mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-10 15:14:29 +00:00
Auto merge of #12900 - Alexendoo:no-lazy-static, r=llogiq
Remove `lazy_static` mention I planned to replace any mention with `LazyLock` but I think `thread_local` is more appropriate here - `const`s that aren't `Sync` wouldn't be able to go in a `lazy_static`/`static LazyLock` either Also removed a test file that was mostly commented out so wasn't testing anything changelog: none
This commit is contained in:
commit
0ea88b90d8
7 changed files with 69 additions and 101 deletions
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@ -7,7 +7,7 @@ use std::ptr;
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use clippy_utils::diagnostics::span_lint_and_then;
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use clippy_utils::in_constant;
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use clippy_utils::macros::macro_backtrace;
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use clippy_utils::ty::InteriorMut;
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use clippy_utils::ty::{implements_trait, InteriorMut};
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use rustc_hir::def::{DefKind, Res};
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use rustc_hir::def_id::DefId;
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use rustc_hir::{
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@ -18,7 +18,7 @@ use rustc_middle::mir::interpret::{ErrorHandled, EvalToValTreeResult, GlobalId};
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use rustc_middle::ty::adjustment::Adjust;
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use rustc_middle::ty::{self, Ty, TyCtxt};
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use rustc_session::impl_lint_pass;
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use rustc_span::{sym, InnerSpan, Span, DUMMY_SP};
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use rustc_span::{sym, Span, DUMMY_SP};
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use rustc_target::abi::VariantIdx;
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// FIXME: this is a correctness problem but there's no suitable
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@ -127,19 +127,19 @@ declare_clippy_lint! {
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}
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#[derive(Copy, Clone)]
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enum Source {
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Item { item: Span },
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enum Source<'tcx> {
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Item { item: Span, ty: Ty<'tcx> },
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Assoc { item: Span },
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Expr { expr: Span },
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}
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impl Source {
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impl Source<'_> {
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#[must_use]
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fn lint(&self) -> (&'static Lint, &'static str, Span) {
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match self {
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Self::Item { item } | Self::Assoc { item, .. } => (
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Self::Item { item, .. } | Self::Assoc { item, .. } => (
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DECLARE_INTERIOR_MUTABLE_CONST,
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"a `const` item should never be interior mutable",
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"a `const` item should not be interior mutable",
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*item,
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),
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Self::Expr { expr } => (
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@ -151,16 +151,24 @@ impl Source {
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}
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}
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fn lint(cx: &LateContext<'_>, source: Source) {
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fn lint<'tcx>(cx: &LateContext<'tcx>, source: Source<'tcx>) {
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let (lint, msg, span) = source.lint();
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span_lint_and_then(cx, lint, span, msg, |diag| {
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if span.from_expansion() {
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return; // Don't give suggestions into macros.
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}
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match source {
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Source::Item { .. } => {
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let const_kw_span = span.from_inner(InnerSpan::new(0, 5));
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diag.span_label(const_kw_span, "make this a static item (maybe with lazy_static)");
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Source::Item { ty, .. } => {
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let Some(sync_trait) = cx.tcx.lang_items().sync_trait() else {
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return;
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};
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if implements_trait(cx, ty, sync_trait, &[]) {
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diag.help("consider making this a static item");
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} else {
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diag.help(
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"consider making this `Sync` so that it can go in a static item or using a `thread_local`",
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);
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}
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},
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Source::Assoc { .. } => (),
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Source::Expr { .. } => {
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@ -311,7 +319,7 @@ impl<'tcx> LateLintPass<'tcx> for NonCopyConst<'tcx> {
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&& self.interior_mut.is_interior_mut_ty(cx, ty)
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&& Self::is_value_unfrozen_poly(cx, body_id, ty)
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{
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lint(cx, Source::Item { item: it.span });
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lint(cx, Source::Item { item: it.span, ty });
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}
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}
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}
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|
|
|
@ -1,5 +1,3 @@
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const UNINIT: core::mem::MaybeUninit<core::cell::Cell<&'static ()>> = core::mem::MaybeUninit::uninit();
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//~^ ERROR: a `const` item should never be interior mutable
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//~| NOTE: `-D clippy::declare-interior-mutable-const` implied by `-D warnings`
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fn main() {}
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|
|
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@ -1,11 +1,10 @@
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error: a `const` item should never be interior mutable
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error: a `const` item should not be interior mutable
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--> tests/ui/crashes/ice-9445.rs:1:1
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|
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LL | const UNINIT: core::mem::MaybeUninit<core::cell::Cell<&'static ()>> = core::mem::MaybeUninit::uninit();
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| -----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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| |
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| make this a static item (maybe with lazy_static)
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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|
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= help: consider making this `Sync` so that it can go in a static item or using a `thread_local`
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= note: `-D clippy::declare-interior-mutable-const` implied by `-D warnings`
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= help: to override `-D warnings` add `#[allow(clippy::declare_interior_mutable_const)]`
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|
|
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@ -1,33 +0,0 @@
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#![deny(clippy::mut_mut, clippy::zero_ptr)]
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#![allow(dead_code)]
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// FIXME: compiletest + extern crates doesn't work together. To make this test work, it would need
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// the following three lines and the lazy_static crate.
