Commit graph

3344 commits

Author SHA1 Message Date
Yoshitomo Nakanishi
9b0c1ebc18 Change to span_lint_and_sugg from span_lint_and_help 2021-02-16 18:07:09 +09:00
Yoshitomo Nakanishi
1f8ee3cc19 Handle struct ctor case 2021-02-16 11:20:51 +09:00
Yoshitomo Nakanishi
fb91c76586 Add more tests for default_numeric_fallback 2021-02-15 23:33:27 +09:00
Yoshitomo Nakanishi
93796b2346 Add some restrictions to default_numeric_fallback to avoid FNs 2021-02-15 14:43:37 +09:00
bors
2f19f5f0d7 Auto merge of #6741 - ThibsG:BlockInIfConditions1141, r=flip1995
Do not lint when the closure is called using an iterator

Fix FP when the closure is used in an iterator for `blocks_in_if_conditions` lint

FIxes: #1141

changelog: none
2021-02-14 15:55:12 +00:00
ThibsG
12025506d6 Do not lint when the closure is called using an iterator 2021-02-14 16:21:12 +01:00
bors
9c3b43efdd Auto merge of #6701 - camsteffen:collapsible-if, r=flip1995
Fix collapsible_if with attributes

changelog: Fix collapsible_if FP with attributes

Fixes #6593
2021-02-14 14:43:35 +00:00
bors
eb80ac4e72 Auto merge of #6697 - camsteffen:vec-init-push-fp, r=flip1995
Fix vec_init_then_push false positives

changelog: Fix vec_init_then_push false positives

Fixes #6615
2021-02-14 14:27:13 +00:00
Yoshitomo Nakanishi
87109bb4f5 Add minimal reproducer for ICE in #6179 2021-02-14 01:20:30 +09:00
boolean_coercion
d36fe85569 Made parens addition smarter and added tests with bless 2021-02-13 00:33:08 +02:00
bors
047f3e16bf Auto merge of #6700 - daxpedda:panics-doc-unreachable, r=llogiq
Fix missing_panics_doc warning on `unreachable!`.

Fixes #6699.

Are there any other test-cases I should cover?

changelog: [`missing_panics_doc`](https://rust-lang.github.io/rust-clippy/master/index.html#missing_panics_doc): No longer lints on [`unreachable!`](https://doc.rust-lang.org/std/macro.unreachable.html)
2021-02-12 20:48:05 +00:00
boolean_coercion
642efabfbb Fixed typos and updated to matches! where applicable 2021-02-12 11:54:22 +02:00
boolean_coercion
d1a627ab3b Ran bless and rustfmt 2021-02-12 11:54:22 +02:00
boolean_coercion
0b31b470ad Changed applicability to MaybeIncorrect because of surrounding braces 2021-02-12 11:54:22 +02:00
boolean_coercion
64729390a1 Implemented majority of from_str_radix_10 2021-02-12 11:54:22 +02:00
boolean_coercion
b80ac2af9c Added boilerplate 2021-02-12 11:54:22 +02:00
bors
605e9ba3d7 Auto merge of #6179 - flip1995:rewrite_use_self, r=phansch
Rework use_self impl based on ty::Ty comparison #3410 | Take 2

This builds on top of #5531

I already reviewed and approved the commits by `@montrivo.` So only the review of my commits should be necessary.

I would also appreciate your review `@montrivo,` since you are familiar with the challenges here.

Fixes #3410 and Fixes #4143 (same problem)
Fixes #2843
Fixes #3859
Fixes #4734 and fixes #6221
Fixes #4305
Fixes #5078 (even at expression level now 🎉)
Fixes #3881 and Fixes #4887 (same problem)
Fixes #3909

Not yet: #4140 (test added)

All the credit for the fixes goes to `@montrivo.` I only refactored and copy and pasted his code.

changelog: rewrite [`use_self`] lint and fix multiple (8) FPs. One to go.
2021-02-12 06:09:07 +00:00
flip1995
8b9f4a0d34 Merge commit '70c0f90453701e7d6d9b99aaa1fc6a765937b736' into clippyup 2021-02-11 15:04:38 +01:00
flip1995
00f9981f5c
Merge remote-tracking branch 'upstream/master' into rustup 2021-02-11 14:36:52 +01:00
daxpedda
37f978299e
Add test for checking a combination of unreachable and panic. 2021-02-10 20:55:31 +01:00
bors
3784cdf98e Auto merge of #6657 - ThibsG:FromIterParens, r=llogiq
Fix suggestions that need parens in `from_iter_instead_of_collect` lint

Fixes broken suggestions that need parens (i.e.: range)

Fixes: #6648

changelog: none
2021-02-10 19:37:27 +00:00
bors
b5e4389f53 Auto merge of #6695 - TaKO8Ki:add-bytes-nth, r=phansch
New lint: `bytes_nth`

This pull request adds a new lint named `bytes_nth`.

---
closes: https://github.com/rust-lang/rust-clippy/issues/6391

changelog: Added a new lint: `bytes_nth`
2021-02-10 13:54:33 +00:00
flip1995
da65d8166f
Don't trigger use_self in macros 2021-02-10 11:57:28 +01:00
flip1995
bb40db7adc
Update test files 2021-02-10 11:57:28 +01:00
Tim Nielens
fc334fb8f4
use_self - fix issue with hir_ty_to_ty 2021-02-10 11:57:28 +01:00
Tim Nielens
347b01eb1f
rework use_self impl based on ty::Ty comparison 2021-02-10 11:57:27 +01:00
Takayuki Maeda
5996ae1cfc add some test cases 2021-02-10 16:15:29 +09:00
ThibsG
b932587c5d Add better turbofish extractor 2021-02-09 17:43:49 +01:00
Ömer Sinan Ağacan
34b373d309 Rename HIR UnOp variants
This renames the variants in HIR UnOp from

    enum UnOp {
        UnDeref,
        UnNot,
        UnNeg,
    }

to

    enum UnOp {
        Deref,
        Not,
        Neg,
    }

Motivations:

- This is more consistent with the rest of the code base where most enum
  variants don't have a prefix.

- These variants are never used without the `UnOp` prefix so the extra
  `Un` prefix doesn't help with readability. E.g. we don't have any
  `UnDeref`s in the code, we only have `UnOp::UnDeref`.

- MIR `UnOp` type variants don't have a prefix so this is more
  consistent with MIR types.

- "un" prefix reads like "inverse" or "reverse", so as a beginner in
  rustc code base when I see "UnDeref" what comes to my mind is
  something like "&*" instead of just "*".
2021-02-09 11:39:20 +03:00
Cameron Steffen
39ba449c2a Fix collapsible_if false positive with attributes 2021-02-08 11:00:30 -06:00
daxpedda
6c73f989e2
Fix missing_panics_doc warning on unreachable!. 2021-02-08 17:25:10 +01:00
Cameron Steffen
1d30422945 Enhance LocalUsedVisitor to check closure bodies 2021-02-08 08:56:33 -06:00
Cameron Steffen
a42be8589a Fix vec_init_then_push FP 2021-02-08 08:54:04 -06:00
Takayuki Maeda
1c3033d5cf add a new lint bytes_nth 2021-02-08 01:34:59 +09:00
bors
ad9ceeebdc Auto merge of #6685 - magurotuna:filter_map_identity, r=phansch
Add new lint `filter_map_identity`

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This commit adds a new lint named filter_map_identity.
This lint is the same as `flat_map_identity` except that it checks for the usage of `filter_map`.

---

Closes #6643

changelog: Added a new lint: `filter_map_identity`
2021-02-07 09:55:32 +00:00
Yoshitomo Nakanishi
22d4483dee Simplify DefaultNumericFallback 2021-02-07 18:11:31 +09:00
bors
001185d863 Auto merge of #6681 - 1c3t3a:1c3t3a-issue-6467, r=xFrednet,flip1995,phansch
Adds a new lint that checks if there is a semicolon on the last block statement if it returns nothing

changelog: Added a new lint: `SEMICOLON_IF_NOTHING_RETURNED`
fixes #6467
Adds the `SEMICOLON_IF_NOTHING_RETURNED` lint and therefore closes #6467.
2021-02-07 08:53:52 +00:00
bors
d792210c26 Auto merge of #6682 - camsteffen:let-underscore-ref, r=llogiq
Fix let_underscore_drop FP

changelog: Fix let_underscore_drop false positives and negatives

Fixes #6633
2021-02-07 08:13:42 +00:00
Bastian Kersting
6b4789d7cf Fixed suggestion in macro invocations 2021-02-06 20:05:51 +01:00
Bastian Kersting
85c2b1e5f4 Switched to snippet_with_macro_callsite 2021-02-06 16:56:18 +01:00
Bastian Kersting
cd6748749a Revert "Fixed for loop problem, corrected all occurences that got linted"
This reverts commit 6626295fbc.
2021-02-06 16:44:57 +01:00
Bastian Kersting
6626295fbc Fixed for loop problem, corrected all occurences that got linted 2021-02-06 14:25:40 +01:00
Yusuke Tanaka
a60c143fe0
Add new lint filter_map_identity
This commit adds a new lint named `filter_map_identity`. This lint is
the same as `flat_map_identity` except that it checks for `filter_map`.

