Commit graph

5042 commits

Author SHA1 Message Date
Eduardo Broto
da86067775 Merge remote-tracking branch 'upstream/master' into sync-from-rust 2020-09-02 08:53:29 +02:00
Ricky
337729137b Ran cargo dev update_lints 2020-09-01 17:05:40 -04:00
Ricky
202a80c927 Added tests for map_err, ignored map_err lint on drop_ref tests 2020-09-01 16:59:37 -04:00
Ricky
e49a29933b Working map_err_ignore lint 2020-09-01 16:26:59 -04:00
Takayuki Nakata
aa7ffa5257 Fix FP in same_item_push
Don't emit a lint when the pushed item doesn't have Clone trait
2020-09-01 22:39:09 +09:00
Koxiaet
b30422114e
Allow GraphQL in doc without backticks 2020-09-01 14:05:19 +01:00
Taiki Endo
2e4b4cebbb useless_attribute: Permit wildcard_imports and enum_glob_use 2020-09-01 12:09:32 +09:00
rail
afeb917fca Fix a fp in transmute_ptr_to_ptr
Avoid firing the lint when `transmute` in const contexts
as dereferencing raw pointers in consts is unstable. cc #5959
2020-09-01 11:51:32 +12:00
bors
67e18c2d5c Auto merge of #5993 - taiki-e:default_trait_access, r=phansch
default_trait_access: Fix wrong suggestion

https://github.com/rust-lang/rust-clippy/issues/5975#issuecomment-683751131
> I think the underlying problem is clippy suggests code with complete parameters, not clippy triggers this lint even for complex types. AFAIK, If code compiles with `Default::default`, it doesn't need to specify any parameters, as type inference is working. (So, in this case, `default_trait_access` should suggest `RefCell::default`.)

Fixes #5975 Fixes #5990

changelog: `default_trait_access`: fixed wrong suggestion
2020-09-01 15:05:16 +00:00
Vali Schneider
f9fcbbea03 fixed bug 2020-08-31 13:32:05 -07:00
bors
066f105d67 Auto merge of #5992 - giraffate:fix_wrong_seggestion_in_collapsible_if, r=yaahc
Fix the wrong suggestion when using macro in `collapsible_if`

Fix #5962

changelog: Fix the wrong suggestion when using macro in `collapsible_if`
2020-08-31 19:41:13 +00:00
bors
8334a58c2f Auto merge of #5909 - khuey:async_yields_async, r=yaahc
Add a lint for an async block/closure that yields a type that is itself awaitable.

This catches bugs of the form

tokio::spawn(async move {
    let f = some_async_thing();
    f // Oh no I forgot to await f so that work will never complete.
});

See the two XXXkhuey comments and the unfixed `_l` structure for things that need more thought.

*Please keep the line below*
changelog: none
2020-08-31 19:20:30 +00:00
Taiki Endo
8b0aa6a00b default_trait_access: Fix wrong suggestion 2020-09-01 00:31:53 +09:00
Takayuki Nakata
001f9e45f2 Fix the wrong suggestion when using macro in collapsible_if 2020-09-01 00:05:53 +09:00
Hirochika Matsumoto
451ef78803 Use match_def_path instead of match_qpath 2020-08-31 22:40:47 +09:00
bors
001c1c51d2 Auto merge of #5984 - ebroto:5693_const_assoc_fn, r=flip1995
or_fn_call: ignore nullary associated const fns

The fix in #5889 was missing associated functions.

changelog: Ignore also `const fn` methods in [`or_fun_call`]

Fixes #5693
2020-08-31 10:43:58 +00:00
Aaron Hill
fdc48fb90c Fix clippy 2020-08-30 19:17:17 -04:00
Camelid
17b2ba5ded Syntax-highlight single_char_push_str lint 2020-08-30 11:29:17 -07:00
Dylan MacKenzie
1c5b0fbe53 Update dataflow analyses to use new interface 2020-08-30 11:15:25 -07:00
Vali Schneider
73a3288282 uncommented fn 2020-08-29 16:22:15 -07:00
Vali Schneider
a424a2c167 changed check_impl_item to check_fn and added a few more test cases 2020-08-29 16:17:53 -07:00
Kyle Huey
04912ca115 Formatting changes requested by ThibsG. 2020-08-29 15:33:54 -07:00
Kyle Huey
4972989b61 Add a lint for an async block/closure that yields a type that is itself awaitable.
This catches bugs of the form

tokio::spawn(async move {
    let f = some_async_thing();
    f // Oh no I forgot to await f so that work will never complete.
});
2020-08-29 15:33:54 -07:00
Hirochika Matsumoto
5b7590f841 Downgrade applicability of create_dir 2020-08-29 14:20:01 +09:00
Eduardo Broto
7a66e6502d or_fn_call: ignore nullary associated const fns 2020-08-29 01:20:49 +02:00
flip1995
282c59820b Merge commit '3d0b0e66afdfaa519d8855b338b35b4605775945' into clippyup 2020-08-28 18:43:25 +02:00
bors
3d0b0e66af Auto merge of #5774 - ThibsG:FixNewRetNoSelf, r=ebroto
Fix FP in `new_ret_no_self`: trigger in trait def instead of impl block

Lint in trait def instead of impl block.

Fixes: #5435

changelog: none
2020-08-28 11:54:07 +00:00
Hirochika Matsumoto
eebd248365 Fix errors 2020-08-28 19:56:19 +09:00
Hirochika Matsumoto
34e302e67c Fix clippy error 2020-08-28 19:35:04 +09:00
Hirochika Matsumoto
607905d126 Add STD_FS_CREATE_DIR into paths 2020-08-28 18:53:15 +09:00
Hirochika Matsumoto
5574182b4d Add a new lint to prevent create_dir from being used 2020-08-28 18:45:28 +09:00
Thibaud
73b1ee1a61
Update clippy_lints/src/methods/mod.rs
Co-authored-by: Eduardo Broto <ebroto@tutanota.com>
2020-08-28 09:33:05 +02:00
Thibaud
ffaadae8e4
Update clippy_lints/src/utils/mod.rs
Co-authored-by: Eduardo Broto <ebroto@tutanota.com>
2020-08-28 09:31:29 +02:00
Thibaud
e8be047c5b
Update clippy_lints/src/utils/mod.rs
Co-authored-by: Eduardo Broto <ebroto@tutanota.com>
2020-08-28 09:31:12 +02:00
Vali Schneider
b006522393 added lint for todo and removed option 2020-08-27 16:55:23 -07:00
bors
07c5e9edb5 Auto merge of #5971 - giraffate:fix_fp_in_to_string_in_display, r=ebroto
Fix FP in `to_string_in_display`

Don't emit a lint when `.to_string()` on anything that is not `self`

Fix #5967

changelog: Fix FP in `to_string_in_display` when calling `.to_string()` on anything that is not `self`
2020-08-27 23:26:52 +00:00
Vali Schneider
8462cce960 edited documentation 2020-08-27 16:22:37 -07:00
Vali Schneider
ceab1a9167 removed unnecessary comment 2020-08-27 16:19:24 -07:00
Vali Schneider
459969f88f added restriction lint that prohibits the usage of unimplemented, unreachable or panic in a function of type result or option 2020-08-27 16:18:05 -07:00
Tim Nielens
f3ccbef2af unit-arg - pr comments 2020-08-27 19:36:28 +02:00
ThibsG
504612622f Merge logic of looking for Self type 2020-08-27 18:31:31 +02:00
ThibsG
3cb75c2e5c Remove expansion restriction + fix doc and tests naming 2020-08-27 18:25:38 +02:00
ThibsG
2a3ee5fa85 Fix FP in new_ret_no_self: trigger in trait def instead of impl block 2020-08-27 18:25:38 +02:00
Takayuki Nakata
04bff17668 Fix FP in to_string_in_display
Don't emit a lint when `.to_string()` on anything that is not `self`
2020-08-27 23:37:47 +09:00
Jane Lusby
91024f1fde Add new lint to prevent usage of unwrap in fns that return result 2020-08-26 16:31:49 -07:00
rail
edc05da57d Fix the wrong use of snippet_with_applicability
This includes a workaround of the issue #5822,
the cause of this little mistake.
2020-08-27 10:24:16 +12:00
bors
64c4bb0d2b Auto merge of #5966 - 1c3t3a:1c3t3a-dev-5819-fix, r=Manishearth
Corrects the float_equality_without_abs lint

Fixes an issue in the `float_equality_without_abs` lint. The lint suggestion was configured in a way that it lints the whole error and not just the subtraction part. In the current configuration the lint would suggest to change the expression in a wrong way, e.g.
```rust
let _ = (a - b) < f32::EPSILON; // before
let _ = (a - b).abs(); // after
```
This was dicovered by @flip1995. (See discussion of PR #5952).

Also the suggestion is now formatted via `utils::sugg`.
changelog: none
2020-08-26 18:15:42 +00:00
Bastian
2d853148d7 Changed the location of the suggestion as well as the way the suggestion is assembled 2020-08-26 16:39:30 +02:00
bors
894581b872 Auto merge of #5946 - mikerite:fix-5729, r=flip1995
Fix `let_and_return` bad suggestion

Add a cast to the suggestion when the return expression has adjustments.
These adjustments are lost when the suggestion is applied.

This is similar to the problem in issue #4437.

Closes #5729

changelog: Fix `let_and_return` bad suggestion
2020-08-26 12:01:32 +00:00
bors
9ef44799bf Auto merge of #5949 - rail-rain:fix_fp_borrow_interior_mutable_const, r=oli-obk
Fix fp in `borrow_interior_mutable_const`

fixes #5796

changelog: fix false positive in `borrow_interior_mutable_const` when referencing a field behind a pointer.
2020-08-26 11:06:37 +00:00
Hirochika Matsumoto
9d18c24b56 Fix typo 2020-08-26 16:03:35 +09:00
bors
ad7a03cbaa Auto merge of #5951 - ThibsG:FixMacroCloneOnRefPtr2076, r=ebroto
Fix incorrect suggestion when `clone_on_ref_ptr` is triggered in macros

In the lint `clone_on_ref_ptr`, if the `span` is in a macro, don't expand it for suggestion.

Fixes: #2076

changelog: none

r? @ebroto
2020-08-25 21:48:19 +00:00
Thibaud
370fc45a0a
Update clippy_lints/src/methods/mod.rs
Co-authored-by: Eduardo Broto <ebroto@tutanota.com>
2020-08-25 22:20:35 +02:00
Scott McMurray
3b1e5d6ff7 Re-enable len_zero for ranges now that is_empty is stable on them 2020-08-25 12:17:03 -07:00
bors
f9015592f3 Auto merge of #5952 - 1c3t3a:1c3t3a-dev-5819, r=Manishearth
Added a lint which corrects expressions like (a - b) < f32::EPSILON, according to #5819

Fixes #5819
changelog: none
2020-08-25 16:54:48 +00:00
Bastian
179df0bd15 Added F32::EPSILON and F64::EPSILON to paths.rs 2020-08-25 13:41:39 +02:00
bors
64b53f3877 Auto merge of #5920 - giraffate:fix_fp_for_redundant_closure_call, r=mikerite
Fix FP for `redundant_closure_call`

Fix #5916

changelog: Fix FP for `redundant_closure_call` when called in function body
2020-08-25 03:29:59 +00:00
Matthias Krüger
e9964f2e8a stable_sort_primitive: print the type that is being sorted in the lint message 2020-08-24 20:06:43 +02:00
Bastian
680c68153b Added a lint which corrects expressions like (a - b) < f32::EPSILON 2020-08-24 16:31:51 +02:00
ThibsG
3d820f71fe Fix incorrect suggestion when clone_on_ref_ptr is triggered in macros 2020-08-24 14:05:49 +02:00
Takayuki Nakata
9fe0ac36a5 Avoid period in lint message according to convention 2020-08-24 10:11:53 +09:00
Takayuki Nakata
b2c2266792 Fix FP for redundant_closure_call
Visit the nested things like function body when checking closure call.
2020-08-24 09:43:16 +09:00
rail
91b200c62b Fix fp in borrow_interior_mutable_const
Fix false positive when referencing a field behind a pointer.
2020-08-23 22:49:08 +12:00
Eduardo Broto
8776db9f6d Fix ICE in repeat_once lint 2020-08-23 12:05:34 +02:00
Michael Wright
e8d33d73dc Fix let_and_return bad suggestion
Add a cast to the suggestion when the return expression has adjustments.
These adjustments are lost when the suggestion is applied.

This is similar to the problem in issue #4437.