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//
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// #[macro_use]
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// extern crate lazy_static;
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// use std::collections::HashMap;
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/// ensure that we don't suggest `is_null` inside constants
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/// FIXME: once const fn is stable, suggest these functions again in constants
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const BAA: *const i32 = 0 as *const i32;
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static mut BAR: *const i32 = BAA;
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static mut FOO: *const i32 = 0 as *const i32;
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#[allow(unused_variables, unused_mut)]
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fn main() {
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/*
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lazy_static! {
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static ref MUT_MAP : HashMap<usize, &'static str> = {
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let mut m = HashMap::new();
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m.insert(0, "zero");
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m
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};
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static ref MUT_COUNT : usize = MUT_MAP.len();
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}
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assert_eq!(*MUT_COUNT, 1);
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*/
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// FIXME: don't lint in array length, requires `check_body`
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//let _ = [""; (42.0 < f32::NAN) as usize];
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}
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@ -1,87 +1,84 @@
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error: a `const` item should never be interior mutable
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error: a `const` item should not be interior mutable
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--> tests/ui/declare_interior_mutable_const/enums.rs:12:1
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|
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LL | const UNFROZEN_VARIANT: OptionalCell = OptionalCell::Unfrozen(Cell::new(true));
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| -----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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| |
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| make this a static item (maybe with lazy_static)
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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|
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= help: consider making this `Sync` so that it can go in a static item or using a `thread_local`
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= note: `-D clippy::declare-interior-mutable-const` implied by `-D warnings`
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= help: to override `-D warnings` add `#[allow(clippy::declare_interior_mutable_const)]`
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error: a `const` item should never be interior mutable
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error: a `const` item should not be interior mutable
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--> tests/ui/declare_interior_mutable_const/enums.rs:23:1
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|
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LL | const UNFROZEN_VARIANT_FROM_FN: OptionalCell = unfrozen_variant();
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| -----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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| |
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| make this a static item (maybe with lazy_static)
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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|
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= help: consider making this `Sync` so that it can go in a static item or using a `thread_local`
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error: a `const` item should never be interior mutable
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error: a `const` item should not be interior mutable
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--> tests/ui/declare_interior_mutable_const/enums.rs:45:1
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|
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LL | const NESTED_UNFROZEN_VARIANT: NestedOutermost = NestedOutermost {
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| ^----
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| |
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| _make this a static item (maybe with lazy_static)
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| |
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LL | / const NESTED_UNFROZEN_VARIANT: NestedOutermost = NestedOutermost {
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LL | |
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LL | | outer: NestedOuter::NestedInner(NestedInner {
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LL | | inner: NestedInnermost::Unfrozen(AtomicUsize::new(2)),
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LL | | }),
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LL | | };
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| |__^
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|
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= help: consider making this a static item
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error: a `const` item should never be interior mutable
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error: a `const` item should not be interior mutable
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--> tests/ui/declare_interior_mutable_const/enums.rs:60:5
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|
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LL | const TO_BE_UNFROZEN_VARIANT: OptionalCell;
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: a `const` item should never be interior mutable
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error: a `const` item should not be interior mutable
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--> tests/ui/declare_interior_mutable_const/enums.rs:61:5
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|
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LL | const TO_BE_FROZEN_VARIANT: OptionalCell;
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: a `const` item should never be interior mutable
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error: a `const` item should not be interior mutable
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--> tests/ui/declare_interior_mutable_const/enums.rs:64:5
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|
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LL | const DEFAULTED_ON_UNFROZEN_VARIANT: OptionalCell = OptionalCell::Unfrozen(Cell::new(false));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: a `const` item should never be interior mutable
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error: a `const` item should not be interior mutable
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--> tests/ui/declare_interior_mutable_const/enums.rs:90:5
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|
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LL | const TO_BE_UNFROZEN_VARIANT: Option<Self::ToBeUnfrozen> = Some(Self::ToBeUnfrozen::new(4));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: a `const` item should never be interior mutable