Closes #6643
2021-02-06 18:03:14 +09:00
Cameron Steffen
ac5e9c8d26 Fix let_underscore_drop implements Drop logic
This fixes false positives and false negatives.
2021-02-05 14:54:06 -06:00
Bastian Kersting
55bfaa12d3 Fixed macro edge case for semicolon_if_nothing_returned lint 2021-02-05 20:48:46 +01:00
Bastian Kersting
eb9c6698ee First version of the lint 2021-02-05 20:19:22 +01:00
Takayuki Maeda
67d48e1c59 fix typo 2021-02-06 00:10:52 +09:00
ThibsG
233fe11ce9 Set turbofish for every sugg and add more test cases 2021-02-04 19:08:08 +01:00
bors
357c6a7e27 Auto merge of #6646 - nahuakang:for_loops_over_options_or_results, r=flip1995
New Lint: Manual Flatten

This is a draft PR for [Issue 6564](https://github.com/rust-lang/rust-clippy/issues/6564).

r? `@camsteffen`

- \[x] Followed [lint naming conventions][lint_naming]
- \[x] Added passing UI tests (including committed `.stderr` file)
- \[x] `cargo test` passes locally
- \[x] Executed `cargo dev update_lints`
- \[x] Added lint documentation
- \[x] Run `cargo dev fmt`

---

*Please write a short comment explaining your change (or "none" for internal only changes)*
changelog: Add new lint [`manual_flatten`] to check for loops over a single `if let` expression with `Result` or `Option`.
2021-02-04 10:03:45 +00:00
nahuakang
2f8a8d3468 Improve lint message; add note for future autofixable updates 2021-02-04 10:51:40 +01:00
Yoshitomo Nakanishi
e32e4dedf1 New lint: default_numeric_fallback 2021-02-04 17:26:43 +09:00
Mara Bos
9f7f8b71a6 Suggest panic!("{}", ..) instead of panic!(..) clippy::expect_fun_call. 2021-02-03 23:15:51 +01:00
Mara Bos
0767a0f9c7 Fix/allow non_fmt_panic in clippy tests. 2021-02-03 23:15:51 +01:00
nahuakang
78ef0f2f6c Add additional test cases and improve span lint 2021-02-03 21:54:38 +01:00
bors
876ffa4674 Auto merge of #6669 - magurotuna:fix-test-name, r=flip1995
Fix file names of flat_map_identity test

This patch fixes the file names of the `flat_map_identity` test.
Previously, their names were started with `unnecessary_flat_map` even though the lint rule name is `flat_map_identity`. This inconsistency happened probably because the rule name was changed during the discussion in the PR where this rule was introduced.

ref: https://github.com/rust-lang/rust-clippy/pull/4231

changelog: none
2021-02-03 15:39:37 +00:00
Yusuke Tanaka
6396b8fb7f
Fix file names of flat_map_identity test
This commit fixes the file names of the `flat_map_identity` test.
Previously, their names were started with `unnecessary_flat_map` even
though the lint rule name is `flat_map_identity`. This inconsistency
happened probably because the rule name was changed during the
discussion in the PR where this rule was introduced.

ref: https://github.com/rust-lang/rust-clippy/pull/4231
2021-02-04 00:06:26 +09:00
Manish Goregaokar
c8cb90abbd Merge commit '3e4179766bcecd712824da04356621b8df012ea4' into sync-from-clippy 2021-02-02 20:43:30 -08:00
Manish Goregaokar
5c957b8a6f Merge remote-tracking branch 'origin/master' into rustup 2021-02-02 16:46:12 -08:00
Pierre-Andre Gagnon
e0e51e4189 Fixed test 2021-02-02 19:14:13 -05:00
Pierre-Andre Gagnon
bfbc083587 Fix for issue 6640 2021-02-02 18:39:23 -05:00
nahuakang
e07cd5b6fe Enhance manual flatten 2021-02-02 23:43:17 +01:00
Caden Haustein
bde667af7e
Add missing_panics_doc lint 2021-02-02 16:36:32 +01:00
bors
f870876d92 Auto merge of #6659 - phlip9:let_and_return_fix, r=phansch
Fix let_and_return false positive

The issue:

See this Rust playground link: https://play.rust-lang.org/?edition=2018&gist=12cb5d1e7527f8c37743b87fc4a53748

Run the above with clippy to see the following warning:

```
warning: returning the result of a `let` binding from a block
  --> src/main.rs:24:5
   |
23 |     let value = Foo::new(&x).value();
   |     --------------------------------- unnecessary `let` binding
24 |     value
   |     ^^^^^
   |
   = note: `#[warn(clippy::let_and_return)]` on by default
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
help: return the expression directly
   |
23 |
24 |     Foo::new(&x).value()
   |
```

Implementing the suggested fix, removing the temporary let binding,
yields a compiler error:

```
error[E0597]: `x` does not live long enough
  --> src/main.rs:23:14
   |
23 |     Foo::new(&x).value()
   |     ---------^^-
   |     |        |
   |     |        borrowed value does not live long enough
   |     a temporary with access to the borrow is created here ...
24 | }
   | -
   | |
   | `x` dropped here while still borrowed
   | ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `Foo`
   |
   = note: the temporary is part of an expression at the end of a block;
           consider forcing this temporary to be dropped sooner, before the block's local variables are dropped
help: for example, you could save the expression's value in a new local variable `x` and then make `x` be the expression at the end of the block
   |
23 |     let x = Foo::new(&x).value(); x
   |     ^^^^^^^                     ^^^
```

The fix:

Of course, clippy looks like it should already handle this edge case;
however, it appears `utils::fn_def_id` is not returning a `DefId` for
`Foo::new`. Changing the `qpath_res` lookup to use the child Path
`hir_id` instead of the parent Call `hir_id` fixes the issue.

changelog: none
2021-02-02 15:04:35 +00:00
Philipp Krones
4a13c8c22e
Fix test formatting 2021-02-02 08:59:23 +01:00
Manish Goregaokar
0fb09d6b21 exhaustive_structs: don't trigger for structs with private fields 2021-02-01 18:42:08 -08:00
ThibsG
7825bf36d8 Fix suggestions that need parens 2021-02-01 20:03:40 +01:00
nahuakang
b87e189694 Implement manual flatten lint 2021-02-01 16:58:31 +01:00
nahuakang
3da25ed955 Rename lint 2021-02-01 16:49:53 +01:00
nahuakang
949b125891 Add unit tests for new lint 2021-02-01 16:49:53 +01:00
bors
9607b5c6ac Auto merge of #80851 - m-ou-se:panic-2021, r=petrochenkov
Implement Rust 2021 panic

This implements the Rust 2021 versions of `panic!()`. See https://github.com/rust-lang/rust/issues/80162 and https://github.com/rust-lang/rfcs/pull/3007.

It does so by replacing `{std, core}::panic!()` by a bulitin macro that expands to either `$crate::panic::panic_2015!(..)` or `$crate::panic::panic_2021!(..)` depending on the edition of the caller.