Closes #5729
2020-08-23 07:50:59 +02:00
bors
dd07860b83 Auto merge of #5941 - ThibsG:InlineInCopyPassByRef, r=yaahc
Don't lint if it has always inline attribute

Don't trigger the lint `trivially_copy_pass_by_ref` if it has `#[inline(always)]` attribute.

Note: I am not particularly familiar with `inline` impacts, so I implemented this the way that if only `#[inline]` attribute is here (without `always`), the lint will still trigger. Also, it will still trigger if it has `#[inline(never)]`.
Just tell me if it sounds too much conservative.

Fixes: #5876

changelog: none
2020-08-22 18:30:39 +00:00
Christian Stefanescu
e615a26ae4 Use more elegant way to check for prelude string 2020-08-22 14:22:02 +02:00
Christian Stefanescu
5b07b9ed61 Widen understanding of prelude import
Prelude imports are exempt from wildcard import warnings. Until now only
imports of the form

```
use ...::prelude::*;
```

were considered. This change makes it so that the segment `prelude` can
show up anywhere, for instance:

```
use ...::prelude::v1::*;
```

Fixes #5917
2020-08-22 14:22:02 +02:00
ThibsG
191b6c798f Don't lint if it has always inline attribute 2020-08-22 12:58:35 +02:00
bors
b57ef14290 Auto merge of #5926 - giraffate:improve_lint_message_in_to_string_in_display, r=yaahc
Improve lint message in `to_string_in_display`

This is a follow-up of https://github.com/rust-lang/rust-clippy/pull/5831.

changelog: none
2020-08-22 04:51:38 +00:00
bors
aa3b04ff74 Auto merge of #5933 - mikerite:fix-5927, r=matthiaskrgr
Fix false negative in `option_as_ref_deref`

Closes #5927

changelog: Fix false negative in `option_as_ref_deref`
2020-08-21 23:43:20 +00:00
Eduardo Broto
146e352db4 run cargo dev fmt 2020-08-22 00:59:42 +02:00
Eduardo Broto
c2799c861d Merge remote-tracking branch 'upstream/master' into sync-from-rust 2020-08-22 00:53:03 +02:00
Michael Wright
11efd75aeb Fix false negative in option_as_ref_deref 2020-08-21 07:23:04 +02:00
Tim Nielens
2ecc2ac864 unit-arg - improve suggestion 2020-08-21 00:42:11 +02:00
bors
4104611913 Auto merge of #5928 - mikerite:fix-5924, r=ebroto
Fix false positive in `PRECEDENCE` lint

Extend the lint to handle chains of methods combined with unary negation.

Closes #5924

changelog: Fix false negative in `PRECEDENCE` lint
2020-08-20 22:09:27 +00:00
Aaron Hill
191b0806d2 Capture tokens for Pat used in macro_rules! argument
This extends PR #73293 to handle patterns (Pat). Unlike expressions,
patterns do not support custom attributes, so we only need to capture
tokens during macro_rules! argument parsing.
2020-08-20 02:45:28 -04:00
Michael Wright
c236c0fb56 Fix false positive in PRECEDENCE lint
Extend the lint to handle chains of methods combined with unary negation.

Closes #5924
2020-08-20 06:34:48 +02:00
Takayuki Nakata
902b28275e Improve lint message in to_string_in_display 2020-08-19 22:31:34 +09:00
Eduardo Broto
6a12bae194 no from/to bits in const: add tests cases for f64 2020-08-18 22:19:30 +02:00
Eduardo Broto
df4d42fc2d transmute: avoid suggesting from/to bits in const 2020-08-18 21:55:56 +02:00
flip1995
c680602005
Merge remote-tracking branch 'upstream/master' into rustup 2020-08-18 19:50:23 +02:00
bors
4b0e6d5b90 Auto merge of #75120 - JulianKnodt:rm_reps, r=oli-obk
rust_ast::ast => rustc_ast

Rework of #71199 which is a rework #70621

Still working on this but just made the PR to track progress

r? @Dylan-DPC
2020-08-17 23:16:08 +00:00
Ujjwal Sharma
ae0eb390b0 rust_ast::ast => rustc_ast 2020-08-17 20:32:32 +00:00
bors
9360ca6dc2 Auto merge of #5908 - giraffate:fix_fp_for_same_item_push, r=flip1995
Fix FP for `same_item_push`

Fixes https://github.com/rust-lang/rust-clippy/issues/5902

changelog: Fix FP for `same_item_push` where the pushed variable is mutated.
2020-08-17 16:49:03 +00:00
David Wood
f13d2bfd9b clippy: support QPath::LangItem
This commit updates clippy with the introduction of `QPath::LangItem` so
that it still compiles.

Signed-off-by: David Wood <david@davidtw.co>
2020-08-17 13:55:05 +01:00
bors
838c201af9 Auto merge of #5915 - matthiaskrgr:deps_, r=Manishearth
deps: bump cargo_metadata and semver

cargo_metadata 0.9.1 -> 0.11.1
semver 0.9.0 -> 0.10.0

changelog: none
2020-08-17 12:23:44 +00:00
Matthias Krüger
262db3b5e6 deps: bump cargo_metadata and semver
cargo_metadata 0.9.1 -> 0.11.1
semver 0.9.0 -> 0.10.0
2020-08-17 12:19:32 +02:00
Takayuki Nakata
99ba290a14 Improve code style 2020-08-17 08:36:02 +09:00
Tomasz Miąsko
4f4abf4e06 Warn about explicit self-assignment
Warn about assignments where left-hand side place expression is the same
as right-hand side value expression. For example, warn about assignment in:

```rust
pub struct Event {
    id: usize,
    x: i32,
    y: i32,
}

pub fn copy_position(a: &mut Event, b: &Event) {
    a.x = b.x;
    a.y = a.y;
}
```
2020-08-16 23:31:36 +02:00
Tomasz Miąsko
d1dbf7913a Expresions with Assign / AssignOp have side effects 2020-08-16 23:31:27 +02:00
Tomasz Miąsko
9b800b1e92 Rename SpanlessEq::ignore_fn to deny_side_effects
No functional changes intended.
2020-08-16 23:30:33 +02:00
Tomasz Miąsko
6afa4ef60f Introduce function for comparing expression values
Introduce `eq_expr_value(cx, a, b)` as a shortcut for
`SpanlessEq::new(cx).ignore_fn().eq_expr(cx, a, b)`.

No functional changes intended.
2020-08-16 23:30:33 +02:00
bors
8d0d89adc8 Auto merge of #5720 - bugadani:new-lint, r=flip1995,yaahc
Add unnecessary lazy evaluation lint

changelog: Add [`unnecessary_lazy_evaluations`] lint that checks for usages of `unwrap_or_else` and similar functions that can be simplified.

Closes #5715
2020-08-16 20:27:43 +00:00
Dániel Buga
fc1e07e0c1 Rename lint to use plural form 2020-08-16 22:16:39 +02:00
Dániel Buga
b7ee8685ac Fix dogfooding test errors 2020-08-16 21:04:02 +02:00
Dániel Buga
3b52d7f780 run cargo dev fmt 2020-08-16 20:51:16 +02:00
Dániel Buga
8a14c11536 Cleanup, explain return value 2020-08-16 20:50:30 +02:00
Dániel Buga
d71b418ac5 Moved to submodule, don't trigger if map_unwrap_or does 2020-08-16 20:47:50 +02:00
Hactar
d8f0a14da1
Fix typo in description of unnecessary_mut_passed 2020-08-16 14:43:34 -04:00
Dániel Buga
9c41822d34 Apply suggested change
Co-authored-by: Philipp Krones <hello@philkrones.com>
2020-08-16 20:27:54 +02:00
Dániel Buga
94cf90e5a5 Apply suggested change
Co-authored-by: Philipp Krones <hello@philkrones.com>
2020-08-16 20:27:54 +02:00
Dániel Buga
a7083eea1c Removed the extra lifetime parameter 2020-08-16 20:27:54 +02:00
Dániel Buga
75637c1eda Catch function calls in argument lists, add tests that tuples don't get linted 2020-08-16 20:27:54 +02:00
Dániel Buga
d7220dbd91 Run cargo dev update_lints 2020-08-16 20:27:54 +02:00
Dániel Buga
a7cc5d4068 Also simplify if the closure body is an index expression 2020-08-16 20:27:54 +02:00
Dániel Buga
848af39310 Add note to or_fun_call, list checked methods 2020-08-16 20:27:54 +02:00
Dániel Buga
a3ea65c2d9 Implement new lint 2020-08-16 20:27:22 +02:00
bors
3bd98895f1 Auto merge of #5725 - montrivo:should-impl-trait, r=flip1995
should_impl_trait - ignore methods with lifetime params

Fixes: #5617

changelog: don't lint should_implement_trait when an `Iterator::next` case has explicit parameters
2020-08-16 17:51:18 +00:00
bors
78857cc9d3 Auto merge of #5907 - wiomoc:feature/useless-vec-max-size, r=flip1995
appreciative too_large_for_stack in useless `vec!`

Fixes: #5847
changelog: Add `too_large_for_stack ` configuration option for `USELESS_VEC`
2020-08-16 17:30:12 +00:00
bors
dff7e74b27 Auto merge of #5903 - jrqc:needless_return, r=ebroto,flip1995
Needless return

Fixes #5858
changelog: fix false positive [`needless_return`]
2020-08-16 17:08:45 +00:00
bors
c8e05fc1c6 Auto merge of #5881 - wiomoc:feature/single-char-push_str, r=ebroto,flip1995
Lint `push_str` with a single-character string literal

Fixes #5875
changelog:  `* [single_char_push_str]`
2020-08-16 16:41:57 +00:00
bors
e522ca3c8d Auto merge of #5831 - chansuke:to_string_in_display, r=flip1995
Don't use `to_string` in impl Display

fixes #3876

this PR is derived from [Toxyxer's implementation](https://github.com/rust-lang/rust-clippy/pull/5574).
changelog: add [`to_string_in_display`] lint
2020-08-16 16:21:37 +00:00
Eduardo Broto
1a140dcc1c Improve needless_doctest_main by using the parser 2020-08-16 00:25:54 +02:00
jrqc
baa4cb1cdd early return removed 2020-08-16 00:24:27 +03:00
jrqc
96efaee552 cargo dev update_lints 2020-08-16 00:24:27 +03:00
jrqc
a7d5c2f967 Modifications according to the code review 2020-08-16 00:24:27 +03:00
jrqc
cd6ca72e0e Known problems changed 2020-08-16 00:24:27 +03:00
jrqc
65d10c7abf Borrow checker added 2020-08-16 00:24:27 +03:00
jrqc
85f4ef0fbd Visitor added 2020-08-16 00:24:27 +03:00
jrqc
6d18fe730e Make needless_return a late lint pass 2020-08-16 00:24:27 +03:00
bors
f0cc006964 Auto merge of #5910 - flip1995:rustup, r=flip1995
Rustup

r? @ghost

changelog: none
2020-08-15 12:05:11 +00:00
Christoph Walcher
b381ade179
elide lifetimes 2020-08-15 01:40:55 +02:00
Christoph Walcher
ae56e988a2
Merge lint with single_char_pattern 2020-08-15 01:40:55 +02:00
Christoph Walcher
72d2c2eab4
Lint push_str with a single-character string literal
Fixes #5875
2020-08-15 01:40:55 +02:00
Takayuki Nakata
f98ffa271d Fix FP for same_item_push
Don't emit a lint when `pushed_item` was declared as mutable variable.
2020-08-14 22:54:12 +09:00
chansuke
8e549978e5 Don't use to_string in impl Display 2020-08-14 21:38:11 +09:00
Christoph Walcher
8514b8407a
appreciative too_large_for_stack in useless vec!
Fixes: #5847
2020-08-14 14:29:16 +02:00
Erich Gubler
48a142559d
docs: typo in temporary_cstring_as_ptr: s/point/&s 2020-08-13 13:52:21 -06:00
Bastian Kauschke
429a1cedfa merge as_local_hir_id with local_def_id_to_hir_id 2020-08-13 16:55:16 +02:00
bors
d5f5487252 Auto merge of #5899 - JarredAllen:rc-box-suggestion, r=yaahc
Change Rc<Box<T>> recommendation to be Rc<T> instead of Box<T>

Fixes #5722

changelog: Suggest `Rc<Box<T>>` -> `Rc<T>` in [`redundant_allocation`] lint
2020-08-13 13:31:55 +00:00
bors
fc4fd91914 Auto merge of #5900 - ThibsG:ParensUselessConversion4750, r=phansch
Fix: keep parenthesis for suggestion in `useless_conversion` lint

Note: this lint was previously named `identity_conversion`.

