loops_over_fallibles` - --> $DIR/rename.rs:89:9 + --> $DIR/rename.rs:94:9 | LL | #![warn(clippy::for_loop_over_result)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles` error: lint `clippy::for_loops_over_fallibles` has been renamed to `for_loops_over_fallibles` - --> $DIR/rename.rs:90:9 + --> $DIR/rename.rs:95:9 | LL | #![warn(clippy::for_loops_over_fallibles)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles` error: lint `clippy::forget_copy` has been renamed to `forgetting_copy_types` - --> $DIR/rename.rs:91:9 + --> $DIR/rename.rs:96:9 | LL | #![warn(clippy::forget_copy)] | ^^^^^^^^^^^^^^^^^^^ help: use the new name: `forgetting_copy_types` error: lint `clippy::forget_ref` has been renamed to `forgetting_references` - --> $DIR/rename.rs:92:9 + --> $DIR/rename.rs:97:9 | LL | #![warn(clippy::forget_ref)] | ^^^^^^^^^^^^^^^^^^ help: use the new name: `forgetting_references` -error: lint `clippy::fn_null_check` has been renamed to `useless_ptr_null_checks` - --> $DIR/rename.rs:93:9 - | -LL | #![warn(clippy::fn_null_check)] - | ^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `useless_ptr_null_checks` - error: lint `clippy::into_iter_on_array` has been renamed to `array_into_iter` - --> $DIR/rename.rs:94:9 + --> $DIR/rename.rs:98:9 | LL | #![warn(clippy::into_iter_on_array)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `array_into_iter` error: lint `clippy::invalid_atomic_ordering` has been renamed to `invalid_atomic_ordering` - --> $DIR/rename.rs:95:9 + --> $DIR/rename.rs:99:9 | LL | #![warn(clippy::invalid_atomic_ordering)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_atomic_ordering` error: lint `clippy::invalid_ref` has been renamed to `invalid_value` - --> $DIR/rename.rs:96:9 + --> $DIR/rename.rs:100:9 | LL | #![warn(clippy::invalid_ref)] | ^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_value` error: lint `clippy::invalid_utf8_in_unchecked` has been renamed to `invalid_from_utf8_unchecked` - --> $DIR/rename.rs:97:9 + --> $DIR/rename.rs:101:9 | LL | #![warn(clippy::invalid_utf8_in_unchecked)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_from_utf8_unchecked` error: lint `clippy::let_underscore_drop` has been renamed to `let_underscore_drop` - --> $DIR/rename.rs:98:9 + --> $DIR/rename.rs:102:9 | LL | #![warn(clippy::let_underscore_drop)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `let_underscore_drop` error: lint `clippy::mem_discriminant_non_enum` has been renamed to `enum_intrinsics_non_enums` - --> $DIR/rename.rs:99:9 + --> $DIR/rename.rs:103:9 | LL | #![warn(clippy::mem_discriminant_non_enum)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `enum_intrinsics_non_enums` error: lint `clippy::panic_params` has been renamed to `non_fmt_panics` - --> $DIR/rename.rs:100:9 + --> $DIR/rename.rs:104:9 | LL | #![warn(clippy::panic_params)] | ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `non_fmt_panics` error: lint `clippy::positional_named_format_parameters` has been renamed to `named_arguments_used_positionally` - --> $DIR/rename.rs:101:9 + --> $DIR/rename.rs:105:9 | LL | #![warn(clippy::positional_named_format_parameters)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `named_arguments_used_positionally` error: lint `clippy::temporary_cstring_as_ptr` has been renamed to `temporary_cstring_as_ptr` - --> $DIR/rename.rs:102:9 + --> $DIR/rename.rs:106:9 | LL | #![warn(clippy::temporary_cstring_as_ptr)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `temporary_cstring_as_ptr` error: lint `clippy::undropped_manually_drops` has been renamed to `undropped_manually_drops` - --> $DIR/rename.rs:103:9 + --> $DIR/rename.rs:107:9 | LL | #![warn(clippy::undropped_manually_drops)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `undropped_manually_drops` error: lint `clippy::unknown_clippy_lints` has been renamed to `unknown_lints` - --> $DIR/rename.rs:104:9 + --> $DIR/rename.rs:108:9 | LL | #![warn(clippy::unknown_clippy_lints)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `unknown_lints` error: lint `clippy::unused_label` has been renamed to `unused_labels` - --> $DIR/rename.rs:105:9 + --> $DIR/rename.rs:109:9 | LL | #![warn(clippy::unused_label)] | ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `unused_labels` -error: aborting due to 54 previous errors +error: aborting due to 56 previous errors diff --git a/tests/ui/result_large_err.rs b/tests/ui/result_large_err.rs index 14a1f7e1d..b25348bf9 100644 --- a/tests/ui/result_large_err.rs +++ b/tests/ui/result_large_err.rs @@ -1,3 +1,5 @@ +//@ignore-32bit + #![warn(clippy::result_large_err)] #![allow(clippy::large_enum_variant)] diff --git a/tests/ui/result_large_err.stderr b/tests/ui/result_large_err.stderr index d42dd6600..6602f396a 100644 --- a/tests/ui/result_large_err.stderr +++ b/tests/ui/result_large_err.stderr @@ -1,5 +1,5 @@ error: the `Err`-variant returned from this function is very large - --> $DIR/result_large_err.rs:8:23 + --> $DIR/result_large_err.rs:10:23 | LL | pub fn large_err() -> Result<(), [u8; 512]> { | ^^^^^^^^^^^^^^^^^^^^^ the `Err`-variant is at least 512 bytes @@ -9,7 +9,7 @@ LL | pub fn large_err() -> Result<(), [u8; 512]> { = help: to override `-D warnings` add `#[allow(clippy::result_large_err)]` error: the `Err`-variant returned from this function is very large - --> $DIR/result_large_err.rs:20:21 + --> $DIR/result_large_err.rs:22:21 | LL | pub fn ret() -> Result<(), Self> { | ^^^^^^^^^^^^^^^^ the `Err`-variant is at least 240 bytes @@ -17,7 +17,7 @@ LL | pub fn ret() -> Result<(), Self> { = help: try reducing the size of `FullyDefinedLargeError`, for example by boxing large elements or replacing it with `Box` error: the `Err`-variant returned from this function is very large - --> $DIR/result_large_err.rs:26:26 + --> $DIR/result_large_err.rs:28:26 | LL | pub fn struct_error() -> Result<(), FullyDefinedLargeError> { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `Err`-variant is at least 240 bytes @@ -25,7 +25,7 @@ LL | pub fn struct_error() -> Result<(), FullyDefinedLargeError> { = help: try reducing the size of `FullyDefinedLargeError`, for example by boxing large elements or replacing it with `Box` error: the `Err`-variant returned from this function is very large - --> $DIR/result_large_err.rs:32:45 + --> $DIR/result_large_err.rs:34:45 | LL | pub fn large_err_via_type_alias(x: T) -> Fdlr { | ^^^^^^^ the `Err`-variant is at least 240 bytes @@ -33,7 +33,7 @@ LL | pub fn large_err_via_type_alias(x: T) -> Fdlr { = help: try reducing the size of `FullyDefinedLargeError`, for example by boxing large elements or replacing it with `Box` error: the `Err`-variant returned from this function is very large - --> $DIR/result_large_err.rs:41:34 + --> $DIR/result_large_err.rs:43:34 | LL | pub fn param_large_error() -> Result<(), (u128, R, FullyDefinedLargeError)> { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `Err`-variant is at least 256 bytes @@ -41,7 +41,7 @@ LL | pub fn param_large_error() -> Result<(), (u128, R, FullyDefinedLargeErro = help: try reducing the size of `(u128, R, FullyDefinedLargeError)`, for example by boxing large elements or replacing it with `Box<(u128, R, FullyDefinedLargeError)>` error: the `Err`-variant returned from this function is very large - --> $DIR/result_large_err.rs:53:34 + --> $DIR/result_large_err.rs:55:34 | LL | _Omg([u8; 512]), | --------------- the largest variant contains at least 512 bytes @@ -52,7 +52,7 @@ LL | pub fn large_enum_error() -> Result<(), Self> { = help: try reducing the size of `LargeErrorVariants<()>`, for example by boxing large elements or replacing it with `Box>` error: the `Err`-variant returned from this function is very large - --> $DIR/result_large_err.rs:66:30 + --> $DIR/result_large_err.rs:68:30 | LL | _Biggest([u8; 1024]), | -------------------- the largest variant contains at least 1024 bytes @@ -65,7 +65,7 @@ LL | fn large_enum_error() -> Result<(), Self> { = help: try reducing the size of `MultipleLargeVariants`, for example by boxing large elements or replacing it with `Box` error: the `Err`-variant returned from this function is very large - --> $DIR/result_large_err.rs:73:25 + --> $DIR/result_large_err.rs:75:25 | LL | fn large_error() -> Result<(), [u8; 512]> { | ^^^^^^^^^^^^^^^^^^^^^ the `Err`-variant is at least 512 bytes @@ -73,7 +73,7 @@ LL | fn large_error() -> Result<(), [u8; 512]> { = help: try reducing the size of `[u8; 512]`, for example by boxing large elements or replacing it with `Box<[u8; 512]>` error: the `Err`-variant returned from this function is very large - --> $DIR/result_large_err.rs:93:29 + --> $DIR/result_large_err.rs:95:29 | LL | pub fn large_union_err() -> Result<(), FullyDefinedUnionError> { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `Err`-variant is at least 512 bytes @@ -81,7 +81,7 @@ LL | pub fn large_union_err() -> Result<(), FullyDefinedUnionError> { = help: try reducing the size of `FullyDefinedUnionError`, for example by boxing large elements or replacing it with `Box` error: the `Err`-variant returned from this function is very large - --> $DIR/result_large_err.rs:103:40 + --> $DIR/result_large_err.rs:105:40 | LL | pub fn param_large_union() -> Result<(), UnionError> { | ^^^^^^^^^^^^^^^^^^^^^^^^^ the `Err`-variant is at least 512 bytes @@ -89,7 +89,7 @@ LL | pub fn param_large_union() -> Result<(), UnionError> { = help: try reducing the size of `UnionError`, for example by boxing large elements or replacing it with `Box>` error: the `Err`-variant returned from this function is very large - --> $DIR/result_large_err.rs:113:34 + --> $DIR/result_large_err.rs:115:34 | LL | pub fn array_error_subst() -> Result<(), ArrayError> { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `Err`-variant is at least 128 bytes @@ -97,7 +97,7 @@ LL | pub fn array_error_subst() -> Result<(), ArrayError> { = help: try reducing the size of `ArrayError`, for example by boxing large elements or replacing it with `Box>` error: the `Err`-variant returned from this function is very large - --> $DIR/result_large_err.rs:118:31 + --> $DIR/result_large_err.rs:120:31 | LL | pub fn array_error() -> Result<(), ArrayError<(i32, T), U>> { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `Err`-variant