This does not yet make std's panic an alias for core's panic on Rust 2021 as the RFC proposes. That will be a separate change: c5273bdfb2 That change is blocked on figuring out what to do with https://github.com/rust-lang/rust/issues/80846 first.
2021-02-01 10:25:31 +00:00
bors
c5f3f9df3b Auto merge of #6603 - ThibsG:MatchOverlappingArm5986, r=flip1995
Do not lint when range is completely included into another one

This fix has been developed following this [comment](https://github.com/rust-lang/rust-clippy/issues/5986#issuecomment-703313548).
So this will be linted:
```
|----------|
        |-----------|
```
Now this won't be linted:
```
              |---|
|--------------------|
```
and this will still lint:
```
|--------|
|--------------|
```

Fixes: #5986

changelog: Fix FPs in match_overlapping_arm, when first arm is completely included in second arm
2021-01-31 15:09:55 +00:00
Mara Bos
3a0ae08ae2 Update clippy test output for panic macros. 2021-01-30 19:33:21 +01:00
flip1995
ac912be984 Merge commit '95c0459217d1661edfa794c8bb122452b92fb485' into clippyup 2021-01-30 18:06:34 +01:00
flip1995
e2859437f9
Merge remote-tracking branch 'upstream/master' into rustup 2021-01-30 15:51:16 +01:00
Philip Hayes
7f1595e18f Fix let_and_return false positive
The issue:

See this Rust playground link: https://play.rust-lang.org/?edition=2018&gist=12cb5d1e7527f8c37743b87fc4a53748

Run the above with clippy to see the following warning:

```
warning: returning the result of a `let` binding from a block
  --> src/main.rs:24:5
   |
23 |     let value = Foo::new(&x).value();
   |     --------------------------------- unnecessary `let` binding
24 |     value
   |     ^^^^^
   |
   = note: `#[warn(clippy::let_and_return)]` on by default
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
help: return the expression directly
   |
23 |
24 |     Foo::new(&x).value()
   |
```

Implementing the suggested fix, removing the temporary let binding,
yields a compiler error:

```
error[E0597]: `x` does not live long enough
  --> src/main.rs:23:14
   |
23 |     Foo::new(&x).value()
   |     ---------^^-
   |     |        |
   |     |        borrowed value does not live long enough
   |     a temporary with access to the borrow is created here ...
24 | }
   | -
   | |
   | `x` dropped here while still borrowed
   | ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `Foo`
   |
   = note: the temporary is part of an expression at the end of a block;
           consider forcing this temporary to be dropped sooner, before the block's local variables are dropped
help: for example, you could save the expression's value in a new local variable `x` and then make `x` be the expression at the end of the block
   |
23 |     let x = Foo::new(&x).value(); x
   |     ^^^^^^^                     ^^^
```

The fix:

Of course, clippy looks like it should already handle this edge case;
however, it appears `utils::fn_def_id` is not returning a `DefId` for
`Foo::new`. Changing the `qpath_res` lookup to use the child Path
`hir_id` instead of the parent Call `hir_id` fixes the issue.
2021-01-29 22:19:09 -08:00
bors
8d57cee9ca Auto merge of #6617 - Manishearth:exhaustive_enums, r=camsteffen
New lint: exhaustive_enums, exhaustive_structs

Fixes #6616

changelog: Added restriction lint: `exhaustive_enums`, `exhaustive_structs`
2021-01-25 23:06:39 +00:00
Manish Goregaokar
3e3dff7135 Add test with attrs 2021-01-25 14:39:03 -08:00
ThibsG
051891173d Add more tests for match_overlapping_arm lint 2021-01-24 12:28:59 +01:00
bors
70386ff352 Auto merge of #6403 - camsteffen:similar-names-underscore, r=Manishearth
Similar names ignore underscore prefixed names

changelog: Ignore underscore-prefixed names for similar_names

IMO, this lint is not very helpful for underscore-prefixed variables. Usually they are unused or are just there to ignore part of a destructuring.
2021-01-22 23:44:12 +00:00
bors
41d750c76c Auto merge of #6619 - camsteffen:collapsible-match, r=camsteffen
Improve collapsible_match

changelog: Fix collapsible_match false negatives

Allow `&` and/or `*` on the binding and make sure the type still matches.
2021-01-22 22:45:43 +00:00
Cameron Steffen
66afdd1f42 Enhance collapsible_match for adjusted bindings 2021-01-22 16:44:47 -06:00
Manish Goregaokar
65d003a112 Clean up suggestion span; clarify help message 2021-01-22 12:08:47 -08:00
Manish Goregaokar
752274eabd Fix indentation of suggestion 2021-01-22 11:59:36 -08:00
Manish Goregaokar
8cb7e85006 Add exhaustive_structs lint 2021-01-22 11:59:36 -08:00
bors
a1b89f07f0 Auto merge of #81135 - jyn514:no-backticks, r=flip1995
Fix formatting for removed lints

- Don't add backticks for the reason a lint was removed. This is almost
never a code block, and when it is the backticks should be in the reason
itself.
- Don't assume clippy is the only tool that needs to be checked for
backwards compatibility

I split this out of https://github.com/rust-lang/rust/pull/80527/ because it kept causing tests to fail, and it's a good change to have anyway.

r? `@flip1995`
2021-01-22 06:13:19 +00:00
Cameron Steffen
a752d31e0a Replace find_map with manual_find_map 2021-01-21 18:18:21 -06:00
Cameron Steffen
c92bdc4dbb Split filter_map into manual_filter_map 2021-01-21 18:18:18 -06:00
Manish Goregaokar
09d4d49299 ExhaustiveEnums -> ExhaustiveItems 2021-01-21 13:39:00 -08:00
Manish Goregaokar
f6cb96ef07 Make exhaustive_enums only warn on exported items 2021-01-21 13:34:44 -08:00
Manish Goregaokar
f1ab3024b2 New lint: exhaustive_enums 2021-01-21 13:31:06 -08:00
bors
043cf97abc Auto merge of #6609 - giraffate:fix_wrong_suggestion_of_ref_in_deref, r=llogiq
Fix a wrong suggestion of `ref_in_deref`

Fix #6358.

changelog: Fix a wrong suggestion of `ref_in_deref`
2021-01-21 19:16:11 +00:00
bors
4d381c3a84 Auto merge of #6605 - kawogi:doc-markdown, r=llogiq
Doc markdown

I added "WebGL" along the lines of the existing "OpenGL" to the whitelist of `doc_markdown` as I found this to be a pretty common term.

(this is a follow-up of the now closed https://github.com/rust-lang/rust-clippy/pull/6388)

changelog: Whitelist "WebGL" in `doc_markdown`.
2021-01-21 19:05:50 +00:00
bors
a982ab4cee Auto merge of #6532 - matthiaskrgr:mlmm, r=llogiq
match_like_matches_macro: strip refs in suggestion

fixes #6503

changelog: match_like_matches_macro: strip refs in suggestion (#6503)
2021-01-21 18:34:55 +00:00
bors
7b50a4ead7 Auto merge of #6408 - pro-grammer1:master, r=oli-obk
Fix false positive in write_literal and print_literal (numeric literals)

changelog: No longer lint numeric literals in [`write_literal`] and [`print_literal`].

Fixes #6335
2021-01-21 14:23:25 +00:00
pastchick3
e42208f1b7 Improve the suggestion message of stable_sort_primitive. 2021-01-21 20:44:52 +08:00
Hirochika Matsumoto
ab1da8f865 Add new lint upper_case_acronyms 2021-01-20 18:03:06 +09:00
Hirochika Matsumoto
6c830ff9e4 Run cargo dev new_lint 2021-01-20 18:02:29 +09:00
Marijn Suijten
d4bf59b6ef size_of_in_element_count: Disable lint on division by byte-size
It is fairly common to divide some length in bytes by the byte-size of a
single element before creating a `from_raw_parts` slice or similar
operation. This lint would erroneously disallow such expressions.

Just in case, instead of simply disabling this lint in the RHS of a
division, keep track of the inversion and enable it again on recursive
division.
2021-01-19 20:05:40 +01:00
Marijn Suijten
391bb218b5 size_of_in_element_count: Separate test file in expressions and functions
An upcoming test case for new expresssion variants make the stderr file
go over 200 lines. Split this test case in two to have a clear
distinction between checking whether the lint is still applying on
all the functions with member counts as argument, versus validating
various member-count expressions that may or may not be invalid.
2021-01-19 20:05:39 +01:00
Takayuki Nakata
966320642b Fix a wrong suggestion of ref_in_deref 2021-01-20 00:21:33 +09:00
bors
d71dea40cf Auto merge of #6577 - nahuakang:inspect_then_for_each, r=flip1995
New Lint: inspect_then_for_each

**Work In Progress**

This PR addresses [Issue 5209](https://github.com/rust-lang/rust-clippy/issues/5209) and adds a new lint called `inspect_then_for_each`.

Current seek some guidance.

If you added a new lint, here's a checklist for things that will be
checked during review or continuous integration.