fixes: #4750

changelog: fix parenthesis for `useless_conversion` lint suggestion
2020-08-13 05:27:29 +00:00
JarredAllen
4e28d99f41 Replace panics with early returns 2020-08-12 13:24:55 -07:00
ThibsG
5634c8da02 Fix: keep parenthesis for suggestion in useless_conversion lint 2020-08-12 21:44:02 +02:00
bors
dc1e09bdc1 Auto merge of #5897 - matthiaskrgr:no_clone_tts, r=flip1995
write.rs: don't clone TokenStream

changelog: none
2020-08-12 17:36:23 +00:00
JarredAllen
480ccc3dbe Change Rc<Box<T>> recommendation to be Rc<T> instead of Box<T> 2020-08-12 10:35:08 -07:00
bors
439bae62a4 Auto merge of #5884 - Ryan1729:patch-1, r=flip1995
Add the other overloadable operations to suspicious_arithmetic_impl

In #2268 I idly mused that the other user-overloadable operations could be added to this lint. Knowing that the lint was arguably incomplete was gnawing at the back of my mind, so I figured that I might as well make this PR, particularly given the change needed was so small.

changelog: Start warning on suspicious implementations of the `BitAnd`, `BitOr`, `BitXor`, `Rem`, `Shl`, and `Shr` traits.
2020-08-12 17:00:48 +00:00
bors
c73cf9f387 Auto merge of #5893 - matthiaskrgr:lint_msg, r=yaahc
fix remaining lint messages

r? @yaahc

changelog:  make remaining lint messages adhere to rustc dev guide lint message convention.
2020-08-12 16:33:57 +00:00
Ryan Wiedemann
c70581732d trailing comma
Should have actually ran rustfmt on it, rather than attempting to fix it manually
2020-08-12 10:33:16 -06:00
Ryan Wiedemann
616682deb7 formatting 2020-08-12 10:33:16 -06:00
Ryan Wiedemann
0fc61becb5 Add the other overloadable operations to suspicious_arithmetic_impl
In #2268 I idly mused that the other user-overloadable operations could be added to this lint. Knowing that the lint was arguably incomplete was gnawing at the back of my mind, so I figured that I might as well make this PR, particularly given the change needed was so small.
2020-08-12 10:33:16 -06:00
bors
2f4de2fc75 Auto merge of #5885 - Ryan1729:patch-2, r=flip1995
Add example of false positive to PTR_ARG docs.

Addresses #214

changelog: Add example of false positive to `ptr_arg` docs.
2020-08-12 15:51:39 +00:00
flip1995
318c74af2b
Merge remote-tracking branch 'upstream/master' into rustup 2020-08-12 17:03:54 +02:00
Ryan Wiedemann
7d2e42daec
fix typo pointed out in review comment
Co-authored-by: Philipp Krones <hello@philkrones.com>
2020-08-12 08:54:32 -06:00
Matthias Krüger
8a96b9cdfe write.rs: don't clone TokenStream 2020-08-12 14:35:31 +02:00
bors
fdc2f879f1 Auto merge of #75405 - flip1995:clippyup, r=Manishearth
Update Clippy

Biweekly Clippy update (2 days late, since I wanted to wait for https://github.com/rust-lang/rust/pull/75098)

r? @Manishearth
2020-08-12 00:34:19 +00:00
flip1995
027780ca2c Merge commit '09bd400243ed6f7059fedc0c1623aae3792521d6' into clippyup 2020-08-11 17:50:45 +02:00
Matthias Krüger
be3e695b60 if_not_else: make lint adhere to lint message convention 2020-08-11 16:43:53 +02:00
Matthias Krüger
605e027fda if_let_some_result: make lint adhere to lint message convention 2020-08-11 16:40:45 +02:00
Matthias Krüger
89591a78b8 enum-variant-names: make lint adhere to lint message convention 2020-08-11 16:38:20 +02:00
Matthias Krüger
db390f5e6a enum-clike-unportable-variant: tweak message a bit (Clike -> C-like) 2020-08-11 16:35:09 +02:00
Matthias Krüger
2de290d5c5 duration-subsec: make lint adhere to lint message convention 2020-08-11 16:31:02 +02:00
Matthias Krüger
423615693b pub-enum-variant-names: make lint adhere to lint message convention 2020-08-11 16:28:05 +02:00
Matthias Krüger
1f17c3b02b multiple_inherent_impl: make lint adhere to lint message convention 2020-08-11 15:28:51 +02:00
Matthias Krüger
bdf4dc3abd implicit-saturating-sub: make lint adhere to lint message convention 2020-08-11 15:22:59 +02:00
Matthias Krüger
f171f89aed int_plus_one: make lint adhere to lint message convention 2020-08-11 15:15:26 +02:00
Matthias Krüger
6af297f80e iter-next-slice: make lint adhere to lint message convention 2020-08-11 15:15:26 +02:00
Matthias Krüger
04867e004e mutex-atomic: make lint adhere to lint message convention 2020-08-11 15:15:26 +02:00
Matthias Krüger
ac194cafc1 map_clone: make lint adhere to lint message convention 2020-08-11 15:15:26 +02:00
Matthias Krüger
c0a9d64818 stable-sort-primitive: make lint adhere to lint message convention 2020-08-11 15:15:26 +02:00
bors
3337f7956c Auto merge of #5892 - matthiaskrgr:redundant_mut, r=flip1995
unnecessary-mut-passed: make lint message say if fn is a function or a method

changelog: refine "unnecessary-mut-passed" lint message
2020-08-11 12:52:41 +00:00
bors
09bd400243 Auto merge of #5891 - flip1995:rustup, r=flip1995
Rustup

r? @ghost

Sync back rust-lang/rust#75098

changelog: none
2020-08-11 12:32:10 +00:00
flip1995
9311c11d7c
Fix sync fallout 2020-08-11 14:21:27 +02:00
Matthias Krüger
b8713e3854 unnecessary-mut-passed: make lint message say if fn is a function or a method. 2020-08-11 14:16:56 +02:00
Yuki Okushi
91aa55d891 Rollup merge of #75226 - pnadon:miri-undef-uninit, r=RalfJung
Miri: Renamed "undef" to "uninit"

Renamed remaining references to "undef" to "uninit" when referring to Miri.

Impacted directories are:

- `src/librustc_codegen_llvm/consts.rs`
- `src/librustc_middle/mir/interpret/`
- `src/librustc_middle/ty/print/pretty.rs`
- `src/librustc_mir/`
- `src/tools/clippy/clippy_lints/src/consts.rs`

Upon building Miri based on the new changes it was verified that no changes needed to be made with the Miri project.

Related issue #71193
2020-08-11 16:23:47 +09:00
Dylan DPC
9e73d33680 Rollup merge of #75098 - Ryan1729:clippy-pointer-cast-lint-experiment, r=oli-obk
Clippy pointer cast lint experiment

This PR is an experiment about exposing more parts of `rustc_typeck` for use in `clippy`. In particular, the code that checks where a cast is valid or not was exposed, which necessitated exposing [`FnCtxt`](https://doc.rust-lang.org/nightly/nightly-rustc/rustc_typeck/check/struct.FnCtxt.html), and figuring out how to create an instance of that type inside `clippy`.

This was prompted by [this clippy issue](https://github.com/rust-lang/rust-clippy/issues/2064).

r? @oli-obk
2020-08-11 01:56:30 +02:00
bors
cc5bfd473c Auto merge of #5888 - matthiaskrgr:lints, r=yaahc
make a bunch of lints texts adhere to rustc dev guide

According to the rustc-dev guide: "The text should be matter of fact and avoid capitalization and periods, unless multiple sentences are needed"

changelog: make some lint output adhere to the rustc-dev guide
2020-08-10 22:40:42 +00:00
Matthias Krüger
1b46e485b2 Update clippy_lints/src/unwrap.rs
Co-authored-by: Jane Lusby <jlusby42@gmail.com>
2020-08-10 23:57:08 +02:00
Matthias Krüger
c514ff0c93 Update clippy_lints/src/neg_cmp_op_on_partial_ord.rs
Co-authored-by: Jane Lusby <jlusby42@gmail.com>
2020-08-10 23:57:08 +02:00
Matthias Krüger
dabf989195 neg-cmp-op-on-partial-ord: make lint adhere to lint message convention 2020-08-10 23:49:06 +02:00
Matthias Krüger
178da9b2ef neg-multiply: make lint adhere to lint message convention 2020-08-10 23:49:06 +02:00
Matthias Krüger
e519bb3c85 overflow-check-conditional: make lint adhere to lint message convention 2020-08-10 23:49:06 +02:00
Matthias Krüger
9178363574 path-buf-push-overwrite: make lint adhere to lint message convention 2020-08-10 23:49:06 +02:00
Matthias Krüger
81f77a411e range-zip-with-len: make lint adhere to lint message convention 2020-08-10 23:49:06 +02:00
Matthias Krüger
3e1e0c9bdb redundant-static-lifetimes: make lint adhere to lint message convention 2020-08-10 23:49:06 +02:00
Matthias Krüger
5d69ca5e11 also change "deprecated-attribute" message 2020-08-10 23:49:06 +02:00
Matthias Krüger
fe37ddbd11 suspicious-arithmetic-impl: make lint adhere to lint message convention 2020-08-10 23:49:06 +02:00
Matthias Krüger
7954c22a99 unknown: make lint adhere to lint message convention 2020-08-10 23:49:06 +02:00
Matthias Krüger
b36a6c9594 ref_in_deref: make lint adhere to lint message convention 2020-08-10 23:49:06 +02:00
Matthias Krüger
4418ff122f unneeded-field-pattern: make lint adhere to lint message convention 2020-08-10 23:49:06 +02:00
Matthias Krüger
2792260636 empty-liner-after-outer-attr: make lint adhere to lint message convention 2020-08-10 23:49:06 +02:00
Matthias Krüger
0db5cb1393 drop_bounds: make lint adhere to lint message convention 2020-08-10 23:49:06 +02:00
Matthias Krüger
590b91d8d4 double-parens: make lint adhere to lint message convention and do minor refactoring 2020-08-10 23:49:06 +02:00
Matthias Krüger
ba7a01a6a8 double-comparisons: make lint adhere to lint message convention 2020-08-10 23:49:06 +02:00
Matthias Krüger
6b0a6a70f8 default-trait-access: make lint adhere to lint message convention 2020-08-10 23:49:06 +02:00
Matthias Krüger
3d592b5154 cmp_null: make lint adhere to lint message convention 2020-08-10 23:49:06 +02:00
Matthias Krüger
8679dd375b unnecessary_unwrap, panicking_unwrap: make lints adhere to lint message convention 2020-08-10 23:49:06 +02:00
Matthias Krüger
9b7ab1d38b checked-conversions: make lint adhere to lint message convention 2020-08-10 23:48:57 +02:00
Eduardo Broto
5d66bd7bb3 Avoid or_fun_call for const_fn with no args 2020-08-10 23:38:58 +02:00
Matthias Krüger
40416c0fa8 naive_bytecount: make lint adhere to lint message convention 2020-08-10 20:55:23 +02:00
Matthias Krüger
fd379a889e builtin-type-shadow: make lint adhere to lint message convention 2020-08-10 20:55:23 +02:00
Matthias Krüger
0876f17d77 bool-comparison: make lint adhere to lint message convention 2020-08-10 20:55:23 +02:00
Matthias Krüger
e57aafe33f too-many-lines: make lint adhere to lint message convention 2020-08-10 20:55:23 +02:00
Ryan Wiedemann
fbf637d12c
formatting 2020-08-10 09:19:40 -06:00
Ryan Wiedemann
3e3e50bf0f
Add example of false positive to PTR_ARG docs.
Fixes #214
2020-08-10 08:50:20 -06:00
Philipp Krones
ee8db50e13
Rollup merge of #5871 - wiomoc:feature/methodcall-minmax, r=flip1995
Lint .min(x).max(y) with x < y

Fixes  #5854

changelog: Also lint `ord.min(a).max(b)`, where `a < b` in [`min_max`] lint
2020-08-10 14:56:29 +02:00
Philipp Krones
08ab29bed1
Rollup merge of #5870 - ebroto:5789_allow_unsafe_derive_deserialize, r=flip1995
enable #[allow(clippy::unsafe_derive_deserialize)]

Before this change this lint could not be allowed as the code we are checking is automatically generated.

changelog: Enable using the `allow` attribute on top of an ADT linted by [`unsafe_derive_deserialize`].