is at least 128 bytes diff --git a/tests/ui/similar_names.rs b/tests/ui/similar_names.rs index c5a941316..f46af56c6 100644 --- a/tests/ui/similar_names.rs +++ b/tests/ui/similar_names.rs @@ -3,6 +3,7 @@ unused, clippy::println_empty_string, clippy::empty_loop, + clippy::never_loop, clippy::diverging_sub_expression, clippy::let_unit_value )] diff --git a/tests/ui/similar_names.stderr b/tests/ui/similar_names.stderr index 011dbe679..44ae3532a 100644 --- a/tests/ui/similar_names.stderr +++ b/tests/ui/similar_names.stderr @@ -1,11 +1,11 @@ error: binding's name is too similar to existing binding - --> $DIR/similar_names.rs:21:9 + --> $DIR/similar_names.rs:22:9 | LL | let bpple: i32; | ^^^^^ | note: existing binding defined here - --> $DIR/similar_names.rs:19:9 + --> $DIR/similar_names.rs:20:9 | LL | let apple: i32; | ^^^^^ @@ -13,73 +13,73 @@ LL | let apple: i32; = help: to override `-D warnings` add `#[allow(clippy::similar_names)]` error: binding's name is too similar to existing binding - --> $DIR/similar_names.rs:24:9 + --> $DIR/similar_names.rs:25:9 | LL | let cpple: i32; | ^^^^^ | note: existing binding defined here - --> $DIR/similar_names.rs:19:9 + --> $DIR/similar_names.rs:20:9 | LL | let apple: i32; | ^^^^^ error: binding's name is too similar to existing binding - --> $DIR/similar_names.rs:49:9 + --> $DIR/similar_names.rs:50:9 | LL | let bluby: i32; | ^^^^^ | note: existing binding defined here - --> $DIR/similar_names.rs:48:9 + --> $DIR/similar_names.rs:49:9 | LL | let blubx: i32; | ^^^^^ error: binding's name is too similar to existing binding - --> $DIR/similar_names.rs:54:9 + --> $DIR/similar_names.rs:55:9 | LL | let coke: i32; | ^^^^ | note: existing binding defined here - --> $DIR/similar_names.rs:52:9 + --> $DIR/similar_names.rs:53:9 | LL | let cake: i32; | ^^^^ error: binding's name is too similar to existing binding - --> $DIR/similar_names.rs:73:9 + --> $DIR/similar_names.rs:74:9 | LL | let xyzeabc: i32; | ^^^^^^^ | note: existing binding defined here - --> $DIR/similar_names.rs:71:9 + --> $DIR/similar_names.rs:72:9 | LL | let xyz1abc: i32; | ^^^^^^^ error: binding's name is too similar to existing binding - --> $DIR/similar_names.rs:78:9 + --> $DIR/similar_names.rs:79:9 | LL | let parsee: i32; | ^^^^^^ | note: existing binding defined here - --> $DIR/similar_names.rs:76:9 + --> $DIR/similar_names.rs:77:9 | LL | let parser: i32; | ^^^^^^ error: binding's name is too similar to existing binding - --> $DIR/similar_names.rs:100:16 + --> $DIR/similar_names.rs:101:16 | LL | bpple: sprang, | ^^^^^^ | note: existing binding defined here - --> $DIR/similar_names.rs:99:16 + --> $DIR/similar_names.rs:100:16 | LL | apple: spring, | ^^^^^^ diff --git a/tests/ui/single_call_fn.rs b/tests/ui/single_call_fn.rs index d6493f234..3cc806164 100644 --- a/tests/ui/single_call_fn.rs +++ b/tests/ui/single_call_fn.rs @@ -1,3 +1,4 @@ +//@ignore-32bit //@aux-build:proc_macros.rs #![allow(clippy::redundant_closure_call, unused)] #![warn(clippy::single_call_fn)] diff --git a/tests/ui/single_call_fn.stderr b/tests/ui/single_call_fn.stderr index 4acb383c4..d5cd70775 100644 --- a/tests/ui/single_call_fn.stderr +++ b/tests/ui/single_call_fn.stderr @@ -1,5 +1,5 @@ error: this function is only used once - --> $DIR/single_call_fn.rs:33:1 + --> $DIR/single_call_fn.rs:34:1 | LL | / fn c() { LL | | println!("really"); @@ -9,7 +9,7 @@ LL | | } | |_^ | help: used here - --> $DIR/single_call_fn.rs:40:5 + --> $DIR/single_call_fn.rs:41:5 | LL | c(); | ^ @@ -17,37 +17,37 @@ LL | c(); = help: to override `-D warnings` add `#[allow(clippy::single_call_fn)]` error: this function is only used once - --> $DIR/single_call_fn.rs:12:1 + --> $DIR/single_call_fn.rs:13:1 | LL | fn i() {} | ^^^^^^^^^ | help: used here - --> $DIR/single_call_fn.rs:17:13 + --> $DIR/single_call_fn.rs:18:13 | LL | let a = i; | ^ error: this function is only used once - --> $DIR/single_call_fn.rs:43:1 + --> $DIR/single_call_fn.rs:44:1 | LL | fn a() {} | ^^^^^^^^^ | help: used here - --> $DIR/single_call_fn.rs:46:5 + --> $DIR/single_call_fn.rs:47:5 | LL | a(); | ^ error: this function is only used once - --> $DIR/single_call_fn.rs:13:1 + --> $DIR/single_call_fn.rs:14:1 | LL | fn j() {} | ^^^^^^^^^ | help: used here - --> $DIR/single_call_fn.rs:24:9 + --> $DIR/single_call_fn.rs:25:9 | LL | j(); | ^ diff --git a/tests/ui/slow_vector_initialization.rs b/tests/ui/slow_vector_initialization.rs index f8d85ed38..5c3086c9d 100644 --- a/tests/ui/slow_vector_initialization.rs +++ b/tests/ui/slow_vector_initialization.rs @@ -1,5 +1,5 @@ -use std::iter::repeat; //@no-rustfix +use std::iter::repeat; fn main() { resize_vector(); extend_vector(); @@ -86,6 +86,20 @@ fn from_empty_vec() { vec1 = Vec::new(); vec1.resize(10, 0); //~^ ERROR: slow zero-filling initialization + + vec1 = vec![]; + vec1.resize(10, 0); + //~^ ERROR: slow zero-filling initialization + + macro_rules! x { + () => { + vec![] + }; + } + + // `vec![]` comes from another macro, don't warn + vec1 = x!(); + vec1.resize(10, 0); } fn do_stuff(vec: &mut [u8]) {} diff --git a/tests/ui/slow_vector_initialization.stderr b/tests/ui/slow_vector_initialization.stderr index f45015516..4d24400ec 100644 --- a/tests/ui/slow_vector_initialization.stderr +++ b/tests/ui/slow_vector_initialization.stderr @@ -97,8 +97,16 @@ LL | vec1 = Vec::new(); LL | vec1.resize(10, 0); | ^^^^^^^^^^^^^^^^^^ +error: slow zero-filling initialization + --> $DIR/slow_vector_initialization.rs:91:5 + | +LL | vec1 = vec![]; + | ------ help: consider replacing this with: `vec![0; 10]` +LL | vec1.resize(10, 0); + | ^^^^^^^^^^^^^^^^^^ + error: this argument is a mutable reference, but not used mutably - --> $DIR/slow_vector_initialization.rs:91:18 + --> $DIR/slow_vector_initialization.rs:105:18 | LL | fn do_stuff(vec: &mut [u8]) {} | ^^^^^^^^^ help: consider changing to: `&[u8]` @@ -106,5 +114,5 @@ LL | fn do_stuff(vec: &mut [u8]) {} = note: `-D clippy::needless-pass-by-ref-mut` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::needless_pass_by_ref_mut)]` -error: aborting due to 13 previous errors +error: aborting due to 14 previous errors diff --git a/tests/ui/std_instead_of_core.fixed b/tests/ui/std_instead_of_core.fixed new file mode 100644 index 000000000..8027c053f --- /dev/null +++ b/tests/ui/std_instead_of_core.fixed @@ -0,0 +1,62 @@ +#![warn(clippy::std_instead_of_core)] +#![allow(unused_imports)] + +extern crate alloc; + +#[warn(clippy::std_instead_of_core)] +fn std_instead_of_core() { + // Regular import + use core::hash::Hasher; + //~^ ERROR: used import from `std` instead of `core` + // Absolute path + use ::core::hash::Hash; + //~^ ERROR: used import from `std` instead of `core` + // Don't lint on `env` macro + use std::env; + + // Multiple imports + use core::fmt::{Debug, Result}; + //~^ ERROR: used import from `std` instead of `core` + + // Function calls + let ptr = core::ptr::null::(); + //~^ ERROR: used import from `std` instead of `core` + let ptr_mut = ::core::ptr::null_mut::(); + //~^ ERROR: used import from `std` instead of `core` + + // Types + let cell = core::cell::Cell::new(8u32); + //~^ ERROR: used import from `std` instead of `core` + let cell_absolute = ::core::cell::Cell::new(8u32); + //~^ ERROR: used import from `std` instead of `core` + + let _ = std::env!("PATH"); + + // do not lint until `error_in_core` is stable + use std::error::Error; + + // lint items re-exported from private modules, `core::iter::traits::iterator::Iterator` + use core::iter::Iterator; + //~^ ERROR: used import from `std` instead of `core` +} + +#[warn(clippy::std_instead_of_alloc)] +fn std_instead_of_alloc() { + // Only lint once. + use alloc::vec; + //~^ ERROR: used import from `std` instead of `alloc` + use alloc::vec::Vec; + //~^ ERROR: used import from `std` instead of `alloc` +} + +#[warn(clippy::alloc_instead_of_core)] +fn alloc_instead_of_core() { + use core::slice::from_ref; + //~^ ERROR: used import from `alloc` instead of `core` +} + +fn main() { + std_instead_of_core(); + std_instead_of_alloc(); + alloc_instead_of_core(); +} diff --git a/tests/ui/std_instead_of_core.rs b/tests/ui/std_instead_of_core.rs index 2e44487d7..63a096384 100644 --- a/tests/ui/std_instead_of_core.rs +++ b/tests/ui/std_instead_of_core.rs @@ -17,7 +17,6 @@ fn std_instead_of_core() { // Multiple imports use std::fmt::{Debug, Result}; //~^ ERROR: used import from `std` instead of `core` - //~| ERROR: used import from `std` instead of `core` // Function calls let ptr = std::ptr::null::(); diff --git a/tests/ui/std_instead_of_core.stderr b/tests/ui/std_instead_of_core.stderr index 7435d7161..ca26f77bd 100644 --- a/tests/ui/std_instead_of_core.stderr +++ b/tests/ui/std_instead_of_core.stderr @@ -2,103 +2,76 @@ error: used import from `std` instead of `core` --> $DIR/std_instead_of_core.rs:9:9 | LL | use std::hash::Hasher; - | ^^^^^^^^^^^^^^^^^ + | ^^^ help: consider importing the item from `core`: `core` | - = help: consider importing the item from `core` = note: `-D clippy::std-instead-of-core` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::std_instead_of_core)]` error: used import from `std` instead of `core` - --> $DIR/std_instead_of_core.rs:12:9 + --> $DIR/std_instead_of_core.rs:12:11 | LL | use ::std::hash::Hash; - | ^^^^^^^^^^^^^^^^^ - | - = help: consider importing the item from `core` + | ^^^ help: consider importing the item from `core`: `core` error: used import from `std` instead of `core` - --> $DIR/std_instead_of_core.rs:18:20 + --> $DIR/std_instead_of_core.rs:18:9 | LL | use std::fmt::{Debug, Result}; - | ^^^^^ - | - = help: consider importing the item from `core` + | ^^^ help: consider importing the item from `core`: `core` error: used import from `std` instead of `core` - --> $DIR/std_instead_of_core.rs:18:27 - | -LL | use std::fmt::{Debug, Result}; - | ^^^^^^ - | - = help: consider importing the item from `core` - -error: used import from `std` instead of `core` - --> $DIR/std_instead_of_core.rs:23:15 + --> $DIR/std_instead_of_core.rs:22:15 | LL | let ptr = std::ptr::null::(); - | ^^^^^^^^^^^^^^^^^^^^^ - | - = help: consider importing the item from `core` + | ^^^ help: consider importing the item from `core`: `core` error: used import from `std` instead of `core` - --> $DIR/std_instead_of_core.rs:25:19 + --> $DIR/std_instead_of_core.rs:24:21 | LL | let ptr_mut = ::std::ptr::null_mut::(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | - = help: consider importing the item from `core` + | ^^^ help: consider importing the item from `core`: `core` error: used import from `std` instead of `core` - --> $DIR/std_instead_of_core.rs:29:16 + --> $DIR/std_instead_of_core.rs:28:16 | LL | let cell = std::cell::Cell::new(8u32); - | ^^^^^^^^^^^^^^^ - | - = help: consider importing the item from `core` + | ^^^ help: consider importing the item from `core`: `core` error: used import from `std` instead of `core` - --> $DIR/std_instead_of_core.rs:31:25 + --> $DIR/std_instead_of_core.rs:30:27 | LL | let cell_absolute = ::std::cell::Cell::new(8u32); - | ^^^^^^^^^^^^^^^^^ - | - = help: consider importing the item from `core` + | ^^^ help: consider importing the item from `core`: `core` error: used import from `std` instead of `core` - --> $DIR/std_instead_of_core.rs:40:9 + --> $DIR/std_instead_of_core.rs:39:9 | LL | use std::iter::Iterator; - | ^^^^^^^^^^^^^^^^^^^ - | - = help: consider importing the item from `core` + | ^^^ help: consider importing the item from `core`: `core` error: used import from `std` instead of `alloc` - --> $DIR/std_instead_of_core.rs:47:9 + --> $DIR/std_instead_of_core.rs:46:9 | LL | use std::vec; - | ^^^^^^^^ + | ^^^ help: consider importing the item from `alloc`: `alloc` | - = help: consider importing the item from `alloc` = note: `-D clippy::std-instead-of-alloc` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::std_instead_of_alloc)]` error: used import from `std` instead of `alloc` - --> $DIR/std_instead_of_core.rs:49:9 + --> $DIR/std_instead_of_core.rs:48:9 | LL | use std::vec::Vec; - | ^^^^^^^^^^^^^ - | - = help: consider importing the item from `alloc` + | ^^^ help: consider importing the item from `alloc`: `alloc` error: used import from `alloc` instead of `core` - --> $DIR/std_instead_of_core.rs:55:9 + --> $DIR/std_instead_of_core.rs:54:9 | LL | use alloc::slice::from_ref; - | ^^^^^^^^^^^^^^^^^^^^^^ + | ^^^^^ help: consider importing the item from `core`: `core` | - = help: consider importing the item from `core` = note: `-D clippy::alloc-instead-of-core` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::alloc_instead_of_core)]` -error: aborting due to 12 previous errors +error: aborting due to 11 previous errors diff --git a/tests/ui/transmute_32bit.stderr b/tests/ui/transmute_32bit.stderr index 75ddca60d..baa819e30 100644 --- a/tests/ui/transmute_32bit.stderr +++ b/tests/ui/transmute_32bit.stderr @@ -1,39 +1,29 @@ -error[E0512]: cannot transmute between types of different sizes, or dependently-sized types +error: transmute from a `f32` to a pointer --> $DIR/transmute_32bit.rs:6:31 | LL | let _: *const usize = std::mem::transmute(6.0f32); - | ^^^^^^^^^^^^^^^^^^^ + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | - = note: source type: `f32` (32 bits) - = note: target type: `*const usize` (64 bits) + = note: `-D clippy::wrong-transmute` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::wrong_transmute)]` -error[E0512]: cannot transmute between types of different sizes, or dependently-sized types +error: transmute from a `f32` to a pointer --> $DIR/transmute_32bit.rs:8:29 | LL | let _: *mut usize = std::mem::transmute(6.0f32); - | ^^^^^^^^^^^^^^^^^^^ - | - = note: source type: `f32` (32 bits) - = note: target type: `*mut usize` (64 bits) + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ -error[E0512]: cannot transmute between types of different sizes, or dependently-sized types +error: transmute from a `char` to a pointer --> $DIR/transmute_32bit.rs:10:31 | LL | let _: *const usize = std::mem::transmute('x'); - | ^^^^^^^^^^^^^^^^^^^ - | - = note: source type: `char` (32 bits) - = note: target type: `*const usize` (64 bits) + | ^^^^^^^^^^^^^^^^^^^^^^^^ -error[E0512]: cannot transmute between types of different sizes, or dependently-sized types +error: transmute from a `char` to a pointer --> $DIR/transmute_32bit.rs:12:29 | LL | let _: *mut usize = std::mem::transmute('x'); - | ^^^^^^^^^^^^^^^^^^^ - | - = note: source type: `char` (32 bits) - = note: target type: `*mut usize` (64 bits) + | ^^^^^^^^^^^^^^^^^^^^^^^^ error: aborting due to 4 previous errors -For more information about this error, try `rustc --explain E0512`. diff --git a/tests/ui/unnecessary_struct_initialization.fixed b/tests/ui/unnecessary_struct_initialization.fixed index b5dedef5f..f3cf65da2 100644 --- a/tests/ui/unnecessary_struct_initialization.fixed +++ b/tests/ui/unnecessary_struct_initialization.fixed @@ -1,4 +1,4 @@ -#![allow(clippy::incorrect_clone_impl_on_copy_type, unused)] +#![allow(clippy::non_canonical_clone_impl, unused)] #![warn(clippy::unnecessary_struct_initialization)] struct S { diff --git a/tests/ui/unnecessary_struct_initialization.rs b/tests/ui/unnecessary_struct_initialization.rs index 2222c3ddf..bd5302f9d 100644 --- a/tests/ui/unnecessary_struct_initialization.rs +++ b/tests/ui/unnecessary_struct_initialization.rs @@ -1,4 +1,4 @@ -#![allow(clippy::incorrect_clone_impl_on_copy_type, unused)] +#![allow(clippy::non_canonical_clone_impl, unused)] #![warn(clippy::unnecessary_struct_initialization)] struct S { diff --git a/tests/ui/vec.fixed b/tests/ui/vec.fixed index 3ff2acbe2..bcbca971a 100644 --- a/tests/ui/vec.fixed +++ b/tests/ui/vec.fixed @@ -120,6 +120,7 @@ fn issue11075() { stringify!($e) }; } + #[allow(clippy::never_loop)] for _string in [repro!(true), repro!(null)] { unimplemented!(); } diff --git a/tests/ui/vec.rs b/tests/ui/vec.rs index 2ab025f42..087425585 100644 --- a/tests/ui/vec.rs +++ b/tests/ui/vec.rs @@ -120,6 +120,7 @@ fn issue11075() { stringify!($e) }; } + #[allow(clippy::never_loop)] for _string in vec![repro!(true), repro!(null)] { unimplemented!(); } diff --git a/tests/ui/vec.stderr b/tests/ui/vec.stderr index a28024d23..fc261838f 100644 --- a/tests/ui/vec.stderr +++ b/tests/ui/vec.stderr @@ -86,31 +86,31 @@ LL | for _ in vec![1, 2, 3] {} | ^^^^^^^^^^^^^ help: you can use an array directly: `[1, 2, 3]` error: useless use of `vec!` - --> $DIR/vec.rs:123:20 + --> $DIR/vec.rs:124:20 | LL | for _string in vec![repro!(true), repro!(null)] { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can use an array directly: `[repro!(true), repro!(null)]` error: useless use of `vec!` - --> $DIR/vec.rs:140:18 + --> $DIR/vec.rs:141:18 | LL | in_macro!(1, vec![1, 2], vec![1; 2]); | ^^^^^^^^^^ help: you can use an array directly: `[1, 2]` error: useless use of `vec!` - --> $DIR/vec.rs:140:30 + --> $DIR/vec.rs:141:30 | LL | in_macro!(1, vec![1, 2], vec![1; 2]); | ^^^^^^^^^^ help: you can use an array directly: `[1; 2]` error: useless use of `vec!` - --> $DIR/vec.rs:159:14 + --> $DIR/vec.rs:160:14 | LL | for a in vec![1, 2, 3] { | ^^^^^^^^^^^^^ help: you can use an array directly: `[1, 2, 3]` error: useless use of `vec!` - --> $DIR/vec.rs:163:14 + --> $DIR/vec.rs:164:14 | LL | for a in vec![String::new(), String::new()] { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can use an array directly: `[String::new(), String::new()]` diff --git a/tests/ui/write_literal_2.stderr b/tests/ui/write_literal_2.stderr index fc24dba45..6d382a267 100644 --- a/tests/ui/write_literal_2.stderr +++ b/tests/ui/write_literal_2.stderr @@ -2,7 +2,9 @@ error: unnecessary raw string literal --> $DIR/write_literal_2.rs:13:24 | LL | writeln!(v, r"{}", r"{hello}"); - | ^^^^^^^^^^ help: try: `"{hello}"` + | -^^^^^^^^^ + | | + | help: use a string literal instead: `"{hello}"` | = note: `-D clippy::needless-raw-strings` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::needless_raw_strings)]` From 5cd391c4adf0a50d07fe403ce7ddcbeb9922c8b9 Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Tue, 12 Sep 2023 23:47:47 +0200 Subject: [PATCH 07/26] make the set of methods between our two Const types more consistent --- clippy_lints/src/matches/overlapping_arms.rs | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) diff --git a/clippy_lints/src/matches/overlapping_arms.rs b/clippy_lints/src/matches/overlapping_arms.rs index 8be3c178a..6e13148f2 100644 --- a/clippy_lints/src/matches/overlapping_arms.rs +++ b/clippy_lints/src/matches/overlapping_arms.rs @@ -37,22 +37,14 @@ fn all_ranges<'tcx>(cx: &LateContext<'tcx>, arms: &'tcx [Arm<'_>], ty: Ty<'tcx>) Some(lhs) => constant(cx, cx.typeck_results(), lhs)?, None => { let min_val_const = ty.numeric_min_val(cx.tcx)?; - let min_constant = mir::ConstantKind::from_value( - cx.tcx.valtree_to_const_val((ty, min_val_const.to_valtree())), - ty, - ); - miri_to_const(cx, min_constant)? + miri_to_const(cx, mir::ConstantKind::from_ty_const(min_val_const, cx.tcx))? }, }; let rhs_const = match rhs { Some(rhs) => constant(cx, cx.typeck_results(), rhs)?, None => { let max_val_const = ty.numeric_max_val(cx.tcx)?; - let max_constant = mir::ConstantKind::from_value( - cx.tcx.valtree_to_const_val((ty, max_val_const.to_valtree())), - ty, - ); - miri_to_const(cx, max_constant)? + miri_to_const(cx, mir::ConstantKind::from_ty_const(max_val_const, cx.tcx))? }, }; let lhs_val = lhs_const.int_value(cx, ty)?; From 2aaaeb4e8166cf7ba52cf606eec2219730a06395 Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Mon, 11 Sep 2023 20:01:48 +0200 Subject: [PATCH 08/26] use AllocId instead of Allocation in ConstValue::ByRef --- clippy_utils/src/consts.rs | 53 ++++++++++++++++++++------------------ 1 file changed, 28 insertions(+), 25 deletions(-) diff --git a/clippy_utils/src/consts.rs b/clippy_utils/src/consts.rs index adeb673b6..03341feff 100644 --- a/clippy_utils/src/consts.rs +++ b/clippy_utils/src/consts.rs @@ -684,34 +684,37 @@ pub fn miri_to_const<'tcx>(lcx: &LateContext<'tcx>, result: mir::ConstantKind<'t }, _ => None, }, - mir::ConstantKind::Val(ConstValue::ByRef { alloc, offset: _ }, _) => match result.ty().kind() { - ty::Adt(adt_def, _) if adt_def.is_struct() => Some(Constant::Adt(result)), - ty::Array(sub_type, len) => match sub_type.kind() { - ty::Float(FloatTy::F32) => match len.try_to_target_usize(lcx.tcx) { - Some(len) => alloc - .inner() - .inspect_with_uninit_and_ptr_outside_interpreter(0..