- \[x] Followed [lint naming conventions][lint_naming]
- \[x] Added passing UI tests (including committed `.stderr` file)
- \[x] `cargo test` passes locally
- \[x] Executed `cargo dev update_lints`
- \[x] Added lint documentation
- \[x] Run `cargo dev fmt`

[lint_naming]: https://rust-lang.github.io/rfcs/0344-conventions-galore.html#lints

---

changelog: Add [`inspect_for_each`] lint for the use of `inspect().for_each()` on `Iterators`.
2021-01-19 13:12:39 +00:00
nahuakang
3269070261 Create new lint for the usage of inspect for each. 2021-01-19 11:30:20 +01:00
ThibsG
e33ab3fdd8 Add test for needless_return lint 2021-01-18 22:33:25 +01:00
Marc Dominik Migge
eb476c6c70 Split up tests for unit arg expressions 2021-01-18 20:18:56 +01:00
Ashley Mannix
9009f8f031 Rollup merge of #81038 - flip1995:clippyup, r=Manishearth
Update Clippy

Biweekly Clippy update

r? ``@Manishearth``
2021-01-18 21:53:22 +10:00
kai.giebeler
c3244c25ac add test for doc_valid_idents "WebGL" 2021-01-17 22:57:08 +01:00
Joshua Nelson
abb40c965f Fix formatting for removed lints
- Don't add backticks for the reason a lint was removed. This is almost
never a code block, and when it is the backticks should be in the reason
itself.
- Don't assume clippy is the only tool that needs to be checked for
backwards compatibility
2021-01-17 16:18:02 -05:00
ThibsG
70704db36f Do not lint when range is completely included into another one 2021-01-17 21:07:01 +01:00
pro-grammer1
32b2a3f944 Add numeric literals to the write_literal and print_literal tests that shouldn't fail 2021-01-17 19:21:33 +00:00
pro-grammer1
fb2a06dcce Remove numeric literals from print_literal and write_literal tests 2021-01-17 18:55:59 +00:00
bors
990e2b35b2 Auto merge of #6528 - Jarcho:redundant_slicing, r=flip1995
New lint: redundant_slicing

changelog: Added lint: `redundant_slicing`
fixes #6519

This will trigger on any type which implements `Index<RangeFull>` that returns the input type. This would be a false positive if the implementation does something other than return itself, but I'm not sure why you would ever want to do that.
2021-01-17 16:26:28 +00:00
bors
e0d331fbf4 Auto merge of #6582 - rail-rain:ice_6539, r=flip1995
Fix the ICE 6539

Fixes #6539

It happened because `zero_sized_map_values` used `layout_of` with types from type aliases, which is essentially the same as the ICE 4968.

---

changelog: Fix an ICE in `zero_sized_map_values`
2021-01-17 15:38:50 +00:00
Marc Dominik Migge
0c347d3d06 Fix false positive for unit_arg lint 2021-01-17 14:42:36 +01:00
bors
40ce9f83b6 Auto merge of #6549 - ThibsG:FixClosureNeedlessReturn, r=phansch
Fix FP with empty return for `needless_return` lint

This fixes a false positive in `needless_return` lint, when triggered in a closure using `return` statement without value.

Fixes: #6501

changelog: none
2021-01-17 10:29:10 +00:00
flip1995
7449dc96c0 Deprecate unknown_clippy_lints
This is now handled by unknown_lints
2021-01-16 19:44:46 +01:00
Jason Newcomb
837bc99065
Initial implementation of redundant_slicing lint 2021-01-15 16:41:13 -05:00
bors
3577cf79de Auto merge of #6500 - Javier-varez:case_sensitive_file_extensions, r=llogiq
Case sensitive file extensions

Closes #6425

Looks for ends_with methods calls with case sensitive extension comparisons.

changelog: Add new lint that warns about case-sensitive file extension comparisons.
2021-01-15 19:49:39 +00:00
ThibsG
46aa654c2d Fix test due to recent Rustup merge 2021-01-15 18:58:48 +01:00
ThibsG
83f1abff48 Fix FP with empty return for needless_return lint 2021-01-15 18:57:56 +01:00
bors
2d1e129851 Auto merge of #6574 - Jarcho:single_match_eq, r=Manishearth
single_match: suggest `if` over `if let` when possible

fixes: #173
changelog: single_match: suggest `if` over `if let` when possible
2021-01-15 16:25:03 +00:00
flip1995
488153ff2f Merge commit '953f024793dab92745fee9cd2c4dee6a60451771' into clippyup 2021-01-15 10:56:44 +01:00
flip1995
f18cf82ca8
Don't trigger needless_return lint in macros 2021-01-15 10:41:29 +01:00
flip1995
9bd037d0b5
Merge remote-tracking branch 'upstream/master' into rustup 2021-01-15 10:39:53 +01:00
Jason Newcomb
85edd65bf6
Address review comments
Add: attempt to remove address of expressions from the scrutinee expression before adding references to the pattern
2021-01-14 14:26:26 -05:00
rail
feee45c872 Fix the ICE 6539
It happened because `zero_sized_map_values` used `layout_of` with types
from type aliases, which is essentially the same as the ICE 4968.
2021-01-13 12:07:33 +13:00
Cameron Steffen
f2d493504c Similar names ignore underscore prefixed names 2021-01-12 14:21:28 -06:00
bors
7f4599a848 Auto merge of #6557 - rail-rain:extending_cast_ptr_alignment, r=phansch
Catch `pointer::cast` too in `cast_ptr_alignment`

Fixes #4708

Although there were some discussion in the issue, this PR implements the original feature. I think `cast_ptr_alignment` should exist as it is, separated from `ptr_as_ptr`.

---

changelog: Extend `cast_ptr_alignment` lint for the `pointer::cast` method
2021-01-11 22:03:46 +00:00
Jason Newcomb
8d7417d807
Add: single_match will suggest using if .. == .. instead of if let when applicable 2021-01-10 23:32:23 -05:00
bors
ee0598e254 Auto merge of #6571 - ThibsG:BoxedLocalTrait, r=phansch
Fix FP for `boxed_local` lint in default trait fn impl

Fix FP on default trait function implementation on `boxed_local` lint.

Maybe I checked too much when looking if `self` is carrying `Self` in its bound type.
I can't find a good test case for this, so it could be too much conservative.
Let me know if you think only detecting `self` parameter is enough.

Fixes: #4804

changelog: none
2021-01-09 13:42:28 +00:00
ThibsG
8a6fea4fb8 Fix FP for boxed_local lint in default trait fn impl 2021-01-09 12:26:24 +01:00
rail
ee9b47dae6 Move is_hir_ty_cfg_dependant to util,
add stuff on pointer::cast` to the document for `cast_ptr_alignment`
and fix line numbers in the test.
2021-01-08 14:15:12 +13:00
Takayuki Nakata
0e14a75506 Reduce the span in from_over_into to impl header 2021-01-08 09:16:11 +09:00
Caio
7d42172899 Reintroduce hir::ExprKind::If 2021-01-07 18:54:12 -03:00
rail
f50ded0592 Catch pointer::cast too in cast_ptr_alignment 2021-01-07 16:56:19 +13:00
Philipp Hansch
92f2bbbe06
Fix macro issues with field_reassign_with_default 2021-01-05 20:31:13 +01:00
Javier Alvarez
61f3d9d46b Add case_sensitive_file_extensions lint
Closes #6425

Looks for ends_with methods calls with case sensitive extensions.
2021-01-05 14:22:26 +01:00
bors
a6b72d378f Auto merge of #6542 - rail-rain:ptr_as_ptr, r=flip1995
Add a new lint `ptr_as_ptr`

This PR adds a new lint `ptr_as_ptr` which checks for `as` casts between raw pointers without changing its mutability and suggest replacing it with `pointer::cast`. Closes #5890.

Open question: should this lint be `pedantic` or `style`? I set it `pedantic` for now because the original post suggests using it, but I think the lint also fits well to `style`.

---

changelog: New lint `ptr_as_ptr`
2021-01-05 09:54:34 +00:00
bors
311186b9bb Auto merge of #6513 - nahuakang:fix/empty_enum_lint_never_type, r=flip1995
Fix: Empty enum never type suggested only if the feature is enabled

This PR addresses [Issue 6422](https://github.com/rust-lang/rust-clippy/issues/6422). Instead of always recommending `never type` for empty enums, Clippy would only recommend [the lint](https://rust-lang.github.io/rust-clippy/master/index.html#empty_enum) if [LatePass.TyCtxt](https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/context/struct.TyCtxt.html) has `features().never_type` enabled.