Fixes: #5789
2020-08-10 14:56:27 +02:00
Philipp Krones
8ee57eed79
Rollup merge of #5869 - wiomoc:feature/implicit-self, r=ebroto,flip1995
New lint against `Self` as an arbitrary self type

Fixes #5861

changelog: * [`needless_arbitrary_self_type`] [#5869](https://github.com/rust-lang/rust-clippy/pull/5869)
2020-08-10 14:56:26 +02:00
Philipp Krones
9da5b6d1d0
Rollup merge of #5825 - giraffate:same_item_push, r=Manishearth
Add the new lint `same_item_push`

changelog: Add the new lint `same_item_push`

Fixed #4078. As I said in https://github.com/rust-lang/rust-clippy/issues/4078#issuecomment-658184195, I referrerd to https://github.com/rust-lang/rust-clippy/pull/4647.
2020-08-10 14:56:25 +02:00
Tim Nielens
f9ba829f67 should_impl_trait - self linting 2020-08-09 16:09:08 +02:00
Tim Nielens
166c520e9a should_impl_trait - pr comments 2020-08-09 15:10:00 +02:00
Tim Nielens
7cc1a2ed87 should_implement_trait - filter on explicit lifetime param only 2020-08-09 15:10:00 +02:00
Tim Nielens
e6b2254f9e should_implement_trait - pr remarks 2020-08-09 15:10:00 +02:00
Tim Nielens
2bc0ecd44b should_implement_trait - add test cases for every checked trait method 2020-08-09 15:10:00 +02:00
Tim Nielens
a77e881ec9 should_impl_trait - ignore methods with lifetime params 2020-08-09 15:10:00 +02:00
bors
70c46de012 Auto merge of #5877 - ebroto:5872_loops_ice, r=Manishearth
Fix ICE in `loops` module

changelog: Fix ICE related to `needless_collect` when a call to `iter()` was not present.

I went for restoring the old suggestion of `next().is_some()` over `get(0).is_some()` given that `iter()` is not necessarily present (could be e.g. `into_iter()` or `iter_mut()`)  and that the old suggestion could change semantics, e.g. a call to `filter()` could be present between `iter()` and the collect part.

Fixes #5872
2020-08-08 18:44:48 +00:00
bors
3899d6001c Auto merge of #5878 - flip1995:rustup, r=flip1995
Rustup

r? @ghost

changelog: none
2020-08-08 17:28:34 +00:00
flip1995
fd87cdb357
Run fmt 2020-08-08 19:20:34 +02:00
Eduardo Broto
888657e09a Fix ICE in loops module 2020-08-08 18:13:43 +02:00
Philippe Nadon
2d1515a2c5 Miri: Renamed "undef" to "uninit"
Renamed remaining references to "undef" to "uninit" when referring to Miri.

Impacted directories are:

- src/librustc_codegen_llvm/consts.rs
- src/librustc_middle/mir/interpret/
- src/librustc_middle/ty/print/pretty.rs
- src/librustc_mir/
- src/tools/clippy/clippy_lints/src/consts.rs

Upon building Miri based on the new changes it was verified that no changes needed to be made with the Miri project.

Related issue #71193
2020-08-08 07:53:47 -06:00
Nicholas Nethercote
01bba2c532 Eliminate the SessionGlobals from librustc_ast.
By moving `{known,used}_attrs` from `SessionGlobals` to `Session`. This
means they are accessed via the `Session`, rather than via TLS. A few
`Attr` methods and `librustc_ast` functions are now methods of
`Session`.

All of this required passing a `Session` to lots of functions that didn't
already have one. Some of these functions also had arguments removed, because
those arguments could be accessed directly via the `Session` argument.

`contains_feature_attr()` was dead, and is removed.

Some functions were moved from `librustc_ast` elsewhere because they now need
to access `Session`, which isn't available in that crate.
- `entry_point_type()` --> `librustc_builtin_macros`
- `global_allocator_spans()` --> `librustc_metadata`
- `is_proc_macro_attr()` --> `Session`
2020-08-08 12:03:42 +10:00
Christoph Walcher
87e740921a
check impl Ord / is_float 2020-08-07 18:30:20 +02:00
Christoph Walcher
bfe610cc8d
ignore mutable self reference parameters 2020-08-07 18:08:51 +02:00
Christoph Walcher
e03f73e627
fix nits 2020-08-07 18:08:51 +02:00
Christoph Walcher
d635b76eaf
adopt comments from review 2020-08-07 18:08:51 +02:00
Christoph Walcher
737f62cb6e
fix doc 2020-08-07 18:08:51 +02:00
Christoph Walcher
e0a4988fcc
Lint against Self as an arbitrary self type
Fixes #5861
2020-08-07 18:08:51 +02:00
Vadim Petrochenkov
a285b58368 Add some comments for magic numbers + Add tests 2020-08-06 22:55:26 +03:00
Vadim Petrochenkov
d642c3b6f8 Fix clippy 2020-08-06 22:13:11 +03:00
Ryan Wiedemann
49c7e39d03 Apply suggestions from code review
Co-authored-by: Philipp Krones <hello@philkrones.com>
2020-08-06 07:57:31 -06:00
Ryan1729
42f3d39a54 run clippy_dev fmt
This seemed to overdo it a bit, affecting multiple submodules, and changing a file I didn't touch, so I didn't commit those changes
2020-08-06 06:15:57 -06:00
Ryan1729
0d2a378547 run clippy_dev update_lints 2020-08-06 06:11:23 -06:00
Ryan1729
8997c558d8 change filter to assert, and update comments 2020-08-06 04:24:25 -06:00
Ryan1729
94340d6e17 add documentation to functions that call do_check and add a test against lint ordering changing 2020-08-06 04:24:25 -06:00
Ryan1729
19f36bc2f3 add description to assert 2020-08-06 04:24:25 -06:00
Ryan1729
d38766ed96 address some review comments 2020-08-06 04:24:25 -06:00
Ryan1729
ccc4747f46 get the expected number of errors by acknowledging that other lints are covering the same ground 2020-08-06 04:24:25 -06:00
Ryan1729
de05212987 try putting the can_be_expressed_as_pointer_cast at the top and find that we still get an ICE 2020-08-06 04:24:24 -06:00
Ryan1729
34d3a0086c accidentally cause an ICE by putting the TRANSMUTES_EXPRESSIBLE_AS_PTR_CASTS handling after the match
The reason I did this in the first place was to try and figure out why I don't see my expected 7 error messages
2020-08-06 04:24:24 -06:00
Ryan1729
069f851671 initial compiling version of TRANSMUTES_EXPRESSIBLE_AS_PTR_CASTS 2020-08-06 04:24:24 -06:00
Ryan1729
5e84b8c2fb run cargo dev new_lint then move transmutes_expressible_as_ptr_casts into transmute module 2020-08-06 04:24:24 -06:00
Christoph Walcher
0abc4833e5
Lint .min(x).max(y) with x < y
Fixes #5854
2020-08-06 02:56:07 +02:00
Eduardo Broto
50a86d4927 enable #[allow(clippy::unsafe_derive_deserialize)] 2020-08-06 00:45:30 +02:00
bors
2d4c3379d3 Auto merge of #5809 - JarredAllen:stable_sort_primitive, r=Manishearth
Stable sort primitive

changelog: Implements #5762
2020-08-05 20:41:21 +00:00
bors
2eab060ab7 Auto merge of #5859 - ebroto:5765_manual_async_fn_fp, r=yaahc
manual_async_fn: take input lifetimes into account

The anonymous future returned from an `async fn` captures all input
lifetimes. This was not being taken into account.

See https://github.com/rust-lang/rfcs/blob/master/text/2394-async_await.md#lifetime-capture-in-the-anonymous-future

changelog: Take input lifetimes into account in [`manual_async_fn`].

Fixes #5765
2020-08-05 17:52:28 +00:00
Takayuki Nakata
610d4e3c8b rustfmt 2020-08-05 23:10:30 +09:00
Takayuki Nakata
e48685edef Just check if it contains _ in for pat 2020-08-05 23:00:03 +09:00
Takayuki Nakata
228f668282 Use mutated_variables 2020-08-05 23:00:03 +09:00
Takayuki Nakata
b7ceb4d3d7 rustfmt 2020-08-05 23:00:03 +09:00
Takayuki Nakata
14a4e3bcc8 Fix a lint message 2020-08-05 22:59:12 +09:00
Takayuki Nakata
1543e117cc cargo dev update_lints 2020-08-05 22:51:38 +09:00
Takayuki Nakata
2beb9090d1 Rename TypeckTables to TypeckResults 2020-08-05 22:51:38 +09:00
Takayuki Nakata
161f475100 Add test case for same_item_push 2020-08-05 22:51:38 +09:00
Takayuki Nakata
1e8ada3cab Add lint same_item_push 2020-08-05 22:51:38 +09:00
bors
3d7e3fdffd Auto merge of #5857 - tmiasko:try-err-poll, r=matthiaskrgr
try_err: Consider Try impl for Poll when generating suggestions

There are two different implementation of `Try` trait for `Poll` type:
`Poll<Result<T, E>>` and `Poll<Option<Result<T, E>>>`. Take them into
account when generating suggestions.

For example, for `Err(e)?` suggest either `return Poll::Ready(Err(e))` or
`return Poll::Ready(Some(Err(e)))` as appropriate.

Fixes #5855

changelog: try_err: Consider Try impl for Poll when generating suggestions
2020-08-05 08:43:37 +00:00
JarredAllen
542740c2ec Run cargo dev fmt 2020-08-04 17:53:29 -07:00
bors
2ceb8c6c2d Auto merge of #5865 - camsteffen:unnecessary-fold-known-probs, r=Manishearth
Remove obsolete known problems unnecessary_fold

The known problems looks to be obsolete since NLL is stable.

changelog: none
2020-08-04 23:09:35 +00:00
Philipp Krones
fb7ad956f6
Rollup merge of #5856 - phansch:remove-symbol-reexport, r=flip1995
Remove old Symbol reexport

I couldn't really tell what it was meant to improve. It seems more clear
without the renaming to `Name`?

changelog: none
2020-08-04 12:06:43 +02:00
Philipp Krones
84455b211f
Rollup merge of #5852 - wiomoc:feature/lint-duplicate-trait, r=Manishearth
Add lint for duplicate methods of trait bounds

rel: #5777

changelog: Add [`trait_duplication_in_bounds`] lint
2020-08-04 12:06:41 +02:00
Philipp Krones
888067c623
Rollup merge of #5848 - Ryan1729:add-derive_ord_xor_partial_ord-lint, r=matthiaskrgr
Add derive_ord_xor_partial_ord lint

Fix #1621

Some remarks:
This PR follows the example of the analogous derive_hash_xor_partial_eq lint where possible.
I initially tried using the `match_path` function to identify `Ord` implementation like the derive_hash_xor_partial_eq lint currently does, for `Hash` implementations but that didn't work.

Specifically, the structs at the top level were getting paths that matched `&["$crate", "cmp", "Ord"]` instead of `&["std", "cmp", "Ord"]`. While trying to figure out what to do instead I saw the comment at the top of [clippy_lints/src/utils/paths.rs](f5d429cd76/clippy_lints/src/utils/paths.rs (L5)) that mentioned [this issue](https://github.com/rust-lang/rust-clippy/issues/5393) and suggested to use diagnostic items instead of hardcoded paths whenever possible. I looked for a way to identify `Ord` implementations with diagnostic items, but (possibly because this was the first time I had heard of diagnostic items,) I was unable to find one.

Eventually I tried using `get_trait_def_id` and comparing `DefId` values directly and that seems to work as expected. Maybe there's a better approach however?

changelog: new lint: derive_ord_xor_partial_ord
2020-08-04 12:06:40 +02:00
Philipp Krones
378ba2e03e
Rollup merge of #5846 - dima74:map_flatten.map_to_option, r=flip1995
Handle mapping to Option in `map_flatten` lint

Fixes #4496

The existing [`map_flatten`](https://rust-lang.github.io/rust-clippy/master/index.html#map_flatten) lint suggests changing `expr.map(...).flatten()` to `expr.flat_map(...)` when `expr` is `Iterator`. This PR changes suggestion to `filter_map` instead of `flat_map` when mapping to `Option`, because it is more natural

Also here are some questions:
* If expression has type which implements `Iterator` trait (`match_trait_method(cx, expr, &paths::ITERATOR) == true`), how can I get type of iterator elements? Currently I use return type of closure inside `map`, but probably it is not good way
* I would like to change suggestion range to cover only `.map(...).flatten()`, that is from:
```
    let _: Vec<_> = vec![5_i8; 6].into_iter().map(|x| 0..x).flatten().collect();
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using `flat_map` instead: `vec![5_i8; 6].into_iter().flat_map
```
to
```
    let _: Vec<_> = vec![5_i8; 6].into_iter().map(|x| 0..x).flatten().collect();
                                             ^^^^^^^^^^^^^^^^^^^^^^^^ help: try using `flat_map` instead: `.flat_map(|x| 0..x)`
```
Is it ok?
* Is `map_flatten` lint intentionally in `pedantic` category, or could it be moved to `complexity`?

changelog: Handle mapping to Option in [`map_flatten`](https://rust-lang.github.io/rust-clippy/master/index.html#map_flatten) lint
2020-08-04 12:06:39 +02:00
Philipp Krones
ca2a25d966
Rollup merge of #5837 - JarredAllen:needless_collect, r=phansch
needless_collect: catch x: Vec<_> = iter.collect(); x.into_iter() ...

changelog: Expand the needless_collect lint as suggested in #5627 (WIP).