(4 * usize::try_from(len).unwrap())) - .to_owned() - .array_chunks::<4>() - .map(|&chunk| Some(Constant::F32(f32::from_le_bytes(chunk)))) - .collect::>>>() - .map(Constant::Vec), - _ => None, - }, - ty::Float(FloatTy::F64) => match len.try_to_target_usize(lcx.tcx) { - Some(len) => alloc - .inner() - .inspect_with_uninit_and_ptr_outside_interpreter(0..(8 * usize::try_from(len).unwrap())) - .to_owned() - .array_chunks::<8>() - .map(|&chunk| Some(Constant::F64(f64::from_le_bytes(chunk)))) - .collect::>>>() - .map(Constant::Vec), + mir::ConstantKind::Val(ConstValue::ByRef { alloc_id, offset: _ }, _) => { + let alloc = lcx.tcx.global_alloc(alloc_id).unwrap_memory(); + match result.ty().kind() { + ty::Adt(adt_def, _) if adt_def.is_struct() => Some(Constant::Adt(result)), + ty::Array(sub_type, len) => match sub_type.kind() { + ty::Float(FloatTy::F32) => match len.try_to_target_usize(lcx.tcx) { + Some(len) => alloc + .inner() + .inspect_with_uninit_and_ptr_outside_interpreter(0..(4 * usize::try_from(len).unwrap())) + .to_owned() + .array_chunks::<4>() + .map(|&chunk| Some(Constant::F32(f32::from_le_bytes(chunk)))) + .collect::>>>() + .map(Constant::Vec), + _ => None, + }, + ty::Float(FloatTy::F64) => match len.try_to_target_usize(lcx.tcx) { + Some(len) => alloc + .inner() + .inspect_with_uninit_and_ptr_outside_interpreter(0..(8 * usize::try_from(len).unwrap())) + .to_owned() + .array_chunks::<8>() + .map(|&chunk| Some(Constant::F64(f64::from_le_bytes(chunk)))) + .collect::>>>() + .map(Constant::Vec), + _ => None, + }, _ => None, }, _ => None, - }, - _ => None, + } }, _ => None, } From b2d5d68c58a745c80bc0187dba8c85e1519faabc Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Tue, 12 Sep 2023 07:49:25 +0200 Subject: [PATCH 09/26] =?UTF-8?q?cleanup=20op=5Fto=5Fconst=20a=20bit;=20re?= =?UTF-8?q?name=20ConstValue::ByRef=20=E2=86=92=20Indirect?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- clippy_lints/src/utils/internal_lints/unnecessary_def_path.rs | 2 +- clippy_utils/src/consts.rs | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/clippy_lints/src/utils/internal_lints/unnecessary_def_path.rs b/clippy_lints/src/utils/internal_lints/unnecessary_def_path.rs index f66f33fee..4a5b6fa5c 100644 --- a/clippy_lints/src/utils/internal_lints/unnecessary_def_path.rs +++ b/clippy_lints/src/utils/internal_lints/unnecessary_def_path.rs @@ -232,7 +232,7 @@ fn path_to_matched_type(cx: &LateContext<'_>, expr: &hir::Expr<'_>) -> Option match cx.tcx.const_eval_poly(def_id).ok()? { - ConstValue::ByRef { alloc, offset } if offset.bytes() == 0 => { + ConstValue::Indirect { alloc, offset } if offset.bytes() == 0 => { read_mir_alloc_def_path(cx, alloc.inner(), cx.tcx.type_of(def_id).instantiate_identity()) }, _ => None, diff --git a/clippy_utils/src/consts.rs b/clippy_utils/src/consts.rs index 03341feff..61b944667 100644 --- a/clippy_utils/src/consts.rs +++ b/clippy_utils/src/consts.rs @@ -684,7 +684,7 @@ pub fn miri_to_const<'tcx>(lcx: &LateContext<'tcx>, result: mir::ConstantKind<'t }, _ => None, }, - mir::ConstantKind::Val(ConstValue::ByRef { alloc_id, offset: _ }, _) => { + mir::ConstantKind::Val(ConstValue::Indirect { alloc_id, offset: _ }, _) => { let alloc = lcx.tcx.global_alloc(alloc_id).unwrap_memory(); match result.ty().kind() { ty::Adt(adt_def, _) if adt_def.is_struct() => Some(Constant::Adt(result)), From 272df70b50992885dcc70b8c34471234985b3be2 Mon Sep 17 00:00:00 2001 From: Deadbeef Date: Wed, 13 Sep 2023 13:55:23 +0000 Subject: [PATCH 10/26] treat host effect params as erased generics in codegen This fixes the changes brought to codegen tests when effect params are added to libcore, by not attempting to monomorphize functions that get the host param by being `const fn`. --- clippy_lints/src/derive.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/clippy_lints/src/derive.rs b/clippy_lints/src/derive.rs index d3311792c..2bdac1352 100644 --- a/clippy_lints/src/derive.rs +++ b/clippy_lints/src/derive.rs @@ -343,7 +343,7 @@ fn check_copy_clone<'tcx>(cx: &LateContext<'tcx>, item: &Item<'_>, trait_ref: &h // If the current self type doesn't implement Copy (due to generic constraints), search to see if // there's a Copy impl for any instance of the adt. if !is_copy(cx, ty) { - if ty_subs.non_erasable_generics().next().is_some() { + if ty_subs.non_erasable_generics(cx.tcx, ty_adt.did()).next().is_some() { let has_copy_impl = cx.tcx.all_local_trait_impls(()).get(©_id).map_or(false, |impls| { impls.iter().any(|&id| { matches!(cx.tcx.type_of(id).instantiate_identity().kind(), ty::Adt(adt, _) From 477a9b88bf31168e747a463b4942a8d64ae5917d Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Tue, 12 Sep 2023 14:44:38 +0200 Subject: [PATCH 11/26] fix clippy (and MIR printing) handling of ConstValue::Indirect slices --- clippy_utils/src/consts.rs | 17 ++++------------- 1 file changed, 4 insertions(+), 13 deletions(-) diff --git a/clippy_utils/src/consts.rs b/clippy_utils/src/consts.rs index 61b944667..fcb90c63a 100644 --- a/clippy_utils/src/consts.rs +++ b/clippy_utils/src/consts.rs @@ -671,19 +671,10 @@ pub fn miri_to_const<'tcx>(lcx: &LateContext<'tcx>, result: mir::ConstantKind<'t ty::RawPtr(_) => Some(Constant::RawPtr(int.assert_bits(int.size()))), _ => None, }, - mir::ConstantKind::Val(ConstValue::Slice { data, start, end }, _) => match result.ty().kind() { - ty::Ref(_, tam, _) => match tam.kind() { - ty::Str => String::from_utf8( - data.inner() - .inspect_with_uninit_and_ptr_outside_interpreter(start..end) - .to_owned(), - ) - .ok() - .map(Constant::Str), - _ => None, - }, - _ => None, - }, + mir::ConstantKind::Val(cv, _) if matches!(result.ty().kind(), ty::Ref(_, inner_ty, _) if matches!(inner_ty.kind(), ty::Str)) => { + let data = cv.try_get_slice_bytes_for_diagnostics(lcx.tcx)?; + String::from_utf8(data.to_owned()).ok().map(Constant::Str) + } mir::ConstantKind::Val(ConstValue::Indirect { alloc_id, offset: _ }, _) => { let alloc = lcx.tcx.global_alloc(alloc_id).unwrap_memory(); match result.ty().kind() { From da4244e79c49d4a938c02eebb955f9b217001213 Mon Sep 17 00:00:00 2001 From: Alex Macleod Date: Thu, 14 Sep 2023 17:47:36 +0000 Subject: [PATCH 12/26] Ignore `#[doc(hidden)]` functions in clippy doc lints --- clippy_lints/src/doc.rs | 4 ++++ tests/ui/doc_errors.rs | 15 +++++++++++++++ tests/ui/doc_errors.stderr | 2 +- 3 files changed, 20 insertions(+), 1 deletion(-) diff --git a/clippy_lints/src/doc.rs b/clippy_lints/src/doc.rs index 4498e9ccd..bf2add6aa 100644 --- a/clippy_lints/src/doc.rs +++ b/clippy_lints/src/doc.rs @@ -479,6 +479,10 @@ fn check_attrs(cx: &LateContext<'_>, valid_idents: &FxHashSet, attrs: &[ Some(("fake".into(), "fake".into())) } + if is_doc_hidden(attrs) { + return None; + } + let (fragments, _) = attrs_to_doc_fragments(attrs.iter().map(|attr| (attr, None)), true); let mut doc = String::new(); for fragment in &fragments { diff --git a/tests/ui/doc_errors.rs b/tests/ui/doc_errors.rs index d661231c5..9b3783aaf 100644 --- a/tests/ui/doc_errors.rs +++ b/tests/ui/doc_errors.rs @@ -101,6 +101,11 @@ impl Struct1 { fn block_comment_leading_asterisks() -> Result<(), ()> { unimplemented!(); } + + #[doc(hidden)] + fn doc_hidden() -> Result<(), ()> { + unimplemented!(); + } } pub trait Trait1 { @@ -111,6 +116,11 @@ pub trait Trait1 { /// # Errors /// A description of the errors goes here. fn trait_method_with_errors_header() -> Result<(), ()>; + + #[doc(hidden)] + fn doc_hidden() -> Result<(), ()> { + unimplemented!(); + } } impl Trait1 for Struct1 { @@ -123,6 +133,11 @@ impl Trait1 for Struct1 { } } +#[doc(hidden)] +pub trait DocHidden { + fn f() -> Result<(), ()>; +} + fn main() -> Result<(), ()> { Ok(()) } diff --git a/tests/ui/doc_errors.stderr b/tests/ui/doc_errors.stderr index 28b2db244..dc59675b9 100644 --- a/tests/ui/doc_errors.stderr +++ b/tests/ui/doc_errors.stderr @@ -38,7 +38,7 @@ LL | pub async fn async_pub_method_missing_errors_header() -> Result<(), ()> | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: docs for function returning `Result` missing `# Errors` section - --> $DIR/doc_errors.rs:108:5 + --> $DIR/doc_errors.rs:113:5 | LL | fn trait_method_missing_errors_header() -> Result<(), ()>; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ From 1d49cb6118c346871f85dc3a0e7bb3330b09687b Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Mon, 11 Sep 2023 09:52:45 +0200 Subject: [PATCH 13/26] move required_consts check to general post-mono-check function --- clippy_lints/src/non_copy_const.rs | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/clippy_lints/src/non_copy_const.rs b/clippy_lints/src/non_copy_const.rs index 243192385..884663337 100644 --- a/clippy_lints/src/non_copy_const.rs +++ b/clippy_lints/src/non_copy_const.rs @@ -204,7 +204,7 @@ fn is_value_unfrozen_raw<'tcx>( // similar to 2., but with the a frozen variant) (e.g. borrowing // `borrow_interior_mutable_const::enums::AssocConsts::TO_BE_FROZEN_VARIANT`). // I chose this way because unfrozen enums as assoc consts are rare (or, hopefully, none). - err == ErrorHandled::TooGeneric + matches!