- \[ ] Followed [lint naming conventions][lint_naming]
- \[x] Added passing UI tests (including committed `.stderr` file)
- \[x] `cargo test` passes locally
- \[x] Executed `cargo dev update_lints`
- \[x] Added lint documentation
- \[x] Run `cargo dev fmt`
---

*Please write a short comment explaining your change (or "none" for internal only changes)*
changelog: Only trigger [`empty_enum`] lint if `never_type` feature is enabled.
2021-01-05 09:37:19 +00:00
rail
dfa5d7e818 Fix the MSRV and add the tests for MSRV 2021-01-05 10:21:55 +13:00
rail
4b478a5731 Add a new lint ptr_as_ptr,
which checks for `as` casts between raw pointers
without changing its mutability
and suggest replacing it with `pointer::cast`.
2021-01-05 10:19:03 +13:00
bors
976850b69b Auto merge of #6538 - Jarcho:vec_init_then_push, r=llogiq
New lint: vec_init_then_push

fixes: #1483

This will trigger on `new`, `default`, and `with_capacity` when the given capacity is less than or equal to the number of push calls. Is there anything else this should trigger on?

changelog: Added lint: `vec_init_then_push`
2021-01-04 20:42:18 +00:00
nahuakang
a8d47b4b78 Run cargo dev fmt 2021-01-04 18:41:42 +01:00
nahuakang
bc97f5d215 Address flip1995's review comments 2021-01-04 18:34:05 +01:00
bors
ae9ae9713c Auto merge of #6507 - bengsparks:lint/issue6410, r=flip1995
Needless Question Mark Lint

Fixes #6410, i.e the needless question mark lint

changelog: [`needless_question_mark`] New lint
2021-01-04 14:17:24 +00:00
Benjamin Sparks
ba87acb440
Implemented needless question mark lint 2021-01-04 14:51:48 +01:00
Matthias Krüger
6dcec6ae86 collapsible_if: split collapsible_else_if into its own lint so we can enable/disable it particularly
This splits up clippy::collapsible_if into collapsible_if for
if x {
  if y { }
}
=>
if x && y { }

and collapsible_else_if for

if x {
} else {
 if y { }
}

=>
if x {

} else if y {

}

so that we can lint for only the latter but not the first if we desire.

changelog: collapsible_if: split up linting for if x {} else { if y {} } into collapsible_else_if lint
2021-01-04 13:34:14 +01:00
Matthias Krüger
39f39d5405 match_like_matches_macro: strip refs in suggestion
fixes #6503

changelog: match_like_matches_macro: strip refs in suggestion (#6503)
2021-01-03 20:28:46 +01:00
bors
a02806e00d Auto merge of #6518 - ThibsG:CopyException, r=ebroto
Ensure `Copy` exception in trait definition for `wrong_self_conventio…

Add a test case to ensure `Copy` exception is preserved also in trait definition, when passing `self` by value.

Follow up of #6316

changelog: none
2021-01-02 23:51:49 +00:00
bors
592f7eb7eb Auto merge of #6531 - matthiaskrgr:6522, r=ebroto
field_reassign_with_default: don't expand macros in suggestion

fixes #6522

changelog: field_reassign_with_default: don't expand macros in lint suggestion (#6522)
2021-01-02 23:38:23 +00:00
Jason Newcomb
9427e0356b
Fix clone_on_copy test 2021-01-02 14:15:11 -05:00
Jason Newcomb
1853f8b228
Add lint 2021-01-02 11:08:56 -05:00
flip1995
ba4bf4f9c5 Merge commit '1fcc74cc9e03bc91eaa80ecf92976b0b14b3aeb6' into clippyup 2021-01-02 16:29:43 +01:00
flip1995
d93692efa2
Merge remote-tracking branch 'upstream/master' into rustup 2021-01-02 16:03:26 +01:00
Matthias Krüger
5d48b91b40 field_reassign_with_default: don't expand macros in suggestion
fixes #6522

changelog: field_reassign_with_default: don't expand macros in lint suggestion (#6522)
2021-01-01 17:01:09 +01:00
ThibsG
af480a67be Ensure Copy exception in trait definition for wrong_self_convention lint 2020-12-30 12:02:26 +01:00
Aaron Hill
6fd18f95ca Remove unnecessary semicolon from Clippy test 2020-12-29 17:16:04 -05:00
nahuakang
83a458acf1 Enable never type in empty enum ui test; run cargo dev bless 2020-12-28 20:18:27 +01:00
Aleksei Latyshev
203715aa4e
don't ignore expression after first not matched method call in PtrCloneVisitor 2020-12-28 01:09:04 +03:00
bors
61a3ee7935 Auto merge of #6506 - alex-700:add-path-buf-to-ptr-arg-lint, r=Manishearth
Lint "&PathBuf instead of &Path" in PTR_ARG

fixes #6502

changelog: lint "`&PathBuf` instead of `&Path`" in `PTR_ARG`
2020-12-27 17:59:52 +00:00
bors
3661848997 Auto merge of #6375 - camsteffen:reassign-default-private, r=flip1995
Reassign default private

changelog: fix field_reassign_with_default false positive

* Fix #6344
* Fix assumption that `field: Default::default()` is the same as `..Default::default()`
* Cleanup some redundant logic
2020-12-27 16:20:47 +00:00
Aleksei Latyshev
dfaea9c967
lint &PathBuf instead of &Path in PTR_ARG
- extract get_only_generic_arg_snippet to improve readability
2020-12-25 15:06:34 +03:00
Takayuki Nakata
e1743ef525 Fix a style of texts in map_err_ignore 2020-12-25 08:59:34 +09:00
Cameron Steffen
c6450c70dd Fix field_reassign_with_default for private fields 2020-12-22 11:09:46 -06:00
Cameron Steffen
8bdf34e10c Fix default initialized fields in suggestion
The default value for a field type does not necessarily match the
default value for that field in the struct Default.
2020-12-22 10:51:56 -06:00
bors
25e9acb253 Auto merge of #6476 - 1c3t3a:1c3t3a-from-over-into, r=llogiq
Added from_over_into lint

Closes #6456
Added a lint that searches for implementations of `Into<..>` and suggests to implement `From<..>` instead, as it comes with a default implementation of `Into`. Category: style.

changelog: added `from_over_into` lint
2020-12-22 12:06:08 +00:00
Bastian Kersting
53f4d437f4
Update from_over_into.stderr 2020-12-21 17:15:05 +01:00
Philipp Hansch
12bd244caa
Don't trigger large_enum_variant in external macros 2020-12-21 11:09:49 +01:00
Bastian Kersting
7e641c8be7 Fixed error messages 2020-12-20 22:00:34 +01:00
flip1995
f03edfd7a1 Merge commit '4911ab124c481430672a3833b37075e6435ec34d' into clippyup 2020-12-20 17:19:49 +01:00
flip1995
883a3d10c8
Merge remote-tracking branch 'upstream/master' into rustup 2020-12-20 16:48:04 +01:00
Bastian Kersting
dd005c17e7 Added MSRV and fixed typo 2020-12-20 13:00:17 +01:00
bors
9f9e9f7e52 Auto merge of #6316 - ThibsG:WrongSelfConventionTraitDef, r=ebroto
Lint also in trait def for `wrong_self_convention`

Extends `wrong_self_convention` to lint also in trait definition.

By the way, I think the `wrong_pub_self_convention` [example](dd826b4626/clippy_lints/src/methods/mod.rs (L197)) is misleading.
On [playground](https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=32615ab3f6009e7e42cc3754be0ca17f), it fires `wrong_self_convention`, so the example (or the lint maybe?) needs to be reworked.
The difference with `wrong_self_convention` [example](dd826b4626/clippy_lints/src/methods/mod.rs (L172)) is mainly the `pub` keyword on the method `as_str`, but the lint doesn't use the function visibility as condition to choose which lint to fire (in fact it uses the visibility of the impl item).

fixes: #6307

changelog: Lint `wrong_self_convention` lint in trait def also
2020-12-19 21:39:19 +00:00
Bastian Kersting
a451b2af30 Added from_over_into lint 2020-12-19 17:00:40 +01:00
Philipp Hansch
8ddf4ce87a
UI Tests: Separate suspicious_else_formatting tests 2020-12-19 13:54:38 +01:00
bors
0718eeb648 Auto merge of #6464 - ahouts:make-needless_update-ignore-non_exhaustive-structs, r=phansch
make needless_update ignore non_exhaustive structs

changelog: make `needless_update` lint ignore `non_exhaustive` structs

fixes #6323
2020-12-19 07:35:04 +00:00
Andrew Houts
1eb7608a2e make needless_update ignore non_exhaustive structs 2020-12-17 21:28:16 -06:00
Eduardo Broto
41b5ebebfd needless_doctest_main: add edition support 2020-12-16 00:14:47 +01:00
Eduardo Broto
39bcf8e554 Handle fatal errors when parsing doctests 2020-12-15 23:18:03 +01:00
bors
39aca5ff9f Auto merge of #78399 - vn-ki:gsgdt-graphviz, r=oli-obk
make MIR graphviz generation use gsgdt

gsgdt [https://crates.io/crates/gsgdt] is a crate which provides an
interface for stringly typed graphs. It also provides generation of
graphviz dot format from said graph.