This PR is WIP because I can't figure out how to make the multi-part suggestion include its changes in the source code (the fixed is identical to the source, despite the lint making suggestions). Aside from that one issue, I think this should be good.
2020-08-04 12:06:38 +02:00
bors
1968aede0f Auto merge of #5867 - flip1995:rustup, r=flip1995
Rustup

r? @ghost

changelog: none
2020-08-04 09:25:05 +00:00
Vadim Petrochenkov
52a9c157d0 rustc_ast: (Nested)MetaItem::check_name -> has_name
For consistency with `Attribute::has_name` which doesn't mark the attribute as used either.

Replace all uses of `check_name` with `has_name` outside of rustc
2020-08-04 00:34:11 +03:00
Cameron Steffen
0ccdf2913a
Remove obsolete known problems unnecessary_fold 2020-08-03 16:23:20 -05:00
Tomasz Miąsko
e9677105bf try_err: Consider Try impl for Poll when generating suggestions
There are two different implementation of Try trait for Poll type;
Poll<Result<T, E>> and Poll<Option<Result<T, E>>>. Take them into
account when generating suggestions.

For example, for Err(e)? suggest either return Poll::Ready(Err(e)) or
return Poll::Ready(Some(Err(e))) as appropriate.
2020-08-03 20:48:18 +02:00
JarredAllen
25abd7ae76 Create stable_sort_primitive lint 2020-08-03 11:17:43 -07:00
Christoph Walcher
e521c67e5f
early return on empty parameters/where clause 2020-08-03 12:32:23 +02:00
JarredAllen
5e10b039a3 Implement review suggestions 2020-08-02 21:46:18 -07:00
JarredAllen
bb2c14e92b Fix a bug causing it to be too trigger-happy 2020-08-02 21:34:17 -07:00
JarredAllen
a849483294 Fix formatting and dogfood fallout 2020-08-02 21:34:17 -07:00
JarredAllen
3657c92ac9 Check for other things which can be used indirectly 2020-08-02 21:34:17 -07:00
JarredAllen
3ee61373fe Write the lint and write tests 2020-08-02 21:34:17 -07:00
Eduardo Broto
e336fe80d2 manual_async_fn: take input lifetimes into account
The anonymous future returned from an `async fn` captures all input
lifetimes. This was not being taken into account.

See https://github.com/rust-lang/rfcs/blob/master/text/2394-async_await.md#lifetime-capture-in-the-anonymous-future
2020-08-03 00:36:28 +02:00
Philipp Hansch
bb6e857980
fmt 2020-08-02 14:22:54 +02:00
Philipp Hansch
cb00cdf0d7
Remove old Symbol reexport
I couldn't really tell what it was meant to improve. It seems more clear
without the renaming to `Name`?
2020-08-02 11:25:03 +02:00
Valentin Lazureanu
aa3d9ca0e9 Rename HAIR to THIR (Typed HIR). 2020-07-31 22:15:12 +00:00
Dmitry Murzin
d4ba561aaf
Review fixes 2020-07-31 00:28:21 +03:00
Dmitry Murzin
a427c99f3d
Handle mapping to Option in map_flatten lint 2020-07-30 23:23:33 +03:00
Christoph Walcher
2b7fde6a4b
typo fix 2020-07-29 16:10:15 +02:00
bors
2e0f8b6cc6 Auto merge of #5843 - dima74:iter_skip_next.add-suggestion, r=phansch
Add suggestion for `iter_skip_next` lint

changelog: Add suggestion for [`iter_skip_next`](https://rust-lang.github.io/rust-clippy/master/index.html#iter_skip_next) lint
2020-07-29 06:10:55 +00:00
flip1995
04f4471761
Merge remote-tracking branch 'upstream/master' into rustup 2020-07-29 03:17:23 +02:00
Christoph Walcher
94c50bc8c9
Lint duplicate methods of trait bounds
Fixes #5777
2020-07-28 16:42:26 +02:00
Bastian Kauschke
133e1d6773 clippy 2020-07-27 21:17:28 +02:00
Bastian Kauschke
6ce37fab95 introduce PredicateAtom 2020-07-27 21:07:37 +02:00
Bastian Kauschke
88787083f4 this might be unqualified, but at least it's now quantified 2020-07-27 21:06:36 +02:00
Bastian Kauschke
dfa1af2059 clippy 2020-07-27 21:06:36 +02:00
Takayuki Nakata
3a9ccffed8 chmod 644 clippy_lints/src/utils/ast_utils.rs 2020-07-27 22:27:54 +09:00
Ryan1729
94b10a6e5a run cargo dev update_lints 2020-07-27 00:31:09 -06:00
Ryan1729
12a6eee045 fill in lint description for DERIVE_ORD_XOR_PARTIAL_ORD 2020-07-27 00:22:39 -06:00
Ryan1729
ca03f2b650 s/pord/partial_ord/ to fix dogfood failure 2020-07-27 00:21:11 -06:00
Ryan1729
668b7474b4 run cargo dev fmt and fix overly long line 2020-07-26 23:30:00 -06:00
Ryan1729
431924ccf6 add description for derive_ord_xor_partial_ord 2020-07-26 23:15:36 -06:00
Ryan1729
7dc974815e remove is_local check since getting the def_id directly makes it unnecessary 2020-07-26 23:06:36 -06:00
Ryan1729
a8d6eda930 use get_trait_def_id to check for Ord trait 2020-07-26 23:04:04 -06:00
Ryan1729
068acbd27b initial implementation based on code for derive_hash_xor_partial_eq which is showing one error when there should be four 2020-07-26 22:04:46 -06:00
Ryan1729
fc20ee63a1 move derive_ord_xor_partial_ord into derive mod so we can reuse derive_hash_xor_partial_eq code later 2020-07-26 20:54:04 -06:00
Ryan1729
5a644964fc run cargo dev new_lint
specifically:
cargo dev new_lint --name derive_ord_xor_partial_ord --category correctness --pass late
2020-07-26 20:40:57 -06:00
bors
f5d429cd76 Auto merge of #5820 - ThibsG:FixSuspiciousArithmeticImpl, r=flip1995
Fix FP for `suspicious_arithmetic_impl` from `suspicious_trait_impl` …

As discussed in #3215, the `suspicious_trait_impl` lint causes too many false positives, as it is complex to find out if binary operations are suspicious or not.

This PR restricts the number of binary operations to at most one, otherwise we don't lint.
This can be seen as very conservative, but at least FP can be reduced to bare minimum.

Fixes: #3215

changelog: limit the `suspicious_arithmetic_impl` lint to one binop, to avoid many FPs
2020-07-26 19:48:17 +00:00
flip1995
d164ab65f7 Merge commit 'da5a6fb1b65ec6581a67e942a3850f6bc15a552c' into clippyup 2020-07-26 21:07:07 +02:00
Takayuki Nakata
c81bbd05b9 Fix FP useless_conversion
Fix #5833.
2020-07-25 23:58:22 +09:00
Dmitry Murzin
b375f1dd20
Add suggestion for iter_skip_next lint 2020-07-25 17:11:55 +03:00
bors
79f948ec0a Auto merge of #5829 - JohnTitor:epsilon, r=flip1995
Use `(std::)f64::EPSILON` in the examples as suggested in the lints

`float_cmp(_const)` suggests using `{f32|f64}::EPSILON` and it'd be great if the docs mentioned it.

changelog: none
2020-07-23 18:48:35 +00:00
bors
8c83d5f484 Auto merge of #5830 - flip1995:rustup, r=flip1995
trait_sel: only test predicates w/ no substs

r? @ghost
changelog: none
2020-07-21 22:10:04 +00:00
Yuki Okushi
142a273441
Use (std::)f64::EPSILON in the examples as suggested in the lints 2020-07-22 05:23:55 +09:00
David Wood
b7c8b96e66 trait_sel: only test predicates w/ no substs
This commit modifies the `substitute_normalize_and_test_predicates`
query, renaming it to `impossible_predicates` and only checking
predicates which do not require substs. By making this change,
polymorphization doesn't have to explicitly support vtables.

Signed-off-by: David Wood <david@davidtw.co>
2020-07-20 11:23:26 +01:00
bors
61e3d8a55c Auto merge of #5824 - tmiasko:manually-drop-clone, r=Manishearth
Ignore not really redundant clones of ManuallyDrop

"Redundant" clones of `ManuallyDrop` are sometimes used for the side effect of
invoking the clone, without running the drop implementation of the inner type.
In other words, they aren't really redundant. For example, futures-rs crate:

```rust
#[allow(clippy::redundant_clone)] // The clone here isn't actually redundant.
unsafe fn increase_refcount<T: ArcWake>(data: *const ()) {
    // Retain Arc, but don't touch refcount by wrapping in ManuallyDrop
    let arc = mem::ManuallyDrop::new(Arc::<T>::from_raw(data as *const T));
    // Now increase refcount, but don't drop new refcount either
    let _arc_clone: mem::ManuallyDrop<_> = arc.clone();
}
```

changelog: Ignore redundant clone lint for ManuallyDrop.
2020-07-20 01:36:21 +00:00
Tomasz Miąsko
a5cdd4aeb1 Ignore not really redundant clones of ManuallyDrop
"Redundant" clones of `ManuallyDrop` are sometimes used for the side effect of
invoking the clone, without running the drop implementation of the inner type.
In other words, they aren't really redundant. For example, futures-rs crate:

```rust
#[allow(clippy::redundant_clone)] // The clone here isn't actually redundant.
unsafe fn increase_refcount<T: ArcWake>(data: *const ()) {
    // Retain Arc, but don't touch refcount by wrapping in ManuallyDrop
    let arc = mem::ManuallyDrop::new(Arc::<T>::from_raw(data as *const T));
    // Now increase refcount, but don't drop new refcount either
    let _arc_clone: mem::ManuallyDrop<_> = arc.clone();
}
```

Ignore redundant clone lint for ManuallyDrop.
2020-07-20 00:56:27 +02:00
Tim Nielens
1ac8b85c9f redundant_closure_call - pr review 2020-07-20 00:36:31 +02:00
Tim Nielens
9603d9652b redundant_closure_call - add support for shadowed closures 2020-07-20 00:30:43 +02:00
Tim Nielens
0fecaf1abc redundant_closure_call - extract lint from misc_early.rs, adapt to LatePass 2020-07-20 00:30:43 +02:00
Tim Nielens
c720d823e1 redundant_closure_call - don't lint when used more than once 2020-07-20 00:30:43 +02:00
ThibsG
442c8ae23b Fix FP for suspicious_arithmetic_impl from suspicious_trait_impl lint 2020-07-19 00:00:17 +02:00
bors
8cf4219c16 Auto merge of #5815 - JarredAllen:redundant_pattern_bugfix, r=flip1995
Redundant pattern bugfix

changelog: Fixes the bug reported #5766
2020-07-18 14:43:36 +00:00
flip1995
0f501ac1db
Merge remote-tracking branch 'upstream/master' into rustup 2020-07-18 15:09:58 +02:00
bors
9a945c7413 Auto merge of #5817 - flip1995:rustup, r=flip1995
Rustup

r? @ghost

Preparation for emergency Clippyup to fix an ICE #5816

changelog: none
2020-07-17 19:41:39 +00:00
flip1995
3d3a13d871
Fix sync fallout (fmt) 2020-07-17 21:39:05 +02:00
JarredAllen
e85b590936 Fix bug in lint 2020-07-17 10:40:01 -07:00
Takayuki Nakata
e5105e82d3 Fix typo 2020-07-17 22:51:57 +09:00
Valentin Lazureanu
5a20489c5c Rename TypeckTables to TypeckResults. 2020-07-17 08:47:04 +00:00
bors
57678c8315 Auto merge of #5811 - JarredAllen:panic_multiple_args, r=phansch
Panic multiple args

changelog: Fixes bug with `panic` lint reported in #5767. I also did the same changes to the lints for `todo`, `unimplemented` and `unreachable`, so those lints should now also detect calls to those macros with a message.
2020-07-17 06:41:20 +00:00
Matthias Krüger
3618b97f59 fix typos (found by codespell) 2020-07-17 01:58:41 +02:00
JarredAllen
07867fde59 Clean up dogfood fallout 2020-07-16 16:58:21 -07:00
JarredAllen
70a41a9281 Enable detecting multiple-argument panics 2020-07-16 16:51:12 -07:00
Nicholas Nethercote
62db617e40 Avoid storing SymbolStr in a struct.
It's intended only for very temporary use.
2020-07-17 08:28:22 +10:00
bors
9349441863 Auto merge of #5788 - Leulz:shadow-unrelated-fix-rhs, r=flip1995
Removing RHS snippet from SHADOW_UNRELATED message.