(err, ErrorHandled::TooGeneric(..)) }, |val| val.map_or(true, |val| inner(cx, val, ty)), ) @@ -244,8 +244,8 @@ pub fn const_eval_resolve<'tcx>( }; tcx.const_eval_global_id_for_typeck(param_env, cid, span) }, - Ok(None) => Err(ErrorHandled::TooGeneric), - Err(err) => Err(ErrorHandled::Reported(err.into())), + Ok(None) => Err(ErrorHandled::TooGeneric(span.unwrap_or(rustc_span::DUMMY_SP))), + Err(err) => Err(ErrorHandled::Reported(err.into(), span.unwrap_or(rustc_span::DUMMY_SP))), } } From 3226e4b01089b4e8e8d474a8d498bb0c68e76ed2 Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Mon, 11 Sep 2023 23:09:11 +0200 Subject: [PATCH 14/26] don't point at const usage site for resolution-time errors also share the code that emits the actual error --- tests/ui-toml/suppress_lint_in_const/test.stderr | 2 +- tests/ui/indexing_slicing_index.stderr | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/tests/ui-toml/suppress_lint_in_const/test.stderr b/tests/ui-toml/suppress_lint_in_const/test.stderr index d14974faf..f8ace7995 100644 --- a/tests/ui-toml/suppress_lint_in_const/test.stderr +++ b/tests/ui-toml/suppress_lint_in_const/test.stderr @@ -4,7 +4,7 @@ error[E0080]: evaluation of `main::{constant#3}` failed LL | const { &ARR[idx4()] }; // Ok, should not produce stderr, since `suppress-restriction-lint-in-const` is set true. | ^^^^^^^^^^^ index out of bounds: the length is 2 but the index is 4 -note: erroneous constant used +note: erroneous constant encountered --> $DIR/test.rs:37:5 | LL | const { &ARR[idx4()] }; // Ok, should not produce stderr, since `suppress-restriction-lint-in-const` is set true. diff --git a/tests/ui/indexing_slicing_index.stderr b/tests/ui/indexing_slicing_index.stderr index 64facf208..1c34875d2 100644 --- a/tests/ui/indexing_slicing_index.stderr +++ b/tests/ui/indexing_slicing_index.stderr @@ -24,7 +24,7 @@ error[E0080]: evaluation of `main::{constant#3}` failed LL | const { &ARR[idx4()] }; | ^^^^^^^^^^^ index out of bounds: the length is 2 but the index is 4 -note: erroneous constant used +note: erroneous constant encountered --> $DIR/indexing_slicing_index.rs:48:5 | LL | const { &ARR[idx4()] }; From b30cefc775e92892f8d49a649bb09510bbbb79af Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Sat, 16 Sep 2023 09:36:22 +0200 Subject: [PATCH 15/26] move ConstValue into mir this way we have mir::ConstValue and ty::ValTree as reasonably parallel --- clippy_utils/src/consts.rs | 2 +- clippy_utils/src/ty.rs | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/clippy_utils/src/consts.rs b/clippy_utils/src/consts.rs index fcb90c63a..c88fce22f 100644 --- a/clippy_utils/src/consts.rs +++ b/clippy_utils/src/consts.rs @@ -656,7 +656,7 @@ impl<'a, 'tcx> ConstEvalLateContext<'a, 'tcx> { } pub fn miri_to_const<'tcx>(lcx: &LateContext<'tcx>, result: mir::ConstantKind<'tcx>) -> Option> { - use rustc_middle::mir::interpret::ConstValue; + use rustc_middle::mir::ConstValue; match result { mir::ConstantKind::Val(ConstValue::Scalar(Scalar::Int(int)), _) => match result.ty().kind() { ty::Adt(adt_def, _) if adt_def.is_struct() => Some(Constant::Adt(result)), diff --git a/clippy_utils/src/ty.rs b/clippy_utils/src/ty.rs index f0b4ede35..9e25d97f5 100644 --- a/clippy_utils/src/ty.rs +++ b/clippy_utils/src/ty.rs @@ -13,7 +13,7 @@ use rustc_hir::{Expr, FnDecl, LangItem, TyKind, Unsafety}; use rustc_infer::infer::type_variable::{TypeVariableOrigin, TypeVariableOriginKind}; use rustc_infer::infer::TyCtxtInferExt; use rustc_lint::LateContext; -use rustc_middle::mir::interpret::{ConstValue, Scalar}; +use rustc_middle::mir::{ConstValue, interpret::Scalar}; use rustc_middle::traits::EvaluationResult; use rustc_middle::ty::layout::ValidityRequirement; use rustc_middle::ty::{ From 2ea6ac5673931cd0804507ebe57452914d76f552 Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Wed, 20 Sep 2023 20:51:14 +0200 Subject: [PATCH 16/26] rename mir::Constant -> mir::ConstOperand, mir::ConstKind -> mir::Const --- clippy_lints/src/enum_clike.rs | 2 +- clippy_lints/src/matches/overlapping_arms.rs | 4 ++-- clippy_utils/src/consts.rs | 20 ++++++++++---------- clippy_utils/src/lib.rs | 6 +++--- 4 files changed, 16 insertions(+), 16 deletions(-) diff --git a/clippy_lints/src/enum_clike.rs b/clippy_lints/src/enum_clike.rs index 96c5c7fc5..3f60e5a7c 100644 --- a/clippy_lints/src/enum_clike.rs +++ b/clippy_lints/src/enum_clike.rs @@ -50,7 +50,7 @@ impl<'tcx> LateLintPass<'tcx> for UnportableVariant { .tcx .const_eval_poly(def_id.to_def_id()) .ok() - .map(|val| rustc_middle::mir::ConstantKind::from_value(val, ty)); + .map(|val| rustc_middle::mir::Const::from_value(val, ty)); if let Some(Constant::Int(val)) = constant.and_then(|c| miri_to_const(cx, c)) { if let ty::Adt(adt, _) = ty.kind() { if adt.is_enum() { diff --git a/clippy_lints/src/matches/overlapping_arms.rs b/clippy_lints/src/matches/overlapping_arms.rs index 6e13148f2..7c0485914 100644 --- a/clippy_lints/src/matches/overlapping_arms.rs +++ b/clippy_lints/src/matches/overlapping_arms.rs @@ -37,14 +37,14 @@ fn all_ranges<'tcx>(cx: &LateContext<'tcx>, arms: &'tcx [Arm<'_>], ty: Ty<'tcx>) Some(lhs) => constant(cx, cx.typeck_results(), lhs)?, None => { let min_val_const = ty.numeric_min_val(cx.tcx)?; - miri_to_const(cx, mir::ConstantKind::from_ty_const(min_val_const, cx.tcx))? + miri_to_const(cx, mir::Const::from_ty_const(min_val_const, cx.tcx))? }, }; let rhs_const = match rhs { Some(rhs) => constant(cx, cx.typeck_results(), rhs)?, None => { let max_val_const = ty.numeric_max_val(cx.tcx)?; - miri_to_const(cx, mir::ConstantKind::from_ty_const(max_val_const, cx.tcx))? + miri_to_const(cx, mir::Const::from_ty_const(max_val_const, cx.tcx))? }, }; let lhs_val = lhs_const.int_value(cx, ty)?; diff --git a/clippy_utils/src/consts.rs b/clippy_utils/src/consts.rs index c88fce22f..a136de862 100644 --- a/clippy_utils/src/consts.rs +++ b/clippy_utils/src/consts.rs @@ -21,7 +21,7 @@ use std::iter; /// A `LitKind`-like enum to fold constant `Expr`s into. #[derive(Debug, Clone)] pub enum Constant<'tcx> { - Adt(rustc_middle::mir::ConstantKind<'tcx>), + Adt(rustc_middle::mir::Const<'tcx>), /// A `String` (e.g., "abc"). Str(String), /// A binary string (e.g., `b"abc"`). @@ -482,7 +482,7 @@ impl<'a, 'tcx> ConstEvalLateContext<'a, 'tcx> { .tcx .const_eval_resolve(self.param_env, mir::UnevaluatedConst::new(def_id, args), None) .ok() - .map(|val| rustc_middle::mir::ConstantKind::from_value(val, ty))?; + .map(|val| rustc_middle::mir::Const::from_value(val, ty))?; let result = miri_to_const(self.lcx, result)?; self.source = ConstantSource::Constant; Some(result) @@ -655,10 +655,10 @@ impl<'a, 'tcx> ConstEvalLateContext<'a, 'tcx> { } } -pub fn miri_to_const<'tcx>(lcx: &LateContext<'tcx>, result: mir::ConstantKind<'tcx>) -> Option> { +pub fn miri_to_const<'tcx>(lcx: &LateContext<'tcx>, result: mir::Const<'tcx>) -> Option> { use rustc_middle::mir::ConstValue; match result { - mir::ConstantKind::Val(ConstValue::Scalar(Scalar::Int(int)), _) => match result.ty().kind() { + mir::Const::Val(ConstValue::Scalar(Scalar::Int(int)), _) => match result.ty().kind() { ty::Adt(adt_def, _) if adt_def.is_struct() => Some(Constant::Adt(result)), ty::Bool => Some(Constant::Bool(int == ScalarInt::TRUE)), ty::Uint(_) | ty::Int(_) => Some(Constant::Int(int.assert_bits(int.size()))), @@ -671,11 +671,11 @@ pub fn miri_to_const<'tcx>(lcx: &LateContext<'tcx>, result: mir::ConstantKind<'t ty::RawPtr(_) => Some(Constant::RawPtr(int.assert_bits(int.size()))), _ => None, }, - mir::ConstantKind::Val(cv, _) if matches!(result.ty().kind(), ty::Ref(_, inner_ty, _) if matches!(inner_ty.kind(), ty::Str)) => { + mir::Const::Val(cv, _) if matches!(result.ty().kind(), ty::Ref(_, inner_ty, _) if matches!(inner_ty.kind(), ty::Str)) => { let data = cv.try_get_slice_bytes_for_diagnostics(lcx.tcx)?; String::from_utf8(data.to_owned()).ok().map(Constant::Str) } - mir::ConstantKind::Val(ConstValue::Indirect { alloc_id, offset: _ }, _) => { + mir::Const::Val(ConstValue::Indirect { alloc_id, offset: _ }, _) => { let alloc = lcx.tcx.global_alloc(alloc_id).unwrap_memory(); match result.ty().kind() { ty::Adt(adt_def, _) if adt_def.is_struct() => Some(Constant::Adt(result)), @@ -714,17 +714,17 @@ pub fn miri_to_const<'tcx>(lcx: &LateContext<'tcx>, result: mir::ConstantKind<'t fn field_of_struct<'tcx>( adt_def: ty::AdtDef<'tcx>, lcx: &LateContext<'tcx>, - result: mir::ConstantKind<'tcx>, + result: mir::Const<'tcx>, field: &Ident, -) -> Option> { - if let mir::ConstantKind::Val(result, ty) = result +) -> Option> { + if let mir::Const::Val(result, ty) = result && let Some(dc) = lcx.tcx.try_destructure_mir_constant_for_diagnostics((result, ty)) && let Some(dc_variant) = dc.variant && let Some(variant) = adt_def.variants().get(dc_variant) && let Some(field_idx) = variant.fields.iter().position(|el| el.name == field.name) && let Some(&(val, ty)) = dc.fields.get(field_idx) { - Some(mir::ConstantKind::Val(val, ty)) + Some(mir::Const::Val(val, ty)) } else { None diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs index 4ef3ec196..1e464db80 100644 --- a/clippy_utils/src/lib.rs +++ b/clippy_utils/src/lib.rs @@ -97,7 +97,7 @@ use rustc_hir::{ use rustc_lexer::{tokenize, TokenKind}; use rustc_lint::{LateContext, Level, Lint, LintContext}; use rustc_middle::hir::place::PlaceBase; -use rustc_middle::mir::ConstantKind; +use rustc_middle::mir::Const; use rustc_middle::ty::adjustment::{Adjust, Adjustment, AutoBorrow}; use rustc_middle::ty::binding::BindingMode; use rustc_middle::ty::fast_reject::SimplifiedType; @@ -1510,7 +1510,7 @@ pub fn is_range_full(cx: &LateContext<'_>, expr: &Expr<'_>, container_path: Opti && let bnd_ty = subst.type_at(0) && let Some(min_val) = bnd_ty.numeric_min_val(cx.tcx) && let const_val = cx.tcx.valtree_to_const_val((bnd_ty, min_val.to_valtree())) - && let min_const_kind = ConstantKind::from_value(const_val, bnd_ty) + && let min_const_kind = Const::from_value(const_val, bnd_ty) && let Some(min_const) = miri_to_const(cx, min_const_kind) && let Some(start_const) = constant(cx, cx.typeck_results(), start) { @@ -1526,7 +1526,7 @@ pub fn is_range_full(cx: &LateContext<'_>, expr: &Expr<'_>, container_path: Opti && let bnd_ty = subst.type_at(0) && let Some(max_val) = bnd_ty.numeric_max_val(cx.tcx) && let const_val = cx.tcx.valtree_to_const_val((bnd_ty, max_val.to_valtree())) - && let max_const_kind = ConstantKind::from_value(const_val, bnd_ty) + && let max_const_kind = Const::from_value(const_val, bnd_ty) && let Some(max_const) = miri_to_const(cx, max_const_kind) && let Some(end_const) = constant(cx, cx.typeck_results(), end) { From 238dc2828ed4b2ce49a95b8093486cd01c528af9 Mon Sep 17 00:00:00 2001 From: Oli Scherer Date: Mon, 18 Sep 2023 15:30:07 +0000 Subject: [PATCH 17/26] Prevent promotion of const fn calls in inline consts --- clippy_lints/src/operators/arithmetic_side_effects.rs | 2 +- clippy_lints/src/operators/numeric_arithmetic.rs | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/clippy_lints/src/operators/arithmetic_side_effects.rs b/clippy_lints/src/operators/arithmetic_side_effects.rs index 8072aded8..a10aa65e5 100644 --- a/clippy_lints/src/operators/arithmetic_side_effects.rs +++ b/clippy_lints/src/operators/arithmetic_side_effects.rs @@ -315,7 +315,7 @@ impl<'tcx> LateLintPass<'tcx> for ArithmeticSideEffects { let body_owner_def_id = cx.tcx.hir().body_owner_def_id(body.id()); let body_owner_kind = cx.tcx.hir().body_owner_kind(body_owner_def_id); - if let hir::BodyOwnerKind::Const | hir::BodyOwnerKind::Static(_) = body_owner_kind { + if let hir::BodyOwnerKind::Const { .. } | hir::BodyOwnerKind::Static(_) = body_owner_kind { let body_span = cx.tcx.hir().span_with_body(body_owner); if let Some(span) = self.const_span && span.contains(body_span) { return; diff --git a/clippy_lints/src/operators/numeric_arithmetic.rs b/clippy_lints/src/operators/numeric_arithmetic.rs index 102845cee..80389cbf8 100644 --- a/clippy_lints/src/operators/numeric_arithmetic.rs +++ b/clippy_lints/src/operators/numeric_arithmetic.rs @@ -72,7 +72,7 @@ impl Context { let body_owner_def_id = cx.tcx.hir().body_owner_def_id(body.id()); match cx.tcx.hir().body_owner_kind(body_owner_def_id) { - hir::BodyOwnerKind::Static(_) | hir::BodyOwnerKind::Const => { + hir::BodyOwnerKind::Static(_) | hir::BodyOwnerKind::Const { .. } => { let body_span = cx.tcx.hir().span_with_body(body_owner); if let Some(span) = self.const_span { From 823bcb478bc55cacee0dcc1a9cc2b70decfa1d39 Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Thu, 14 Sep 2023 22:38:07 +0000 Subject: [PATCH 18/26] Record asyncness span in HIR --- clippy_lints/src/redundant_closure_call.rs | 7 ++++--- clippy_utils/src/lib.rs | 6 +++--- 2 files changed, 7 insertions(+), 6 deletions(-) diff --git a/clippy_lints/src/redundant_closure_call.rs b/clippy_lints/src/redundant_closure_call.rs index fc49b58e0..f42836611 100644 --- a/clippy_lints/src/redundant_closure_call.rs +++ b/clippy_lints/src/redundant_closure_call.rs @@ -10,6 +10,7 @@ use rustc_hir::intravisit::{Visitor as HirVisitor, Visitor}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::hir::nested_filter; use rustc_middle::lint::in_external_macro; +use rustc_middle::ty; use rustc_session::{declare_lint_pass, declare_tool_lint}; declare_clippy_lint! { @@ -84,7 +85,7 @@ fn find_innermost_closure<'tcx>( cx: &LateContext<'tcx>, mut expr: &'tcx hir::Expr<'tcx>, mut steps: usize, -) -> Option<(&'tcx hir::Expr<'tcx>, &'tcx hir::FnDecl<'tcx>, hir::IsAsync)> { +) -> Option<(&'tcx hir::Expr<'tcx>, &'tcx hir::FnDecl<'tcx>, ty::Asyncness)> { let mut data = None; while let hir::ExprKind::Closure(closure) = expr.kind @@ -98,9 +99,9 @@ fn find_innermost_closure<'tcx>( { expr = body.value; data = Some((body.value, closure.fn_decl, if is_async_closure(body) { - hir::IsAsync::Async + ty::Asyncness::Yes } else { - hir::IsAsync::NotAsync + ty::Asyncness::No })); steps -= 1; } diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs index 1e464db80..be1c46319 100644 --- a/clippy_utils/src/lib.rs +++ b/clippy_utils/src/lib.rs @@ -90,7 +90,7 @@ use rustc_hir::intravisit::{walk_expr, FnKind, Visitor}; use rustc_hir::LangItem::{OptionNone, OptionSome, ResultErr, ResultOk}; use rustc_hir::{ self as hir, def, Arm, ArrayLen, BindingAnnotation, Block, BlockCheckMode, Body, Closure, Destination, Expr, - ExprField, ExprKind, FnDecl, FnRetTy, GenericArgs, HirId, Impl, ImplItem, ImplItemKind, ImplItemRef, IsAsync, Item, + ExprField, ExprKind, FnDecl, FnRetTy, GenericArgs, HirId, Impl, ImplItem, ImplItemKind, ImplItemRef, Item, ItemKind, LangItem, Local, MatchSource, Mutability, Node, OwnerId, Param, Pat, PatKind, Path, PathSegment, PrimTy, QPath, Stmt, StmtKind, TraitItem, TraitItemKind, TraitItemRef, TraitRef, TyKind, UnOp, }; @@ -1958,8 +1958,8 @@ pub fn if_sequence<'tcx>(mut expr: &'tcx Expr<'tcx>) -> (Vec<&'tcx Expr<'tcx>>, /// Checks if the given function kind is an async function. pub fn is_async_fn(kind: FnKind<'_>) -> bool { match kind { - FnKind::ItemFn(_, _, header) => header.asyncness == IsAsync::Async, - FnKind::Method(_, sig) => sig.header.asyncness == IsAsync::Async, + FnKind::ItemFn(_, _, header) => header.asyncness .is_async(), + FnKind::Method(_, sig) => sig.header.asyncness.is_async(), FnKind::Closure => false, } } From 1fac304bf53f35f2088fad9b40cd919cd7a485d9 Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Sat, 9 Sep 2023 08:36:50 +0200 Subject: [PATCH 19/26] adjust how closure/generator types and rvalues are printed --- tests/ui/box_default.fixed | 2 +- tests/ui/box_default.rs | 2 +- tests/ui/crashes/ice-6251.stderr | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/tests/ui/box_default.fixed b/tests/ui/box_default.fixed index 22c034c88..69cabcb32 100644 --- a/tests/ui/box_default.fixed +++ b/tests/ui/box_default.fixed @@ -36,7 +36,7 @@ fn main() { issue_10381(); // `Box::>::default()` would be valid here, but not `Box::default()` or - // `Box::::default()` + // `Box::::default()` // // Would have a suggestion after https://github.com/rust-lang/rust/blob/fdd030127cc68afec44a8d3f6341525dd34e50ae/compiler/rustc_middle/src/ty/diagnostics.rs#L554-L563 let mut unnameable = Box::new(Option::default()); diff --git a/tests/ui/box_default.rs b/tests/ui/box_default.rs index 89e3888ba..48fa8bc33 100644 --- a/tests/ui/box_default.rs +++ b/tests/ui/box_default.rs @@ -36,7 +36,7 @@ fn main() { issue_10381(); // `Box::>::default()` would be valid here, but not `Box::default()` or - // `Box::::default()` + // `Box::::default()` // // Would have a suggestion after https://github.com/rust-lang/rust/blob/fdd030127cc68afec44a8d3f6341525dd34e50ae/compiler/rustc_middle/src/ty/diagnostics.rs#L554-L563 let mut unnameable = Box::new(Option::default()); diff --git a/tests/ui/crashes/ice-6251.stderr b/tests/ui/crashes/ice-6251.stderr index 68a5766c9..11081dc80 100644 --- a/tests/ui/crashes/ice-6251.stderr +++ b/tests/ui/crashes/ice-6251.stderr @@ -27,7 +27,7 @@ LL | fn bug() -> impl Iterator { | ^^^^^^^^^^^ expected `usize`, found closure | = note: expected type `usize` - found closure `[closure@$DIR/ice-6251.rs:4:44: 4:53]` + found closure `{closure@$DIR/ice-6251.rs:4:44: 4:53}` error: aborting due to 3 previous errors From 74573fbab98fe3eeaef63ada418613bff0a77c62 Mon Sep 17 00:00:00 2001 From: Deadbeef Date: Fri, 22 Sep 2023 00:05:45 +0000 Subject: [PATCH 20/26] fix clippy errors (ignore effects in certainty) --- clippy_utils/src/ty/type_certainty/mod.rs | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/clippy_utils/src/ty/type_certainty/mod.rs b/clippy_utils/src/ty/type_certainty/mod.rs index dc7756533..4b06b12fb 100644 --- a/clippy_utils/src/ty/type_certainty/mod.rs +++ b/clippy_utils/src/ty/type_certainty/mod.rs @@ -207,7 +207,8 @@ fn path_segment_certainty( // Checking `res_generics_def_id(..)` before calling `generics_of` avoids an ICE. if cx.tcx.res_generics_def_id(path_segment.res).is_some() { let generics = cx.tcx.generics_of(def_id); - let lhs = if (parent_certainty.is_certain() || generics.parent_count == 0) && generics.params.is_empty() + let count = generics.params.len() - generics.host_effect_index.is_some() as usize; + let lhs = if (parent_certainty.is_certain() || generics.parent_count == 0) && count == 0 { Certainty::Certain(None) } else { @@ -299,7 +300,7 @@ fn type_is_inferrable_from_arguments(cx: &LateContext<'_>, expr: &Expr<'_>) -> b // Check that all type parameters appear in the functions input types. (0..(generics.parent_count + generics.params.len()) as u32).all(|index| { - fn_sig + Some(index as usize) == generics.host_effect_index || fn_sig .inputs() .iter() .any(|input_ty| contains_param(*input_ty.skip_binder(), index)) From 5ee167e00d0c0563976239416ec344e7914455bd Mon Sep 17 00:00:00 2001 From: Oli Scherer Date: Fri, 22 Sep 2023 09:14:39 +0000 Subject: [PATCH 21/26] Add a way to decouple the implementation and the declaration of a TyCtxt method. --- clippy_utils/src/consts.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/clippy_utils/src/consts.rs b/clippy_utils/src/consts.rs index a136de862..6b1a738aa 100644 --- a/clippy_utils/src/consts.rs +++ b/clippy_utils/src/consts.rs @@ -718,7 +718,7 @@ fn field_of_struct<'tcx>( field: &Ident, ) -> Option> { if let mir::Const::Val(result, ty) = result - && let Some(dc) = lcx.tcx.try_destructure_mir_constant_for_diagnostics((result, ty)) + && let Some(dc) = lcx.tcx.try_destructure_mir_constant_for_diagnostics(result, ty) && let Some(dc_variant) = dc.variant && let Some(variant) = adt_def.variants().get(dc_variant) && let Some(field_idx) = variant.fields.iter().position(|el| el.name == field.name) From 0a2d39de2e0b87361432ae695cc84ad74d09972a Mon Sep 17 00:00:00 2001 From: Camille GILLOT Date: Sat, 28 Jan 2023 12:56:04 +0000 Subject: [PATCH 22/26] Enable drop_tracking_mir by default. --- clippy_lints/src/await_holding_invalid.rs | 43 +++++++++++++---------- 1 file changed, 25 insertions(+), 18 deletions(-) diff --git a/clippy_lints/src/await_holding_invalid.rs b/clippy_lints/src/await_holding_invalid.rs index d40a38543..7dd808a7b 100644 --- a/clippy_lints/src/await_holding_invalid.rs +++ b/clippy_lints/src/await_holding_invalid.rs @@ -2,9 +2,9 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::{match_def_path, paths}; use rustc_data_structures::fx::FxHashMap; use rustc_hir::def_id::DefId; -use rustc_hir::{AsyncGeneratorKind, Body, BodyId, GeneratorKind}; +use rustc_hir::{AsyncGeneratorKind, Body, GeneratorKind}; use rustc_lint::{LateContext, LateLintPass}; -use rustc_middle::ty::GeneratorInteriorTypeCause; +use rustc_middle::mir::GeneratorLayout; use rustc_session::{declare_tool_lint, impl_lint_pass}; use rustc_span::{sym, Span}; @@ -197,28 +197,35 @@ impl LateLintPass<'_> for AwaitHolding { fn check_body(&mut self, cx: &LateContext<'_>, body: &'_ Body<'_>) { use AsyncGeneratorKind::{Block, Closure, Fn}; if let Some(GeneratorKind::Async(Block | Closure | Fn)) = body.generator_kind { - let body_id = BodyId { - hir_id: body.value.hir_id, - }; - let typeck_results = cx.tcx.typeck_body(body_id); - self.check_interior_types( - cx, - typeck_results.generator_interior_types.as_ref().skip_binder(), - body.value.span, - ); + let def_id = cx.tcx.hir().body_owner_def_id(body.id()); + if let Some(generator_layout) = cx.tcx.mir_generator_witnesses(def_id) { + self.check_interior_types(cx, generator_layout); + } } } } impl AwaitHolding { - fn check_interior_types(&self, cx: &LateContext<'_>, ty_causes: &[GeneratorInteriorTypeCause<'_>], span: Span) { - for ty_cause in ty_causes { + fn check_interior_types(&self, cx: &LateContext<'_>, generator: &GeneratorLayout<'_>) { + for (ty_index, ty_cause) in generator.field_tys.iter_enumerated() { if let rustc_middle::ty::Adt(adt, _) = ty_cause.ty.kind() { + let await_points = || { + generator + .variant_source_info + .iter_enumerated() + .filter_map(|(variant, source_info)| { + generator.variant_fields[variant] + .raw + .contains(&ty_index) + .then_some(source_info.span) + }) + .collect::>() + }; if is_mutex_guard(cx, adt.did()) { span_lint_and_then( cx, AWAIT_HOLDING_LOCK, - ty_cause.span, + ty_cause.source_info.span, "this `MutexGuard` is held across an `await` point", |diag| { diag.help( @@ -226,7 +233,7 @@ impl AwaitHolding { `MutexGuard` is dropped before calling await", ); diag.span_note( - ty_cause.scope_span.unwrap_or(span), + await_points(), "these are all the `await` points this lock is held through", ); }, @@ -235,18 +242,18 @@ impl AwaitHolding { span_lint_and_then( cx, AWAIT_HOLDING_REFCELL_REF, - ty_cause.span, + ty_cause.source_info.span, "this `RefCell` reference is held across an `await` point", |diag| { diag.help("ensure the reference is dropped before calling `await`"); diag.span_note( - ty_cause.scope_span.unwrap_or(span), + await_points(), "these are all the `await` points this reference is held through", ); }, ); } else if let Some(disallowed) = self.def_ids.get(&adt.did()) { - emit_invalid_type(cx, ty_cause.span, disallowed); + emit_invalid_type(cx, ty_cause.source_info.span, disallowed); } } } From 19e160fe2fa0c8f04dc2b550db32f690ae27c64b Mon Sep 17 00:00:00 2001 From: Camille GILLOT Date: Sat, 28 Jan 2023 23:20:02 +0000 Subject: [PATCH 23/26] Bless clippy. --- .../await_holding_invalid_type.rs | 6 +- .../await_holding_invalid_type.stderr | 6 +- tests/ui/await_holding_lock.stderr | 131 ++++++------------ tests/ui/await_holding_refcell_ref.stderr | 63 +++------ tests/ui/future_not_send.rs | 1 + tests/ui/future_not_send.stderr | 36 ++--- 6 files changed, 82 insertions(+), 161 deletions(-) diff --git a/tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs b/tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs index fbef5c456..868cf00a8 100644 --- a/tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs +++ b/tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.rs @@ -7,8 +7,10 @@ async fn bad() -> u32 { } async fn bad_reason() -> u32 { - let _x = Ipv4Addr::new(127, 0, 0, 1); - baz().await + let x = Ipv4Addr::new(127, 0, 0, 1); + let y = baz().await; + let _x = x; + y } async fn good() -> u32 { diff --git a/tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.stderr b/tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.stderr index 6f8b04fd1..ddcd1940d 100644 --- a/tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.stderr +++ b/tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.stderr @@ -11,11 +11,11 @@ LL | let _x = String::from("hello"); error: `std::net::Ipv4Addr` may not be held across an `await` point per `clippy.toml` --> $DIR/await_holding_invalid_type.rs:10:9 | -LL | let _x = Ipv4Addr::new(127, 0, 0, 1); - | ^^ +LL | let x = Ipv4Addr::new(127, 0, 0, 1); + | ^ error: `std::string::String` may not be held across an `await` point per `clippy.toml` - --> $DIR/await_holding_invalid_type.rs:31:13 + --> $DIR/await_holding_invalid_type.rs:33:13 | LL | let _x = String::from("hi!"); | ^^ diff --git a/tests/ui/await_holding_lock.stderr b/tests/ui/await_holding_lock.stderr index 56b111c4d..478210400 100644 --- a/tests/ui/await_holding_lock.stderr +++ b/tests/ui/await_holding_lock.stderr @@ -6,13 +6,10 @@ LL | let guard = x.lock().unwrap(); | = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await note: these are all the `await` points this lock is held through - --> $DIR/await_holding_lock.rs:9:9 + --> $DIR/await_holding_lock.rs:11:15 | -LL | / let guard = x.lock().unwrap(); -LL | | -LL | | baz().await -LL | | } - | |_____^ +LL | baz().await + | ^^^^^ = note: `-D clippy::await-holding-lock` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::await_holding_lock)]` @@ -24,13 +21,10 @@ LL | let guard = x.read().unwrap(); | = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await note: these are all the `await` points this lock is held through - --> $DIR/await_holding_lock.rs:25:9 + --> $DIR/await_holding_lock.rs:27:15 | -LL | / let guard = x.read().unwrap(); -LL | | -LL | | baz().await -LL | | } - | |_____^ +LL | baz().await + | ^^^^^ error: this `MutexGuard` is held across an `await` point --> $DIR/await_holding_lock.rs:31:13 @@ -40,13 +34,10 @@ LL | let mut guard = x.write().unwrap(); | = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await note: these are all the `await` points this lock is held through - --> $DIR/await_holding_lock.rs:31:9 + --> $DIR/await_holding_lock.rs:33:15 | -LL | / let mut guard = x.write().unwrap(); -LL | | -LL | | baz().await -LL | | } - | |_____^ +LL | baz().await + | ^^^^^ error: this `MutexGuard` is held across an `await` point --> $DIR/await_holding_lock.rs:53:13 @@ -56,16 +47,13 @@ LL | let guard = x.lock().unwrap(); | = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await note: these are all the `await` points this lock is held through - --> $DIR/await_holding_lock.rs:53:9 + --> $DIR/await_holding_lock.rs:56:28 | -LL | / let guard = x.lock().unwrap(); -LL | | -LL | | -LL | | let second = baz().await; -... | -LL | | first + second + third -LL | | } - | |_____^ +LL | let second = baz().await; + | ^^^^^ +LL | +LL | let third = baz().await; + | ^^^^^ error: this `MutexGuard` is held across an `await` point --> $DIR/await_holding_lock.rs:67:17 @@ -75,13 +63,10 @@ LL | let guard = x.lock().unwrap(); | = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await note: these are all the `await` points this lock is held through - --> $DIR/await_holding_lock.rs:67:13 + --> $DIR/await_holding_lock.rs:69:19 | -LL | / let guard = x.lock().unwrap(); -LL | | -LL | | baz().await -LL | | }; - | |_________^ +LL | baz().await + | ^^^^^ error: this `MutexGuard` is held across an `await` point --> $DIR/await_holding_lock.rs:80:17 @@ -91,13 +76,10 @@ LL | let guard = x.lock().unwrap(); | = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await note: these are all the `await` points this lock is held through - --> $DIR/await_holding_lock.rs:80:13 + --> $DIR/await_holding_lock.rs:82:19 | -LL | / let guard = x.lock().unwrap(); -LL | | -LL | | baz().await -LL | | } - | |_________^ +LL | baz().await + | ^^^^^ error: this `MutexGuard` is held across an `await` point --> $DIR/await_holding_lock.rs:93:13 @@ -107,13 +89,10 @@ LL | let guard = x.lock(); | = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await note: these are all the `await` points this lock is held through - --> $DIR/await_holding_lock.rs:93:9 + --> $DIR/await_holding_lock.rs:95:15 | -LL | / let guard = x.lock(); -LL | | -LL | | baz().await -LL | | } - | |_____^ +LL | baz().await + | ^^^^^ error: this `MutexGuard` is held across an `await` point --> $DIR/await_holding_lock.rs:109:13 @@ -123,13 +102,10 @@ LL | let guard = x.read(); | = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await note: these are all the `await` points this lock is held through - --> $DIR/await_holding_lock.rs:109:9 + --> $DIR/await_holding_lock.rs:111:15 | -LL | / let guard = x.read(); -LL | | -LL | | baz().await -LL | | } - | |_____^ +LL | baz().await + | ^^^^^ error: this `MutexGuard` is held across an `await` point --> $DIR/await_holding_lock.rs:115:13 @@ -139,13 +115,10 @@ LL | let mut guard = x.write(); | = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await note: these are all the `await` points this lock is held through - --> $DIR/await_holding_lock.rs:115:9 + --> $DIR/await_holding_lock.rs:117:15 | -LL | / let mut guard = x.write(); -LL | | -LL | | baz().await -LL | | } - | |_____^ +LL | baz().await + | ^^^^^ error: this `MutexGuard` is held across an `await` point --> $DIR/await_holding_lock.rs:137:13 @@ -155,16 +128,13 @@ LL | let guard = x.lock(); | = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await note: these are all the `await` points this lock is held through - --> $DIR/await_holding_lock.rs:137:9 + --> $DIR/await_holding_lock.rs:140:28 | -LL | / let guard = x.lock(); -LL | | -LL | | -LL | | let second = baz().await; -... | -LL | | first + second + third -LL | | } - | |_____^ +LL | let second = baz().await; + | ^^^^^ +LL | +LL | let third = baz().await; + | ^^^^^ error: this `MutexGuard` is held across an `await` point --> $DIR/await_holding_lock.rs:151:17 @@ -174,13 +144,10 @@ LL | let guard = x.lock(); | = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await note: these are all the `await` points this lock is held through - --> $DIR/await_holding_lock.rs:151:13 + --> $DIR/await_holding_lock.rs:153:19 | -LL | / let guard = x.lock(); -LL | | -LL | | baz().await -LL | | }; - | |_________^ +LL | baz().await + | ^^^^^ error: this `MutexGuard` is held across an `await` point --> $DIR/await_holding_lock.rs:164:17 @@ -190,13 +157,10 @@ LL | let guard = x.lock(); | = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await note: these are all the `await` points this lock is held through - --> $DIR/await_holding_lock.rs:164:13 + --> $DIR/await_holding_lock.rs:166:19 | -LL | / let guard = x.lock(); -LL | | -LL | | baz().await -LL | | } - | |_________^ +LL | baz().await + | ^^^^^ error: this `MutexGuard` is held across an `await` point --> $DIR/await_holding_lock.rs:185:9 @@ -206,15 +170,10 @@ LL | let mut guard = x.lock().unwrap(); | = help: consider using an async-aware `Mutex` type or ensuring the `MutexGuard` is dropped before calling await note: these are all the `await` points this lock is held through - --> $DIR/await_holding_lock.rs:185:5 + --> $DIR/await_holding_lock.rs:189:11 | -LL | / let mut guard = x.lock().unwrap(); -LL | | -LL | | *guard += 1; -LL | | drop(guard); -LL | | baz().await; -LL | | } - | |_^ +LL | baz().await; + | ^^^^^ error: aborting due to 13 previous errors diff --git a/tests/ui/await_holding_refcell_ref.stderr b/tests/ui/await_holding_refcell_ref.stderr index 6b7e1d1af..9264af93d 100644 --- a/tests/ui/await_holding_refcell_ref.stderr +++ b/tests/ui/await_holding_refcell_ref.stderr @@ -6,13 +6,10 @@ LL | let b = x.borrow(); | = help: ensure the reference is dropped before calling `await` note: these are all the `await` points this reference is held through - --> $DIR/await_holding_refcell_ref.rs:6:5 + --> $DIR/await_holding_refcell_ref.rs:8:11 | -LL | / let b = x.borrow(); -LL | | -LL | | baz().await -LL | | } - | |_^ +LL | baz().await + | ^^^^^ = note: `-D clippy::await-holding-refcell-ref` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::await_holding_refcell_ref)]` @@ -24,13 +21,10 @@ LL | let b = x.borrow_mut(); | = help: ensure the reference is dropped before calling `await` note: these are all the `await` points this reference is held through - --> $DIR/await_holding_refcell_ref.rs:12:5 + --> $DIR/await_holding_refcell_ref.rs:14:11 | -LL | / let b = x.borrow_mut(); -LL | | -LL | | baz().await -LL | | } - | |_^ +LL | baz().await + | ^^^^^ error: this `RefCell` reference is held across an `await` point --> $DIR/await_holding_refcell_ref.rs:34:9 @@ -40,16 +34,13 @@ LL | let b = x.borrow_mut(); | = help: ensure the reference is dropped before calling `await` note: these are all the `await` points this reference is held through - --> $DIR/await_holding_refcell_ref.rs:34:5 + --> $DIR/await_holding_refcell_ref.rs:37:24 | -LL | / let b = x.borrow_mut(); -LL | | -LL | | -LL | | let second = baz().await; -... | -LL | | first + second + third -LL | | } - | |_^ +LL | let second = baz().await; + | ^^^^^ +LL | +LL | let third = baz().await; + | ^^^^^ error: this `RefCell` reference is held across an `await` point --> $DIR/await_holding_refcell_ref.rs:47:9 @@ -59,16 +50,10 @@ LL | let b = x.borrow_mut(); | = help: ensure the reference is dropped before calling `await` note: these are all the `await` points this reference is held through - --> $DIR/await_holding_refcell_ref.rs:47:5 + --> $DIR/await_holding_refcell_ref.rs:50:24 | -LL | / let b = x.borrow_mut(); -LL | | -LL | | -LL | | let second = baz().await; -... | -LL | | first + second + third -LL | | } - | |_^ +LL | let second = baz().await; + | ^^^^^ error: this `RefCell` reference is held across an `await` point --> $DIR/await_holding_refcell_ref.rs:63:13 @@ -78,13 +63,10 @@ LL | let b = x.borrow_mut(); | = help: ensure the reference is dropped before calling `await` note: these are all the `await` points this reference is held through - --> $DIR/await_holding_refcell_ref.rs:63:9 + --> $DIR/await_holding_refcell_ref.rs:65:15 | -LL | / let b = x.borrow_mut(); -LL | | -LL | | baz().await -LL | | }; - | |_____^ +LL | baz().await + | ^^^^^ error: this `RefCell` reference is held across an `await` point --> $DIR/await_holding_refcell_ref.rs:76:13 @@ -94,13 +76,10 @@ LL | let b = x.borrow_mut(); | = help: ensure the reference is dropped before calling `await` note: these are all the `await` points this reference is held through - --> $DIR/await_holding_refcell_ref.rs:76:9 + --> $DIR/await_holding_refcell_ref.rs:78:15 | -LL | / let b = x.borrow_mut(); -LL | | -LL | | baz().await -LL | | } - | |_____^ +LL | baz().await + | ^^^^^ error: aborting due to 6 previous errors diff --git a/tests/ui/future_not_send.rs b/tests/ui/future_not_send.rs index 06090e271..9274340b5 100644 --- a/tests/ui/future_not_send.rs +++ b/tests/ui/future_not_send.rs @@ -59,6 +59,7 @@ where { let rt = &t; async { true }.await; + let _ = rt; t } diff --git a/tests/ui/future_not_send.stderr b/tests/ui/future_not_send.stderr index e417de723..f43e3c8ff 100644 --- a/tests/ui/future_not_send.stderr +++ b/tests/ui/future_not_send.stderr @@ -12,19 +12,12 @@ LL | async fn private_future(rc: Rc<[u8]>, cell: &Cell) -> bool { LL | LL | async { true }.await | ^^^^^ await occurs here, with `rc` maybe used later -LL | } - | - `rc` is later dropped here = note: `std::rc::Rc<[u8]>` doesn't implement `std::marker::Send` -note: future is not `Send` as this value is used across an await - --> $DIR/future_not_send.rs:9:20 +note: captured value is not `Send` because `&` references cannot be sent unless their referent is `Sync` + --> $DIR/future_not_send.rs:7:39 | LL | async fn private_future(rc: Rc<[u8]>, cell: &Cell) -> bool { - | ---- has type `&std::cell::Cell` which is not `Send` -LL | -LL | async { true }.await - | ^^^^^ await occurs here, with `cell` maybe used later -LL | } - | - `cell` is later dropped here + | ^^^^ has type `&std::cell::Cell` which is not `Send`, because `std::cell::Cell` is not `Sync` = note: `std::cell::Cell` doesn't implement `std::marker::Sync` = note: `-D clippy::future-not-send` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::future_not_send)]` @@ -43,8 +36,6 @@ LL | pub async fn public_future(rc: Rc<[u8]>) { LL | LL | async { true }.await; | ^^^^^ await occurs here, with `rc` maybe used later -LL | } - | - `rc` is later dropped here = note: `std::rc::Rc<[u8]>` doesn't implement `std::marker::Send` error: future cannot be sent between threads safely @@ -93,9 +84,6 @@ LL | async fn private_future(&self) -> usize { LL | LL | async { true }.await; | ^^^^^ await occurs here, with `&self` maybe used later -LL | self.rc.len() -LL | } - | - `&self` is later dropped here = note: `std::rc::Rc<[u8]>` doesn't implement `std::marker::Sync` error: future cannot be sent between threads safely @@ -104,16 +92,11 @@ error: future cannot be sent between threads safely LL | pub async fn public_future(&self) { | ^ future returned by `public_future` is not `Send` | -note: future is not `Send` as this value is used across an await - --> $DIR/future_not_send.rs:46:31 +note: captured value is not `Send` because `&` references cannot be sent unless their referent is `Sync` + --> $DIR/future_not_send.rs:44:32 | LL | pub async fn public_future(&self) { - | ----- has type `&Dummy` which is not `Send` -LL | -LL | self.private_future().await; - | ^^^^^ await occurs here, with `&self` maybe used later -LL | } - | - `&self` is later dropped here + | ^^^^^ has type `&Dummy` which is not `Send`, because `Dummy` is not `Sync` = note: `std::rc::Rc<[u8]>` doesn't implement `std::marker::Sync` error: future cannot be sent between threads safely @@ -129,19 +112,16 @@ LL | let rt = &t; | -- has type `&T` which is not `Send` LL | async { true }.await; | ^^^^^ await occurs here, with `rt` maybe used later -LL | t -LL | } - | - `rt` is later dropped here = note: `T` doesn't implement `std::marker::Sync` error: future cannot be sent between threads safely - --> $DIR/future_not_send.rs:72:34 + --> $DIR/future_not_send.rs:73:34 | LL | async fn unclear_future(t: T) {} | ^ future returned by `unclear_future` is not `Send` | note: captured value is not `Send` - --> $DIR/future_not_send.rs:72:28 + --> $DIR/future_not_send.rs:73:28 | LL | async fn unclear_future(t: T) {} | ^ has type `T` which is not `Send` From e2669b27f3cd32fbf956bfcae96c3e19f49108a1 Mon Sep 17 00:00:00 2001 From: Camille GILLOT Date: Thu, 3 Aug 2023 13:47:04 +0000 Subject: [PATCH 24/26] Remove GeneratorWitness and rename GeneratorWitnessMIR. --- clippy_lints/src/dereference.rs | 1 - 1 file changed, 1 deletion(-) diff --git a/clippy_lints/src/dereference.rs b/clippy_lints/src/dereference.rs index 8090f821d..fe37fd4a0 100644 --- a/clippy_lints/src/dereference.rs +++ b/clippy_lints/src/dereference.rs @@ -940,7 +940,6 @@ impl TyCoercionStability { | ty::FnDef(..) | ty::Generator(..) | ty::GeneratorWitness(..) - | ty::GeneratorWitnessMIR(..) | ty::Closure(..) | ty::Never | ty::Tuple(_) From 5eb7604482f8f3264605c0e440861223576d6faf Mon Sep 17 00:00:00 2001 From: Philipp Krones Date: Mon, 25 Sep 2023 10:26:33 +0200 Subject: [PATCH 25/26] Bump nightly version -> 2023-09-25 --- rust-toolchain | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/rust-toolchain b/rust-toolchain index 9f5116eb7..5ce22b65f 100644 --- a/rust-toolchain +++ b/rust-toolchain @@ -1,3 +1,3 @@ [toolchain] -channel = "nightly-2023-09-07" +channel = "nightly-2023-09-25" components = ["cargo", "llvm-tools", "rust-src", "rust-std", "rustc", "rustc-dev", "rustfmt"] From 903add0c11a0205314bf49fff6851fea3478449c Mon Sep 17 00:00:00 2001 From: Philipp Krones Date: Mon, 25 Sep 2023 10:31:51 +0200 Subject: [PATCH 26/26] Fix dogfood fallout --- clippy_lints/src/doc.rs | 3 ++- clippy_lints/src/raw_strings.rs | 2 +- clippy_utils/src/ty/type_certainty/mod.rs | 2 +- 3 files changed, 4 insertions(+), 3 deletions(-) diff --git a/clippy_lints/src/doc.rs b/clippy_lints/src/doc.rs index bf2add6aa..e789e0da6 100644 --- a/clippy_lints/src/doc.rs +++ b/clippy_lints/src/doc.rs @@ -459,7 +459,7 @@ struct Fragments<'a> { impl Fragments<'_> { fn span(self, cx: &LateContext<'_>, range: Range) -> Option { - source_span_for_markdown_range(cx.tcx, &self.doc, &range, &self.fragments) + source_span_for_markdown_range(cx.tcx, self.doc, &range, self.fragments) } } @@ -513,6 +513,7 @@ fn check_attrs(cx: &LateContext<'_>, valid_idents: &FxHashSet, attrs: &[ const RUST_CODE: &[&str] = &["rust", "no_run", "should_panic", "compile_fail"]; +#[allow(clippy::too_many_lines)] // Only a big match statement fn check_doc<'a, Events: Iterator, Range)>>( cx: &LateContext<'_>, valid_idents: &FxHashSet, diff --git a/clippy_lints/src/raw_strings.rs b/clippy_lints/src/raw_strings.rs index ba80e37d3..2895595e0 100644 --- a/clippy_lints/src/raw_strings.rs +++ b/clippy_lints/src/raw_strings.rs @@ -93,7 +93,7 @@ impl EarlyLintPass for RawStrings { diag.span_suggestion( start, "use a string literal instead", - format!("\"{}\"", str), + format!("\"{str}\""), Applicability::MachineApplicable, ); } else { diff --git a/clippy_utils/src/ty/type_certainty/mod.rs b/clippy_utils/src/ty/type_certainty/mod.rs index 713158c3a..d05d9e764 100644 --- a/clippy_utils/src/ty/type_certainty/mod.rs +++ b/clippy_utils/src/ty/type_certainty/mod.rs @@ -207,7 +207,7 @@ fn path_segment_certainty( // Checking `res_generics_def_id(..)` before calling `generics_of` avoids an ICE. if cx.tcx.res_generics_def_id(path_segment.res).is_some() { let generics = cx.tcx.generics_of(def_id); - let count = generics.params.len() - generics.host_effect_index.is_some() as usize; + let count = generics.params.len() - usize::from(generics.host_effect_index.is_some()); let lhs = if (parent_certainty.is_certain() || generics.parent_count == 0) && count == 0 { Certainty::Certain(None) } else {