This is the first in a series of PRs on moving graphviz code out of rustc into normal crates and then implementating graph diffing on top of these crates.

r? `@oli-obk`
2020-12-15 22:00:02 +00:00
bors
d9241640e8 Auto merge of #6435 - xFrednet:5552-false-positive-match-single-binding, r=ebroto
Fixing a false positive for the `match_single_binding` lint #5552

This is a fix for a false positive in the `match_single_binding` lint when using `#[cfg()]` on a branch. It is sadly a bit hacky but maybe the best solution as rust removes the other branch from the AST before we can even validate it. This fix looks at the code snippet itself and returns if it includes another thick arrow `=>` besides the one matching arm we found. This can again cause false negatives if someone has the following code:
```rust
match x {
    // => <-- Causes a false negative
    _ => 1,
}
```

I thought about making the code more complex and maybe validating against other things like the `#[cfg()]` macro but I believe that this is the best solution. This has basically switched the issue from a false positive to a false negative in a very specific case.

I'm happy to make some changes if you have any suggestions 🙃.

---
Fixes #5552

changelog: Fixed a false positive in the `match_single_binding` lint with `#[cfg()]` macro
2020-12-13 21:28:38 +00:00
xFrednet
a37af06fea Removing false positive for the match_single_binding lint
* Applying suggested changes from the PR
2020-12-13 20:49:39 +00:00
bors
6b2b3576eb Auto merge of #6449 - matthiaskrgr:needless_borrow_ty, r=ebroto
needless_borrow: print the type in the lint message

changelog: needless_borrow: print type in lint message
2020-12-13 16:59:02 +00:00
bors
1df2e38219 Auto merge of #6443 - matthiaskrgr:clone_on_copy_type, r=ebroto
clone_on_copy: show the type in the lint message

changelog: clone_on_copy: show the type in the lint message
2020-12-13 16:47:33 +00:00
Matthias Krüger
cd2a62cb0c needless_borrow: print the type in the lint message
changelog: needless_borrow: print type in lint message
2020-12-13 15:29:18 +01:00
bors
b7db5bfc50 Auto merge of #6442 - matthiaskrgr:clone-double-ref-ty, r=llogiq
clone_double_ref: print reference type in lint message

changelog: clone_double_ref: print the type of the reference in lint message
2020-12-13 10:09:00 +00:00
bors
89c282fb63 Auto merge of #6318 - camsteffen:article-description, r=Manishearth
Use article_and_description for missing docs

Moves closer to the current rustc missing_doc lint

changelog: none
2020-12-12 21:20:40 +00:00
bors
3b89a672e2 Auto merge of #6382 - giraffate:fix_fp_in_manual_range_contains_when_const_fn, r=llogiq
Fix FP of `manual_range_contains` in `const fn`

Fix #6373.

changelog: Fix FP of `manual_range_contains` in `const fn`
2020-12-12 21:09:20 +00:00
Philipp Hansch
4bd9ed9b88
Rewrite update-all-references bash scripts in Rust
This replaces the `update-all-references` scripts with a single

    cargo dev bless

command.

cc #5394
2020-12-12 15:09:57 +01:00
Matthias Krüger
b2cb6ffbe3 clone_on_copy: show the type in the lint message
changelog: clone_on_copy: show the type in the lint message
2020-12-12 01:23:28 +01:00
Matthias Krüger
0b145d688b clone_double_ref: print reference type in lint message
changelog: clone_double_ref: print the type of the reference in lint message
2020-12-12 01:09:30 +01:00
Takayuki Nakata
26c61c7e49 Fix FP of manual_range_contains in const fn 2020-12-11 23:07:52 +09:00
bors
27fd6ed581 Auto merge of #6424 - Suyash458:master, r=flip1995
Add MSRV to more lints specified in #6097

add MSRV to more lints specified in #6097
add instructions for adding msrv in other lints
update tests

 - [x] `redundant_field_names` requires Rust 1.17 due to suggest feature stablized in that version.
 - [x] `redundant_static_lifetimes` requires Rust 1.17 due to suggest feature stablized in that version.
 - [x] `filter_map_next` requires Rust 1.30 due to suggest `Iterator::find_map`.
 - [x] `checked_conversions` requires Rust 1.34 due to suggest `TryFrom`.
 - [x] `match_like_matches_macro` requires Rust 1.42 due to suggest `matches!`. Addressed in #6201
 - [x] `manual_strip` requires Rust 1.45 due to suggest `str::{strip_prefix, strip_suffix}`. Addressed in #6201
 - [x] `option_as_ref_deref` requires Rust 1.40 due to suggest `Option::{as_deref, as_deref_mut}`. Addressed in #6201
 - [x] `manual_non_exhaustive` requires Rust 1.40 due to suggest `#[non_exhaustive]`. Addressed in #6201
 - [x] `manual_range_contains` requires Rust 1.35 due to suggest `Range*::contains`.
 - [x] `use_self` requires Rust 1.37 due to suggest `Self::Variant on enum`.
 - [x] `mem_replace_with_default` requires Rust 1.40 due to suggest `mem::take`.
 - [x] `map_unwrap_or` requires Rust 1.41 due to suggest `Result::{map_or, map_or_else}`.
 - [x] `missing_const_for_fn` requires Rust 1.46 due to `match/if/loop in const fn` needs that version.

changelog: Add MSRV config to more lints. ^This is now the complete list, AFAWK
2020-12-11 08:38:19 +00:00
Suyash458
9f27b74283 add test for missing_const_for_fn. fix test stderr 2020-12-11 11:00:29 +05:30
suyash458
a7cfffef26 add MSRV to more lints specified in #6097
update tests
2020-12-11 11:00:03 +05:30
ThibsG
90a16e4397 Add tests for unsized trait in wrong_self_convention lint 2020-12-10 17:53:47 +01:00
Thibaud
1e0f85b264 Update tests/ui/use_self.rs
Co-authored-by: Eduardo Broto <ebroto@tutanota.com>
2020-12-10 17:08:42 +01:00
ThibsG
db98651e72 Allow wrong_self_convention in use_self test for trait def 2020-12-10 17:08:42 +01:00
ThibsG
4af9382bec Common function to lint wrong self convention from impl and trait def 2020-12-10 17:08:42 +01:00
ThibsG
a6bb9276f7 Lint wrong self convention in trait also 2020-12-10 17:08:42 +01:00
Korrat
f77f1db35b Add a lint for maps with zero-sized values
Co-authored-by: Eduardo Broto <ebroto@tutanota.com>
2020-12-09 18:00:09 +01:00
bors
b02b0c737a Auto merge of #6367 - justjosias:6348-print-stderr, r=ebroto
Add lint print_stderr

Resolves #6348
Almost identical to print_stdout, this lint applies to the `eprintln!` and `eprint!` macros rather than `println!` and `print!`.

changelog: Add new lint [`print_stderr`]. [`println_empty_string`] and [`print_with_newline`] now apply to `eprint!()` and `eprintln!()` respectively.
2020-12-08 22:22:49 +00:00
Eduardo Broto
3187cad8ec Factor out some code in write.rs
Get rid of the too-many-lines error.
2020-12-08 23:17:12 +01:00
bors
50bca8af1d Auto merge of #6330 - camsteffen:redundant-else, r=ebroto
Add Redundant else lint

changelog: Add redundant_else lint

It seemed appropriate for "pedantic".