Fixes #5703

I am not sure if I reinvented the wheel here, but I could not really find a snippet function that did this truncation, so I created the function. Please tell me if there was a more obvious way to do this, I am new here. 😄

changelog: Truncates multi-line RHS in shadow_unrelated message if it has more than 5 lines.
2020-07-15 19:09:21 +00:00
flip1995
d9bf74e2f2
Merge remote-tracking branch 'upstream/master' into rustup 2020-07-15 20:15:57 +02:00
Leo Meira Vital
a0640457a9 Removing snippet from SHADOW_UNRELATED message. 2020-07-15 11:12:38 -03:00
Bastian Kauschke
bf3104ec24 WithOptConstParam::dummy -> WithOptConstParam::unknown 2020-07-15 13:06:47 +02:00
Bastian Kauschke
c5b9463d26 improve naming 2020-07-15 13:06:47 +02:00
Bastian Kauschke
29de25b8a2 const_eval_resolve 2020-07-15 12:58:32 +02:00
Nicholas Nethercote
f2f99be2ff Remove lots of Symbol::as_str() calls.
In various ways, such as changing functions to take a `Symbol` instead
of a `&str`.
2020-07-15 09:01:35 +10:00
bors
128c5dec92 Auto merge of #5793 - warner:5783-nth-zero-next, r=flip1995
improve advice in iter_nth_zero

fixes #5783

*Please keep the line below*
changelog:  For iter_nth_zero, the "use .next()" replacement advice is on the last line of the code snippet, where it is vulnerable to truncation. Display that advice at the beginning instead.
2020-07-14 16:58:23 +00:00
Brian Warner
e83b3eb993 formatting nits 2020-07-14 09:20:19 -07:00
Matthias Krüger
126790999a new lint: Returning unit from closures expecting Ord
This lint catches cases where the last statement of a closure expecting
an instance of Ord has a trailing semi-colon. It compiles since the
closure ends up return () which also implements Ord but causes
unexpected results in cases such as sort_by_key.

Fixes #5080

reprise: rebase, update and address all concerns
2020-07-14 15:54:04 +02:00
flip1995
6f25adbd5a Merge commit '2ca58e7dda4a9eb142599638c59dc04d15961175' into clippyup 2020-07-14 14:59:59 +02:00
bors
2ca58e7dda Auto merge of #5732 - bjorn3:patch-1, r=flip1995
Rename collapsable_if fix suggestion to "collapse nested if block"

The name "try" is confusing when shown as quick fix by rust-analyzer

changelog: Rename `collapsable_if` fix suggestion to "collapse nested if block"
2020-07-14 09:39:01 +00:00
bors
12df6384b9 Auto merge of #5773 - giraffate:repeat_once, r=flip1995
Add a lint for `.repeat(1)`

changelog: New lint `repeat_once`

fix #3028.
2020-07-14 09:13:58 +00:00
Takayuki Nakata
b4091032ab Use .is_some() not Some(_) 2020-07-14 08:08:13 +09:00
Brian Warner
201999ccfd improve advice in iter_nth_zero
The "use .next()" replacement advice is on the last line of the code snippet,
where it is vulnerable to truncation. Display that advice at the beginning
instead.

closes #5783
2020-07-13 10:59:45 -07:00
bjorn3
ff796b6d70 Rename collapsable_if fix suggestion to "collapse nested if block"
The name "try" is confusing when shown as quick fix by rust-analyzer
2020-07-13 17:54:57 +02:00
Takayuki Nakata
f2419b9d62 Refactoring to use `constant_context
Use `constant_context`, `.is_str()` and `builtin_index()` to simplify.
2020-07-14 00:23:20 +09:00
bors
4b8700879c Auto merge of #5792 - flip1995:rollup-torc1we, r=flip1995
Rollup of 5 pull requests

Successful merges:

 - #5443 (Some accuracy lints for floating point operations)
 - #5752 (Move range_minus_one to pedantic)
 - #5756 (unnecessary_sort_by: avoid linting if key borrows)
 - #5784 (Fix out of bounds access by checking length equality BEFORE accessing by index.)
 - #5786 (fix phrase in new_lint issue template)

Failed merges:

r? @ghost

changelog: rollup
2020-07-13 14:21:20 +00:00
Philipp Krones
26ede3115f
Rollup merge of #5784 - matthiaskrgr:ice_5780, r=phansch
Fix out of bounds access by checking length equality BEFORE accessing by index.

Fixes #5780

changelog: fix out of bounds access in unnested_or_patterns lint.

Edit: I did not bother reducing a testcase from `librustc_typeck` crate but I can confirm that with the change the crash no longer occurs.
2020-07-13 15:59:45 +02:00
Philipp Krones
32ef448bdb
Rollup merge of #5756 - ebroto:5754_sort_by, r=flip1995
unnecessary_sort_by: avoid linting if key borrows

changelog: Avoid linting if key borrows in [`unnecessary_sort_by`]

Fixes #5754
Closes #2313
2020-07-13 15:59:44 +02:00
Philipp Krones
019e281d15
Rollup merge of #5752 - chrisduerr:pedantic_ranges, r=flip1995
Move range_minus_one to pedantic

This moves the range_minus_one lint to the pedantic category, so there
will not be any warnings emitted by default. This should work around
problems where the suggestion is impossible to resolve due to the range
consumer only accepting a specific range implementation, rather than the
`RangeBounds` trait (see #3307).

While it is possible to work around this by extracting the boundary into
a variable, I don't think clippy should encourage people to disable or
work around lints, but instead the lints should be fixable. So hopefully
this will help until a proper implementation checks what the range is
used for.

*Please keep the line below*
changelog: move [`range_minus_one`] to pedantic
2020-07-13 15:59:42 +02:00
Philipp Krones
75d43aac73
Rollup merge of #5443 - thiagoarrais:issue-2040, r=flip1995
Some accuracy lints for floating point operations

This will add some lints for accuracy on floating point operations suggested by @clarfon in #2040 (fixes #2040).

These are the remaining lints:

- [x] x.powi(2) => x * x
- [x] x.logN() / y.logN() => x.logbase(y)
- [x] x.logbase(E) => x.log()
- [x] x.logbase(10) => x.log10()
- [x] x.logbase(2) => x.log2().
- [x] x * PI / 180 => x.to_radians()
- [x] x * 180 / PI => x.to_degrees()
- [x] (x + 1).log() => x.log_1p()
- [x] sqrt(x * x + y * y) => x.hypot(y)

changelog: Included some accuracy lints for floating point operations
2020-07-13 15:59:41 +02:00
bors
fa4a737fba Auto merge of #5790 - flip1995:rustup, r=flip1995
Rustup

r? @ghost

changelog: none
2020-07-13 13:53:11 +00:00
Matthias Krüger
1b3bc16533 Fix out of bounds access by checking length equality BEFORE accessing by index.
Fixes #5780
2020-07-11 12:30:18 +02:00
bors
7d611d9224 Auto merge of #5769 - robojumper:match_like_matches_macro, r=phansch
new lint: match_like_matches_macro

Suggests using the `matches!` macro from `std` where appropriate.

`redundant_pattern_matching` has been moved into the `matches` pass to allow suppressing the suggestion where `is_some` and friends are a better replacement.

changelog: new lint: `match_like_matches_macro`
2020-07-10 18:10:08 +00:00
Takayuki Nakata
780a4c87de Fix typo 2020-07-10 23:53:15 +09:00
Christian Duerr
ba2a85dadc
Run update_lints 2020-07-10 15:20:00 +02:00
Christian Duerr
298a1fa3bd
Move range_minus_one to pedantic
This moves the range_minus_one lint to the pedantic category, so there
will not be any warnings emitted by default. This should work around
problems where the suggestion is impossible to resolve due to the range
consumer only accepting a specific range implementation, rather than the
`RangeBounds` trait (see #3307).

While it is possible to work around this by extracting the boundary into
a variable, I don't think clippy should encourage people to disable or
work around lints, but instead the lints should be fixable. So hopefully
this will help until a proper implementation checks what the range is
used for.
2020-07-10 15:20:00 +02:00
Tamir Duberstein
cf91c54cc6 Avoid "whitelist"
Other terms are more inclusive and precise.
2020-07-10 07:39:28 -04:00
bors
45eea9a822 Auto merge of #5771 - montrivo:bugfix/single-match-else, r=matthiaskrgr
single_match_else - single expr/stmt else block corner case

One approach to fix #3489.
See discussion in the issue.

changelog: single_match_else - single expr/stmt else block corner case fix
2020-07-09 12:03:14 +00:00
Tim Nielens
dac19e3afc single_match_else - single expr/stmt else block corner case 2020-07-09 12:04:27 +02:00
Eduardo Broto
db1c946aaa unnecessary_sort_by: avoid linting if key borrows 2020-07-08 21:31:59 +02:00
robojumper
37d75da266 make match_like_matches_macro only apply to matches with a wildcard 2020-07-08 18:37:20 +02:00
bors
e12a316b01 Auto merge of #5776 - flip1995:rustup, r=flip1995
Rustup

changelog: none

r? @ghost
2020-07-08 15:56:23 +00:00
Takayuki Nakata
5307cb5614 Add a lint for .repeat(1)
fix #3028.
2020-07-07 23:13:39 +09:00
bors
c41fcad908 Auto merge of #74117 - Manishearth:rollup-ds7z0kx, r=Manishearth
Rollup of 14 pull requests

Successful merges:

 - #70563 ([rustdoc] Page hash handling)
 - #73856 (Edit librustc_lexer top-level docs)
 - #73870 (typeck: adding type information to projection)
 - #73953 (Audit hidden/short code suggestions)
 - #73962 (libstd/net/tcp.rs: #![deny(unsafe_op_in_unsafe_fn)])
 - #73969 (mir: mark mir construction temporaries as internal)
 - #73974 (Move A|Rc::as_ptr from feature(weak_into_raw) to feature(rc_as_ptr))
 - #74067 (rustdoc: Restore underline text decoration on hover for FQN in header)
 - #74074 (Fix the return type of Windows' `OpenOptionsExt::security_qos_flags`.)
 - #74078 (Always resolve type@primitive as a primitive, not a module)
 - #74089 (Add rust-analyzer to the build manifest)
 - #74090 (Remove unused RUSTC_DEBUG_ASSERTIONS)
 - #74102 (Fix const prop ICE)
 - #74112 (Expand abbreviation in core::ffi description)

Failed merges:

r? @ghost
2020-07-07 00:56:44 +00:00
Manish Goregaokar
245b006a2e Rollup merge of #73870 - sexxi-goose:projection-ty, r=nikomatsakis
typeck: adding type information to projection

This commit modifies the Place as follow:
* remove 'ty' from ProjectionKind
* add type information into to Projection
* replace 'ty' in Place with 'base_ty'
* introduce 'ty()' in `Place` to return the final type of the `Place`
* introduce `ty_before_projection()` in `Place` to return the type of
  a `Place` before i'th projection is applied