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error: a `const` item should not be interior mutable
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--> tests/ui/declare_interior_mutable_const/enums.rs:102:5
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|
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LL | const UNFROZEN_VARIANT: BothOfCellAndGeneric<T> = BothOfCellAndGeneric::Unfrozen(Cell::new(std::ptr::null()));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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|
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error: a `const` item should never be interior mutable
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error: a `const` item should not be interior mutable
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--> tests/ui/declare_interior_mutable_const/enums.rs:105:5
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|
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LL | const GENERIC_VARIANT: BothOfCellAndGeneric<T> = BothOfCellAndGeneric::Generic(std::ptr::null());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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|
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error: a `const` item should never be interior mutable
|
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error: a `const` item should not be interior mutable
|
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--> tests/ui/declare_interior_mutable_const/enums.rs:111:5
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|
|
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LL | const NO_ENUM: Cell<*const T> = Cell::new(std::ptr::null());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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|
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error: a `const` item should never be interior mutable
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error: a `const` item should not be interior mutable
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--> tests/ui/declare_interior_mutable_const/enums.rs:118:5
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|
|
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LL | / const UNFROZEN_VARIANT: BothOfCellAndGeneric<Self::AssocType> =
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LL | | BothOfCellAndGeneric::Unfrozen(Cell::new(std::ptr::null()));
|
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| |____________________________________________________________________^
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||||
|
||||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/enums.rs:120:5
|
||||
|
|
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LL | const GENERIC_VARIANT: BothOfCellAndGeneric<Self::AssocType> = BothOfCellAndGeneric::Generic(std::ptr::null());
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|
|
|
@ -1,31 +1,30 @@
|
|||
error: a `const` item should never be interior mutable
|
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error: a `const` item should not be interior mutable
|
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--> tests/ui/declare_interior_mutable_const/others.rs:9:1
|
||||
|
|
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LL | const ATOMIC: AtomicUsize = AtomicUsize::new(5);
|
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| -----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
| |
|
||||
| make this a static item (maybe with lazy_static)
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
|
||||
= help: consider making this a static item
|
||||
= note: `-D clippy::declare-interior-mutable-const` implied by `-D warnings`
|
||||
= help: to override `-D warnings` add `#[allow(clippy::declare_interior_mutable_const)]`
|
||||
|
||||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/others.rs:10:1
|
||||
|
|
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LL | const CELL: Cell<usize> = Cell::new(6);
|
||||
| -----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
| |
|
||||
| make this a static item (maybe with lazy_static)
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
|
||||
= help: consider making this `Sync` so that it can go in a static item or using a `thread_local`
|
||||
|
||||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/others.rs:11:1
|
||||
|
|
||||
LL | const ATOMIC_TUPLE: ([AtomicUsize; 1], Vec<AtomicUsize>, u8) = ([ATOMIC], Vec::new(), 7);
|
||||
| -----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
| |
|
||||
| make this a static item (maybe with lazy_static)
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
|
||||
= help: consider making this a static item
|
||||
|
||||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/others.rs:16:9
|
||||
|
|
||||
LL | const $name: $ty = $e;
|
||||
|
@ -36,7 +35,7 @@ LL | declare_const!(_ONCE: Once = Once::new());
|
|||
|
|
||||
= note: this error originates in the macro `declare_const` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
|
||||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/others.rs:44:13
|
||||
|
|
||||
LL | const _BAZ: Cell<usize> = Cell::new(0);
|
||||
|
|
|
@ -1,4 +1,4 @@
|
|||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/traits.rs:16:5
|
||||
|
|
||||
LL | const ATOMIC: AtomicUsize;
|
||||
|
@ -7,7 +7,7 @@ LL | const ATOMIC: AtomicUsize;
|
|||
= note: `-D clippy::declare-interior-mutable-const` implied by `-D warnings`
|
||||
= help: to override `-D warnings` add `#[allow(clippy::declare_interior_mutable_const)]`
|
||||
|
||||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/traits.rs:9:9
|
||||
|
|
||||
LL | const $name: $ty = $e;
|
||||
|
@ -18,67 +18,67 @@ LL | declare_const!(ANOTHER_ATOMIC: AtomicUsize = Self::ATOMIC);
|
|||
|
|
||||
= note: this error originates in the macro `declare_const` (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
|
||||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/traits.rs:44:5
|
||||
|
|
||||
LL | const TO_BE_CONCRETE: AtomicUsize = AtomicUsize::new(11);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/traits.rs:69:5
|
||||
|
|
||||
LL | const TO_BE_UNFROZEN: Self::ToBeUnfrozen = AtomicUsize::new(13);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/traits.rs:70:5
|
||||
|
|
||||
LL | const WRAPPED_TO_BE_UNFROZEN: Wrapper<Self::ToBeUnfrozen> = Wrapper(AtomicUsize::new(14));
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/traits.rs:89:5
|
||||
|
|
||||
LL | const BOUNDED: T::ToBeBounded;
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/traits.rs:117:5
|
||||
|
|
||||
LL | const SELF: Self = AtomicUsize::new(17);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/traits.rs:118:5
|
||||
|
|
||||
LL | const WRAPPED_SELF: Option<Self> = Some(AtomicUsize::new(21));
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/traits.rs:124:5
|
||||
|
|
||||
LL | const DIRECT: Cell<T>;
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/traits.rs:125:5
|
||||
|
|
||||
LL | const INDIRECT: Cell<*const T>;
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
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--> tests/ui/declare_interior_mutable_const/traits.rs:129:5
|
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|
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LL | const DIRECT: Cell<T> = Cell::new(T::DEFAULT);
|
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
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error: a `const` item should never be interior mutable
|
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error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/traits.rs:141:5
|
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|
|
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LL | const ATOMIC: AtomicUsize = AtomicUsize::new(18);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
error: a `const` item should never be interior mutable
|
||||
error: a `const` item should not be interior mutable
|
||||
--> tests/ui/declare_interior_mutable_const/traits.rs:147:5
|
||||
|
|
||||
LL | const BOUNDED_ASSOC_TYPE: T::ToBeBounded = AtomicUsize::new(19);
|
||||
|
|
Loading…
Reference in a new issue