Closes #112 \*blows off dust*
2020-12-08 00:51:51 +00:00
Eduardo Broto
16d0e56924 Update reference file 2020-12-08 00:14:05 +01:00
Dobe Peter
e58c7dd168 panic_in_result_fn: Extend to also check usages of [debug_]assert* macros
Also, the macro-finding logic has been moved to the util module, for
use by future lints.
2020-12-08 00:10:39 +01:00
Josias
7063c36c91 Add eprint! to print_with_newline lint 2020-12-07 23:38:56 +01:00
Josias
b04bfbd09b Fix print_stderr.stderr test 2020-12-07 23:38:56 +01:00
Josias
51cee15be0 Add negative tests 2020-12-07 23:38:56 +01:00
Josias
b81141cfb9 Add lint print_stderr
Resolves #6348
Almost identical to print_stdout, this lint applies to the
`eprintln!` and `eprint!` macros rather than `println!` and
`print!`.
2020-12-07 23:38:56 +01:00
Takayuki Nakata
e90b977a08 Fix FP in unnecessary_lazy_evaluations 2020-12-07 16:42:43 +09:00
flip1995
8eca423ea1 Merge commit 'c1664c50b27a51f7a78c93ba65558e7c33eabee6' into clippyup 2020-12-06 15:01:03 +01:00
bors
c1664c50b2 Auto merge of #6421 - xFrednet:4176-unreadable-literal-lint-fractal-option, r=Manishearth
Added a lint-fraction-readability flag to the configuration

This adds an option to disable the `unreadable_literal` lint for floats with a longer fraction. This allows users to write `0.100200300` without getting a warning. Fixes #4176

I have some open questions about this PR:
1. I've named the option `lint-fraction-readability` is this a good name or should I rename it to something else?
2. What should the default configuration value be?
    * The current default value is `true` as this was also the previous default.
3. Do I have to document this new option somewhere else or will it be extracted from the code comment?
4. The current fix option will also rewrite the fraction if the integer part violates the `unreadable_literal` lint it would otherwise also trigger the `inconsistent_digit_grouping` lint. Is this also okay?
    * `1.100200300` will be unaffected by the fix function
    * `100200300.100200300` will be effected and fixed to `100_200_300.100_200_300`

---

The project needed some getting used to but I'm happy with the result. A big thank you to `@flip1995` for giving me some pointers for this implementation and to everyone for the great introduction documentation!

---

changelog: Added the `unreadable-literal-lint-fractions` configuration to disable the `unreadable_literal` lint for fractions
2020-12-06 07:18:33 +00:00
Vishnunarayan K I
4e14c05976 fix clippy test 2020-12-05 20:21:21 +05:30
xFrednet
6edd598856 Added a lint-fraction-readability flag to the configuration 2020-12-04 21:26:47 +00:00
Takayuki Nakata
75140e813f Fix a style of texts in size_of_in_element_count 2020-12-04 23:36:07 +09:00
bors
13c1a01936 Auto merge of #6416 - deg4uss3r:map_err_restricted, r=ebroto
Moved map_err_ignore to restriction and updated help message

This MR moves map_err_ignore lint from `pedantic` to the `restriction` category of lints and updates the help message to give the user an option to ignore the lint by naming the closure variable e.g. `.map_err(|_ignored| ...`

---

changelog: move map_err_ignore to restriction category
2020-12-04 01:04:48 +00:00
Ricky
5f821fbcf1 Added test to make sure ignoring the error with a named wildcard value works 2020-12-03 19:41:44 -05:00
unknown
c1a5329475 Add more functions to size_of_in_element_count
Specifically ptr::{sub, wrapping_sub, add, wrapping_add, offset, wrapping_offset} and slice::{from_raw_parts, from_raw_parts_mut}
The lint now also looks for size_of calls through casts (Since offset takes an isize)
2020-12-03 21:14:26 -03:00
unknown
af9685bb1e Rename unsafe_sizeof_count_copies to size_of_in_element_count
Also fix review comments:
 - Use const arrays and iterate them for the method/function names
 - merge 2 if_chain's into one using a rest pattern
 - remove unnecessary unsafe block in test

And make the lint only point to the count expression instead of the entire function call
2020-12-03 20:55:38 -03:00
unknown
63a3c44060 Remove unnecessary unsafe_size_count_copies tests 2020-12-03 20:54:28 -03:00
unknown
1b80990fe0 Make the unsafe_sizeof_count_copies lint work with more functions
Specifically:
 - find std::ptr::write_bytes
 - find std::ptr::swap_nonoverlapping
 - find std::ptr::slice_from_raw_parts
 - find std::ptr::slice_from_raw_parts_mut
 - pointer_primitive::write_bytes
2020-12-03 20:54:28 -03:00
unknown
0f954babef Make the unsafe_sizeof_count_copies lint find copy_{from,to} method calls 2020-12-03 20:54:28 -03:00
unknown
b611306642 Add lint unsafe_sizeof_count_copies 2020-12-03 20:54:26 -03:00
Ricky
4bc33d3722 Update the stderr message in ui tests 2020-12-03 17:51:42 -05:00
Ricky
8135ab8a22 Moved map_err_ignore to restriction and updated help message 2020-12-03 16:11:52 -05:00
Philipp Krones
e2ecc4ad6e
Rollup merge of #6402 - camsteffen:collapsible-match, r=llogiq
Add Collapsible match lint

changelog: Add collapsible_match lint

Closes #1252
Closes #2521

This lint finds nested `match` or `if let` patterns that can be squashed together. It is designed to be very conservative to only find cases where merging the patterns would most likely reduce cognitive complexity.

Example:

```rust
match result {
    Ok(opt) => match opt {
        Some(x) => x,
        _ => return,
    }
    _ => return,
}
```
to
```rust
match result {
    Ok(Some(x)) => x,
    _ => return,
}
```

These criteria must be met for the lint to fire:

* The inner match has exactly 2 branches.
* Both the outer and inner match have a "wild" branch like `_ => ..`. There is a special case for `None => ..` to also be considered "wild-like".
* The contents of the wild branches are identical.
* The binding which "links" the matches is never used elsewhere.

Thanks to the hir, `if let`'s are easily included with this lint since they are desugared into equivalent `match`'es.

I think this would fit into the style category, but I would also understand changing it to pedantic.
2020-12-03 10:21:33 +01:00
Philipp Krones
b3d6d6e2e7
Rollup merge of #6395 - Suyash458:master, r=flip1995
switch Version/VersionReq usages to RustcVersion

add `rustc-semver` to dependencies
switch `Version/VersionReq` usages to `RustcVersion`
changelog: none
2020-12-03 10:21:32 +01:00
Philipp Krones
c3db082347
Rollup merge of #6308 - matthiaskrgr:internal_lints, r=flip1995
add `internal-lints` feature to enable clippys internal lints (off by default)

This PR moves the internal lint tests into a new subdirectory (I couldn't find a different way to compile-time-conditionally exclude them from compiletest) and only builds and tests internal lints if the `internal-lints` feature is enabled.

Fixes #6306

changelog: put internal lints behind a feature ("internal-lints")
2020-12-03 10:21:31 +01:00
bors
4785da6e37 Auto merge of #6404 - flip1995:rustup, r=flip1995
Rustup

r? `@ghost`

changelog: none
2020-12-03 08:55:04 +00:00
bors
3be53bc45a Auto merge of #79329 - camelid:int-lit-suffix-error, r=davidtwco
Update error to reflect that integer literals can have float suffixes

For example, `1` is parsed as an integer literal, but it can be turned
into a float with the suffix `f32`. Now the error calls them "numeric
literals" and notes that you can add a float suffix since they can be
either integers or floats.
2020-11-30 01:42:14 +00:00
Cameron Steffen
0e20788839 Split tests 2020-11-29 18:21:21 -06:00
Cameron Steffen
f059febe85 Add redundant else lint 2020-11-29 17:55:42 -06:00
Cameron Steffen
28dec3b708 Add collapsible_match lint 2020-11-29 15:34:11 -06:00
Matthias Krüger
2838b04487 add internal-lints feature to enable clippys internal lints (off by default) 2020-11-29 21:07:43 +01:00
Suyash458
61b29281e7 add more tests for msrv 2020-11-29 17:08:56 +05:30
bstrie
d55d791a3a Update tests to remove old numeric constants
Part of #68490.

Care has been taken to leave the old consts where appropriate, for testing backcompat regressions, module shadowing, etc. The intrinsics docs were accidentally referring to some methods on f64 as std::f64, which I changed due to being contrary with how we normally disambiguate the shadow module from the primitive. In one other place I changed std::u8 to std::ops since it was just testing path handling in macros.