Closes https://github.com/rust-lang/project-rfc-2229/issues/5
2020-07-06 17:45:20 -07:00
bors
4705037374 Auto merge of #73978 - Mark-Simulacrum:shrink-paramenv, r=nnethercote
Shrink ParamEnv to 16 bytes

r? @nnethercote

x.py check passes but I haven't tried running perf or tests
2020-07-06 20:44:16 +00:00
Thiago Arrais
3065201eb3 Includes TODO for constants equivalent to π/180 2020-07-06 13:45:43 -03:00
Thiago Arrais
6be9491eac Reclassify powi(2) lint under suboptimal_flops 2020-07-06 13:45:43 -03:00
Thiago Arrais
db7bc6b3bd Place radian lints under suboptimal_flops 2020-07-06 13:45:43 -03:00
Thiago Arrais
f5596826fa Better copy for lint message
Since x.log(y) is actually implemented as x.ln() / y.ln()
2020-07-06 13:45:43 -03:00
Thiago Arrais
076ec872ce Lint for to_radians and to_degrees 2020-07-06 13:45:39 -03:00
robojumper
1740dda763 fix match_like_matches_macro in clippy 2020-07-06 18:35:58 +02:00
Thiago Arrais
0c8afa39ce Lint x.log(b) / y.log(b) => x.log(y) 2020-07-06 13:32:31 -03:00
robojumper
2e8a1be444 new lint: match_like_matches_macro 2020-07-06 18:25:20 +02:00
Thiago Arrais
f62798454c Lint (x * x + y * y).sqrt() => x.hypot(y) 2020-07-06 13:23:17 -03:00
Thiago Arrais
a6f1af75d7 Lint for x.powi(2) => x * x 2020-07-06 13:23:17 -03:00
Mark Rousskov
3503247c11 Shrink ParamEnv to 16 bytes 2020-07-05 09:51:42 -04:00
JarredAllen
c8f700ea69 Fixed compile errors 2020-07-03 21:22:23 -07:00
JarredAllen
1c32263176 Formatted updates to lints 2020-07-03 16:51:44 -07:00
JarredAllen
6ce981225b Clean existing lint code to match new lint 2020-07-03 16:51:44 -07:00
JarredAllen
ccb999851a Fix compile error from library change 2020-07-03 16:50:45 -07:00
JarredAllen
93f0f5d37b Last few tweaks 2020-07-03 16:50:45 -07:00
JarredAllen
5150277a4f Used clippy to clean itself 2020-07-03 16:50:45 -07:00
JarredAllen
5e20475e47 Don't lint if contains a macro 2020-07-03 16:47:38 -07:00
JarredAllen
7c4de9d3de Refactoring pt. 2 2020-07-03 16:47:38 -07:00
JarredAllen
f73b455b99 Refactoring 2020-07-03 16:47:38 -07:00
JarredAllen
88c8afdddf Handle ref, mut, &, and &mut on the option 2020-07-03 16:47:38 -07:00
JarredAllen
b85796fe36 Properly parenthesize to avoid operator precedence errors 2020-07-03 16:47:38 -07:00
JarredAllen
82f8d4d6f1 Stop linting on macros and correctly use braces for constructs 2020-07-03 16:47:38 -07:00
JarredAllen
bf48a2d50d Lint for if let Some(x) = ... instead of Option::map_or 2020-07-03 16:47:38 -07:00
bors
57cdf2dc16 Auto merge of #4841 - phaylon:pattern-type-mismatch, r=flip1995
Added restriction lint: pattern-type-mismatch

changelog: Added a new restriction lint `pattern-type-mismatch`. This lint is especially helpful for beginners learning about the magic behind pattern matching. (This explanation might be worth to include in the next changelog.)
2020-07-03 16:41:26 +00:00
Robert Sedlacek
c0fd452840 fmt fix 2020-07-03 18:23:36 +02:00
Robert Sedlacek
aa4bee228f LateContext has only one lifetime parameter now 2020-07-03 18:20:19 +02:00
Robert Sedlacek
d617551a6a Expanded lint documentation 2020-07-03 18:12:29 +02:00
Robert Sedlacek
92ecc53691 Catching up with rustc changes 2020-07-03 18:12:29 +02:00
flip1995
6447507ab1 Fix rebase fallout 2020-07-03 18:12:29 +02:00
Robert Sedlacek
55877d7b4a span_help_and_lint -> span_lint_and_help 2020-07-03 18:12:29 +02:00
Robert Sedlacek
c3c402783f Added restriction lint: pattern-type-mismatch 2020-07-03 18:12:29 +02:00
ThibsG
2d5930a3da Don't lint for predicates generated in macros 2020-07-03 17:29:54 +02:00
ThibsG
d5a8f03a35 Take generic args into account for bounded type 2020-07-03 17:29:54 +02:00
ThibsG
754bfb1dc8 Add configurable threshold for type_repetition_in_bounds lint 2020-07-03 17:29:54 +02:00
flip1995
a7c58e66d4
Merge remote-tracking branch 'upstream/master' into rustup 2020-07-03 12:50:41 +02:00
Eduard-Mihai Burtescu
30c046ede4 Use 'tcx for references to AccessLevels wherever possible. 2020-07-03 00:04:48 +03:00
Eduard-Mihai Burtescu
590e07bbc2 rustc_lint: avoid using TypeckTables::empty for LateContext. 2020-07-02 16:51:04 +03:00
Philipp Hansch
d347d0cf59
Deprecate regex_macro lint 2020-07-01 13:05:41 +02:00
bors
36b7983580 Auto merge of #5758 - ebroto:5704_unnested_or_pats, r=flip1995
Require `or_patterns` to suggest nesting them

changelog: Require `#![feature(or_patterns)]` to trigger [`unnested_or_patterns`]

Fixes #5704
2020-06-30 22:23:23 +00:00
Eduardo Broto
bff6c435ef Require or_patterns to suggest nesting them 2020-07-01 00:15:21 +02:00
Eduardo Broto
c5d8f530e0 Move blanket_clippy_restriction_lints to "style" 2020-06-30 21:56:19 +02:00
Eduardo Broto
814349f941 Lint enabling the whole restriction group 2020-06-30 21:56:19 +02:00
flip1995
1e861a2663
Merge remote-tracking branch 'upstream/master' into rustup2 2020-06-30 15:40:22 +02:00
Azhng
dfecaef914 typeck: adding type information to projection
This commit modifies the Place as follow:
* remove 'ty' from ProjectionKind
* add type information into to Projection
* replace 'ty' in Place with 'base_ty'
* introduce 'ty()' in `Place` to return the final type of the `Place`
* introduce `ty_before_projection()` in `Place` to return the type of
  a `Place` before i'th projection is applied

Closes https://github.com/rust-lang/project-rfc-2229/issues/5
2020-06-29 16:46:52 -04:00
bors
81810fa8f4 Auto merge of #73756 - Manishearth:rollup-aehswb2, r=Manishearth
Rollup of 13 pull requests

Successful merges:

 - #72620 (Omit DW_AT_linkage_name when it is the same as DW_AT_name)
 - #72967 (Don't move cursor in search box when using arrows to navigate results)
 - #73102 (proc_macro: Stop flattening groups with dummy spans)
 - #73297 (Support configurable deny-warnings for all in-tree crates.)
 - #73507 (Cleanup MinGW LLVM linkage workaround)
 - #73588 (Fix handling of reserved registers for ARM inline asm)
 - #73597 (Record span of `const` kw in GenericParamKind)
 - #73629 (Make AssocOp Copy)
 - #73681 (Update Chalk to 0.14)
 - #73707 (Fix links in `SliceIndex` documentation)
 - #73719 (emitter: column width defaults to 140)
 - #73729 (disable collectionbenches for android)
 - #73748 (Add code block to code in documentation of `List::rebase_onto`)

Failed merges:

r? @ghost
2020-06-26 10:11:43 +00:00
Manish Goregaokar
a671ea4d3f Rollup merge of #73597 - ayazhafiz:i/const-span, r=ecstatic-morse
Record span of `const` kw in GenericParamKind

Context: this is needed for a fix of https://github.com/rust-lang/rustfmt/issues/4263,
which currently records the span of a const generic param incorrectly
because the location of the `const` kw is not known.

I am not sure how to add tests for this; any guidance in how to do so
would be appreciated 🙂
2020-06-26 00:39:08 -07:00
Eduard-Mihai Burtescu
f5ce0e5fe9 rustc_lint: only query typeck_tables_of when a lint needs it. 2020-06-26 02:56:23 +03:00
Carol (Nichols || Goulding)
fa0f1d3e53
Change a noun to a verb to make the sentence complete 2020-06-25 11:25:21 -04:00
bors
46d33043d5 Auto merge of #5701 - ebroto:4874_cmp_owned_fp, r=flip1995
cmp_owned: handle when PartialEq is not implemented symmetrically

changelog: Handle asymmetrical implementations of PartialEq in [`cmp_owned`].

Fixes #4874
2020-06-24 12:48:24 +00:00
bors
a14eab389f Auto merge of #5745 - montrivo:copy_on_clone, r=phansch
clone_on_copy - add machine applicability

Fix #4826.
Change the applicability of the lint clone_on_copy. Split a test file and run rustfix on the clone_on_copy part.

changelog: clone_on_copy - add machine applicability
2020-06-24 07:11:07 +00:00
Tim Nielens
6bf5434e19 copy_on_clone - add machine applicability 2020-06-24 01:01:44 +02:00
Eduardo Broto
b498e1d715 cmp_owned: reverse operands if necessary 2020-06-23 22:14:45 +02:00
Eduardo Broto
5987c7d404 cmp_owned: avoid FP when PartialEq is not implemented symmetrically 2020-06-23 22:14:45 +02:00
Ayaz Hafiz
7c1b3aa0dd Record span of const kw in GenericParamKind
Context: this is needed to fix https://github.com/rust-lang/rustfmt/issues/4263,
which currently records the span of a const generic param incorrectly
because the location of the `const` kw is not known.

I am not sure how to add tests for this; any guidance in how to do so
would be appreciated 🙂
2020-06-23 09:25:46 -07:00
bors
583d644934 Auto merge of #5694 - wangtheo:issue-5626, r=matthiaskrgr
#5626: lint iterator.map(|x| x)

changelog: adds a new lint for iterator.map(|x| x) (see https://github.com/rust-lang/rust-clippy/issues/5626)

The code also lints for result.map(|x| x) and option.map(|x| x). Also, I'm not sure if I'm checking for type adjustments correctly and I can't think of an example where .map(|x| x) would apply type adjustments.
2020-06-23 15:59:27 +00:00
Teddy_Wang
fb4f9a0ad7 Fix pattern match of ExprKind::MethodCall 2020-06-23 11:40:38 -04:00
flip1995
80bcbf521c Merge commit 'c2c07fa9d095931eb5684a42942a7b573a0c5238' into clippyup 2020-06-23 17:05:22 +02:00
bors
c2c07fa9d0 Auto merge of #5740 - lzutao:unused-unused, r=flip1995
Remove unused allowed unused attributes

changelog: none
2020-06-23 14:34:18 +00:00
bors
c420382ac2 Auto merge of #5738 - mikerite:loops-20200623-2, r=matthiaskrgr
Improve end of expression check in for loop lints

changelog: none
2020-06-23 14:05:45 +00:00
Lzu Tao
7374185b36 Remove unused allowed unused attributes 2020-06-23 20:59:35 +07:00
Philipp Krones
e4cbd1df4e
Rollup merge of #5726 - sozysozbot:patch-1, r=flip1995
Fix typo

changelog: extending it's lifetime -> extending its lifetime
2020-06-23 14:39:50 +02:00
Philipp Krones
f562117788
Rollup merge of #5724 - ebroto:5697_const_result_option, r=Manishearth
redundant_pattern_matching: avoid non-`const fn` calls in const contexts

changelog: Avoid suggesting non-`const fn` calls in const contexts in [`redundant_pattern_matching`]

Fixes #5697
2020-06-23 14:39:49 +02:00
Philipp Krones
68c0b24e23
Rollup merge of #5716 - bugadani:patch-1, r=matthiaskrgr
Fix typo in wildcard_imports

changelog: none
2020-06-23 14:39:48 +02:00
Philipp Krones
598a79f309
Rollup merge of #5713 - flip1995:more_lints, r=Manishearth
Use lints in Clippy that are enabled in rustc bootstrap

cc https://github.com/rust-lang/rust/pull/73297#discussion_r439747061

changelog: none
2020-06-23 14:39:47 +02:00
Philipp Krones
0799be7156
Rollup merge of #5712 - ijijn:master, r=flip1995
Remove `bar` from blacklisted names

changelog: Remove `bar` from blacklisted names
fixes #5225
2020-06-23 14:39:45 +02:00
Philipp Krones
24b77ea72f
Rollup merge of #5710 - lcnr:patch-1, r=flip1995
typo

changelog: none
2020-06-23 14:39:44 +02:00
Philipp Krones
9505919be5
Rollup merge of #5709 - ebroto:5389_ice, r=Manishearth
Fix ICE in consts::binop

changelog: Fix ICE in `consts::binop`

Fixes #5389
2020-06-23 14:39:43 +02:00
Philipp Krones
1f39eeb06d
Rollup merge of #5705 - dtolnay:orpat, r=flip1995
Downgrade unnested_or_patterns to pedantic

Even with #5704 fixed, I don't believe it is a safe bet that if someone is using or-patterns anywhere in a codebase then they want to use it as much as possible in the whole codebase. I think it would be reasonable to reevaluate after the feature is stable. I feel that a warn-by-default lint suggesting use of an unstable feature, even if already being used in one place, is questionable.

changelog: Remove unnested_or_patterns from default set of enabled lints
2020-06-23 14:39:42 +02:00
flip1995
b886c06c1a
Fix fallout 2020-06-23 14:05:53 +02:00
flip1995
ed083cc959
Use lints in Clippy that are enabled in rustc bootstrap 2020-06-23 14:05:52 +02:00
bors
4cc2fa933b Auto merge of #5739 - flip1995:rustup, r=flip1995
Rustup

changelog: none

r? @ghost
2020-06-23 12:04:08 +00:00
Michael Wright
52c4864757 Improve end of expression check in for loop lints
The code should to check that the current expression _is_ the end
expression; not that it's equal to it. The equality check seems very
wasteful in terms of performance.
2020-06-23 07:51:51 +02:00
bors
c56c7e2d02 Auto merge of #5695 - esamudera:lint_mem_uninitialized, r=phansch,oli-obk
New lint: suggest `ptr::read` instead of `mem::replace(..., uninitialized())`

resolves: #5575

changelog: improvements to `MEM_REPLACE_WITH_UNINIT`:
- add a new test case in `tests/ui/repl_uninit.rs` to cover the case of replacing with `mem::MaybeUninit::uninit().assume_init()`.
- modify the existing `MEM_REPLACE_WITH_UNINIT` when replacing with `mem::uninitialized` to suggest using `ptr::read` instead.
- lint with `MEM_REPLACE_WITH_UNINIT` when replacing with `mem::MaybeUninit::uninit().assume_init()`
2020-06-23 05:14:21 +00:00
flip1995
51592f8587
Fix sync fallout 2020-06-23 02:23:27 +02:00
flip1995
018440c11e
Merge remote-tracking branch 'upstream/master' into rustup 2020-06-23 02:18:17 +02:00
Ralf Jung
b92602ba69 Make is_freeze and is_copy_modulo_regions take TyCtxtAt 2020-06-21 11:47:19 +02:00
Aman Arora
922ff8e485 Refactor hir::Place
For the following code
```rust
let c = || bar(foo.x, foo.x)
```

We generate two different `hir::Place`s for both `foo.x`.
Handling this adds overhead for analysis we need to do for RFC 2229.