For places which have legitimate uses of the old consts, deprecated attributes have been optimistically inserted. Although currently unnecessary, they exist to emphasize to any future deprecation effort the necessity of these specific symbols and prevent them from being accidentally removed.
2020-11-29 00:55:55 -05:00
Suyash458
4e4b8319e8 fix msrv in test 2020-11-28 21:21:04 -08:00
bors
68cf94f6a6 Auto merge of #6377 - CDirkx:redundant-pattern-match-ipaddr, r=ebroto
Enhance `redundant_pattern_matching` to also lint on `std::net::IpAddr`

Follow-up to #6339
r? `@ebroto`

(note: also contains a small cleanup of the other ui tests)

changelog: Enhance [`redundant_pattern_matching`] to also lint on `std::net::IpAddr`
2020-11-28 23:02:47 +00:00
bors
bc723c53a0 Auto merge of #6398 - rajcspsg:issue_6357, r=flip1995
issue_6357 update unreachable macro usage

changelog: none
2020-11-28 22:41:28 +00:00
bors
6cbb0930cd Auto merge of #6397 - matsujika:fix-6384, r=flip1995
Fix a false positive in `unnecessary_wraps`

Fix #6384

changelog: Fix FP in `unnecessary_wraps` that happens when `Call` expr has `Return` expr inside
2020-11-28 22:19:47 +00:00
Rajkumar Natarajan
76f2c10fb6 issue_6357 update unreachable macro usage 2020-11-28 14:55:13 -05:00
Hirochika Matsumoto
f7b2098e1c Fix a false positive in unnecessary_wraps 2020-11-29 01:55:15 +09:00
flip1995
0e5aee1fc1
items_after_statements: don't lint when they a separated by trailing semicolons 2020-11-28 17:18:15 +01:00
bors
7a73a25622 Auto merge of #6086 - Ryan1729:add-suspicious_chained_operators-lint, r=llogiq
Add suspicious_operation_groupings lint

This is my (<del> currently WIP </del>) attempt to close #6039.

changelog: Added `suspicious_operation_groupings` lint.
2020-11-28 08:17:25 +00:00
Camelid
2347eac4cc Update error to reflect that integer literals can have float suffixes
For example, `1` is parsed as an integer literal, but it can be turned
into a float with the suffix `f32`. Now the error calls them "numeric
literals" and notes that you can add a float suffix since they can be
either integers or floats.
2020-11-27 19:08:24 -08:00
Ryan1729
af1cc5c911 add suspicious_operation_groupings lint
run `cargo dev new_lint --category correctness --name suspicious_chained_operators --pass early`

add (currently failing) tests for suspicious_chained_operators
add some tests to answer a question that came up during implementation

write usage code for functions we'll need to find or create

Complete left-right tracking TODO

get it compiling with several `todo!` invocations.

refactor to a set of incomplete functions that don't expect to be able to edit a `Span`

create placeholder for `suggestion_with_swapped_ident` function and correct some comments

add `inside_larger_boolean_expression` test

fill out `get_ident` and `suggestion_with_swapped_ident`

Implementi the `IdentIter`

start on implementing the `IdentIter`
handle the `ExprKind::Path` case in `IdentIter`

on second thought, make the iterator type dynamic so we don't need an explicit type for each one we will need

handle `ExprKind::MacCall` in `IdentIter`

Try handling `box x` expressions

restructure `IdentIter`

set `self.done` when returning `None`

Handle `ExprKind::Array`

reduce duplication with a macro that we expect to use several more times

handle ExprKind::Call

add `new_p` convenience method

handle `MethodCall`

handle `Tup` and `Binary`

handle `Unary`

simplify by not returning an additional `Expr` from the `IdentIter`

add cross product test against false positives

rename suspicious_chained_operators to suspicious_operation_groupings within files

For the record, the exact commands run were:
find . -type f -name "*.md" -exec sed -i 's/suspicious_chained_operators/suspicious_operation_groupings/g' {} +

find . -type f -name "*.rs" -exec sed -i 's/suspicious_chained_operators/suspicious_operation_groupings/g' {} +

find . -type f -name "*.rs" -exec sed -i 's/SUSPICIOUS_CHAINED_OPERATORS/SUSPICIOUS_OPERATION_GROUPINGS/g' {} +

find . -type f -name "*.rs" -exec sed -i 's/SuspiciousChainedOperators/SuspiciousOperationGroupings/g' {} +

Also:
rename file to match module name

rename test file to match lint name

start implementing `IdentDifference` creation

add `IdentIter` utility

use `ident_iter::IdentIter`

fix bug in `suggestion_with_swapped_ident`

add `inside_if_statements` test

implement `Add` `todo`s

register `SuspiciousOperationGroupings` lint pass

fill in `chained_binops`, and fill in a stopgap version of `ident_difference_expr`, but then notice that the lint does not seem to ever be run in the tests

run `cargo dev update_lints` and not that the `suspicious_operation_groupings` lint still does not seem to be run

fix base index incrementing bug

fix paired_identifiers bug, and remove ident from `Single`

change help prefix and note our first successful lint messages!

add odd_number_of_pairs test

get the `non_boolean_operators` test passing, with two copies of the error message

extract `is_useless_with_eq_exprs` so we can know when `eq_op` will already handle something

add `not_caught_by_eq_op` tests since `s1.b * s1.b` was (reasonably) not caught by `eq_op`

cover the case where the change should be made on either side of the expression with `not_caught_by_eq_op` tests

produce the expected suggestion on the `not_caught_by_eq_op_middle_change_left` test

confirm that the previous tests still pass and update references

fix early continue bug and get `not_caught_by_eq_op_middle_change_right` passing

note that `not_caught_by_eq_op_start` already passes

fix bugs based on misunderstanding of what `Iterator::skip` does, and note that `not_caught_by_eq_op_end` now passes

add several parens tests and make some of them pass

handle parens inside `chained_binops_helper` and note that this makes several tests pass

get `inside_larger_boolean_expression_with_unsorted_ops` test passing by extracting out `check_same_op_binops` function

also run `cargo dev fmt`

note that `inside_function_call` already passes

add another `if_statement` test

remove the matching op requirement, making `inside_larger_boolean_expression_with_unsorted_ops` pass

prevent non-change suggestions from being emitted

get the `Nested` tests passing, and remove apparently false note about eq_op

add a test to justify comment in `ident_difference_expr_with_base_location` but find that the failure mode seems different than expected

complete `todo` making `do_not_give_bad_suggestions_for_this_unusual_expr` pass and add some more tests that already pass

add test to `eq_op`

note that `inside_fn_with_similar_expression` already passes

fix `inside_an_if_statement` and note that it already passes

attempt to implement if statement extraction and notice that we don't seem to handle unary ops correctly

add `maximum_unary_minus_right_tree` test and make it pass

add two tests and note one of them passes

filter out unary operations in several places, and find that the issue seems to be that we don't currently recognize the error in `multiple_comparison_types_and_unary_minus` even so.

remove filtering that was causing bad suggestions

remove tests that were deemed too much for now

run `cargo dev fmt`

correct eq_op post-merge

fill out the description and delete debugging code

run `cargo dev update_lints`

update eq_op references

add parens to work around rustfmt issue #3666 and run rustfmt

https://github.com/rust-lang/rustfmt/issues/3666#issuecomment-714612257

update references after formatting

fix dogfood issues

fix multi-cursor edit

fix missed dogfood error

fix more dogfood pedantic issues, including function length

even more nesting

insert hidden definition of Vec3 so docs compile

add spaces to second struct def

reword test description comment

Co-authored-by: llogiq <bogusandre@gmail.com>

add local `use BinOpKind::*;`

Apply suggestions from code review

Co-authored-by: llogiq <bogusandre@gmail.com>

switch `SUSPICIOUS_OPERATION_GROUPINGS` to a style lint

run `cargo dev update_lints`

put both usages of `op_types` in the same closure to satisfy `borrowck`

fix compile error
2020-11-27 17:50:16 -07:00
Markus Legner
82a7068007
Trigger modulo_one lint also on -1. 2020-11-27 08:54:35 +01:00
bors
403816fbc9 Auto merge of #6362 - nico-abram:unnecessary_cast_dot_float_literal, r=ebroto
Fix rust-lang/rust#79255 - Incorrect try suggestion for float cast

changelog: Fix rust-lang/rust#79255 - Incorrect try suggestion for float literal cast ending in dot
2020-11-26 08:41:16 +00:00
unknown
3b53de6b36 Fix rust-lang/rust#79255 - Incorrect try suggestion for unnecessary float literal cast ending in dot 2020-11-25 19:38:55 -03:00
PunitLodha
2345ef5b1f added lints str_to_string and string_to_string 2020-11-25 20:59:29 +05:30