We also want to store type information at each Projection to support
analysis as part of the RFC. This resembles what we have for
`mir::Place`

This commit modifies the Place as follows:
- Rename to `PlaceWithHirId`, where there `hir_id` is that of the
expressioin.
- Move any other information that describes the access out to another
struct now called `Place`.
- Removed `Span`, it can be accessed using the [hir
API](https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/hir/map/struct.Map.html#method.span)
- Modify `Projection` to be a strucutre of its own, that currently only
contains the `ProjectionKind`.

Adding type information to projections wil be completed as part of https://github.com/rust-lang/project-rfc-2229/issues/5

Closes https://github.com/rust-lang/project-rfc-2229/issues/3

Co-authored-by: Aman Arora <me@aman-arora.com>
Co-authored-by: Roxane Fruytier <roxane.fruytier@hotmail.com>
2020-06-18 18:59:38 -04:00
sozysozbot
f3a40f5eb1
Fix typo
extending it's lifetime -> extending its lifetime
2020-06-18 06:50:04 +09:00
Eduardo Broto
a7743e9084 redundant_pattern_matching: avoid non-const fn in const context 2020-06-17 00:32:47 +02:00
Ericko Samudera
8c1ee063bb mem_replace_with_uninit: suggest std::ptr::read 2020-06-17 01:26:37 +07:00
Ralf Jung
93696f45ff Rollup merge of #72938 - lzutao:stabilize_option_zip, r=dtolnay
Stabilize Option::zip

This PR stabilizes the following API:

```rust
impl<T> Option<T> {
    pub fn zip<U>(self, other: Option<U>) -> Option<(T, U)>;
}
```

This API has real world usage as seen in <https://grep.app/search?q=-%3E%20Option%3C%5C%28T%2C%5Cs%3FU%5C%29%3E&regexp=true&filter[lang][0]=Rust>.

The `zip_with` method is left unstably as this API is kinda niche
and it hasn't received much usage in Rust repositories on GitHub.

cc #70086
2020-06-15 12:01:03 +02:00
bors
9217ef2018 Auto merge of #72080 - matthewjasper:uniform-impl-trait, r=nikomatsakis
Clean up type alias impl trait implementation

- Removes special case for top-level impl trait
- Removes associated opaque types
- Forbid lifetime elision in let position impl trait. This is consistent with the behavior for inferred types.
- Handle lifetimes in type alias impl trait more uniformly with other parameters

cc #69323
cc #63063
Closes #57188
Closes #62988
Closes #69136
Closes #73061
2020-06-15 04:10:24 +00:00
Dániel Buga
8a6f42a970
Fix typo in wildcard_imports 2020-06-14 11:07:44 +02:00
Iain Brandram-Adams
454ed47acf Update comment in conf.rs 2020-06-14 12:46:56 +12:00
Teddy_Wang
40ee620e51 Added a lint for .map(|x| x) 2020-06-13 10:08:12 -04:00
Iain Brandram-Adams
f663a21c8f Remove bar from blacklisted names 2020-06-14 01:24:36 +12:00
Bastian Kauschke
dee794f450
typo 2020-06-13 12:42:58 +02:00
Lzu Tao
994a839622 Stabilize Option::zip 2020-06-13 01:27:18 +00:00
Eduardo Broto
b21ef2b365 Fix ICE in consts::binop 2020-06-13 00:52:32 +02:00
Dylan DPC
7c15f30701 Rollup merge of #72906 - lzutao:migrate-numeric-assoc-consts, r=dtolnay
Migrate to numeric associated consts

The deprecation PR is #72885

cc #68490
cc rust-lang/rfcs#2700
2020-06-12 12:28:23 +02:00
Matthew Jasper
af9b09235c Remove ImplItemKind::OpaqueTy from clippy 2020-06-11 16:24:01 +01:00
Matthew Jasper
857ea16feb Remove associated opaque types
They're unused now.
2020-06-11 16:24:01 +01:00
David Tolnay
56f25e3e62
Downgrade unnested_or_patterns to pedantic 2020-06-10 19:29:11 -07:00
Aaron Hill
e2e2a0fa83 Clippy fixes 2020-06-10 17:30:12 -04:00
Aaron Hill
6b3ee8f600 Update Clippy for MethodCall changes 2020-06-10 17:30:11 -04:00
Lzu Tao
c9bd35cac3 Migrate to numeric associated consts 2020-06-10 01:35:47 +00:00
Eduardo Broto
2f74283fce Add a comment linking to the issue 2020-06-10 00:14:02 +02:00
Eduardo Broto
a083b84b78 if_same_then_else: don't assume multiplication is always commutative 2020-06-09 23:49:21 +02:00
Devin R
e521a4ed38 Add enough attrs to the test file so the fix compiles with no errors, fmt/clippy 2020-06-09 16:39:31 -04:00
Lzu Tao
8db24840f7 Merge commit 'ff0993c5e9162ddaea78e83d0f0161e68bd4ea73' into clippy 2020-06-09 14:36:01 +00:00
Devin R
288df59b25 Fix suggestion output, add run-rustfix to test file, stop sorting import segments duh 2020-06-08 16:00:33 -04:00
Devin R
8c5a5a92ec cleaned up import suggestion formatter, look into code reuse with wildcard impotrs 2020-06-08 16:00:33 -04:00
Devin R
d4f60b5ff4 wip: of handling nested import paths for multi-macro paths 2020-06-08 16:00:33 -04:00
Devin R
451363dc59 still working on displaying nested imports 2020-06-08 16:00:33 -04:00
Devin R
8bc106b29d fix some of the review, rename, fmt, refactor 2020-06-08 16:00:33 -04:00
Devin R
1d9e80ad7b remove session 2020-06-08 16:00:33 -04:00
Devin R
8ffbf6f94d use hashset not map for keeping track of seen macro refs
remove stdout, fix clippy warnings, fmtcar
2020-06-08 16:00:33 -04:00
Devin R
ede366be63 collected all the imports and names
how to compare macro to import path

add more imports to test
2020-06-08 16:00:30 -04:00
Devin R
a4b8bb88f2 warn on macro_use attr
cargo dev update lints

use if_chain

clean up alot, span_lint_and_sugg

find imported macros for sugg
2020-06-08 15:59:41 -04:00
bors
ff0993c5e9 Auto merge of #5692 - ebroto:5689_N_dotdot_N, r=yaahc
reversed_empty_ranges: avoid linting N..N except in for loop arguments

changelog: [`reversed_empty_ranges`]: avoid linting N..N except in for loop arguments

r? @yaahc
Fixes #5689
2020-06-08 17:15:45 +00:00
bors
f947644f0d Auto merge of #5680 - ebroto:3792_let_return, r=Manishearth
let_and_return: avoid "does not live long enough" errors

EDIT: Add #3324 to the list of fixes

<details>
<summary>Description of old impl</summary>
<br>
Avoid suggesting turning the RHS expression of the last statement into the block tail expression if a temporary borrows from a local that would be destroyed before.

This is my first incursion into MIR so there's probably room for improvement!
</details>

Avoid linting if the return type of some method or function called in the last statement has a lifetime parameter.

changelog: Fix false positive in [`let_and_return`]

Fixes #3792
Fixes #3324
2020-06-08 16:47:22 +00:00
flip1995
a9ca832b11
Fix rebase fallout 2020-06-07 21:37:55 +02:00
flip1995
ecabed67ec
Apply self-review by Centril 2020-06-07 21:16:05 +02:00
Mazdak Farrokhzad
78f158e80e
dogfood unnested_or_patterns 2020-06-07 21:16:03 +02:00
Eduardo Broto
a664ce7789 Remove unnecessary lifetime parameter 2020-06-07 21:13:13 +02:00
Mazdak Farrokhzad
7b6dc7b33d
add unnested_or_patterns lint 2020-06-07 21:09:47 +02:00
Eduardo Broto
ebfc1da07d reversed_empty_ranges: don't lint N..N except in for loop arg 2020-06-07 21:03:08 +02:00
Eduardo Broto
dac8a3c1ca let_and_return: do not lint if last statement borrows 2020-06-07 20:53:38 +02:00
Eduardo Broto
dc13016ac2 Make let_and_return a late lint pass 2020-06-07 20:53:38 +02:00
flip1995
1a8a69d012
Merge remote-tracking branch 'upstream/master' into rustup 2020-06-07 02:17:49 +02:00
Ralf Jung
161474b7f7 Rollup merge of #72508 - ecstatic-morse:poly-self-ty, r=nikomatsakis
Make `PolyTraitRef::self_ty` return `Binder<Ty>`

This came up during review of #71618. The current implementation is the same as a call to `skip_binder` but harder to audit. Make it preserve binding levels and add a call to `skip_binder` at all use sites so they can be audited as part of #72507.
2020-06-06 21:57:38 +02:00
Philipp Hansch
623faac84e
Cleanup: Use rustc's same_types instead of our same_tys 2020-06-06 11:50:59 +02:00
bors
b059c0a2e6 Auto merge of #72927 - petrochenkov:rustc, r=Mark-Simulacrum
Rename all remaining compiler crates to use the `rustc_foo` pattern

libarena -> librustc_arena
libfmt_macros -> librustc_parse_format
libgraphviz -> librustc_graphviz
libserialize -> librustc_serialize

Closes https://github.com/rust-lang/rust/issues/71177 in particular.
2020-06-06 09:00:51 +00:00
Eduardo Broto
413713c884 Add error info when cargo metadata fails to run 2020-06-05 22:28:58 +02:00
Matthias Krüger
7654125d27 match_wildcard_for_single_variants: remove empty line at start of lint example.
See https://rust-lang.github.io/rust-clippy/master/index.html#match_wildcard_for_single_variants

changelog: none
2020-06-04 03:34:22 +02:00
Mark Rousskov
0c470b3339 Bump to 1.46 2020-06-03 15:27:51 -04:00
Lzu Tao
b39fd5f62f Fix false negative of checked_conversion lint 2020-06-03 09:04:24 +07:00
Vadim Petrochenkov
bd3fc11416 Update fulldeps tests and clippy 2020-06-03 00:18:57 +03:00
Vadim Petrochenkov
2b79413491 Rename the crates in source code 2020-06-02 20:42:54 +03:00
bors
6c833df69b Auto merge of #5678 - lzutao:slice, r=flip1995
Make use of slice pattern

changelog: none
2020-06-02 16:42:51 +00:00
Lzu Tao
fbf0b84b32 Make use of slice pattern 2020-06-02 21:42:33 +07:00
bors
5cb9ef390a Auto merge of #5664 - ThibsG:GiveCorrectedCode, r=flip1995
Give corrected code

This PR adds corrected code for doc examples.

I did this in several commits to facilitate review.
Don't hesitate to tell me if I forgot some.
Also, sometimes I felt it was not necessary to give corrected code, but I maybe wrong.

fixes: #4829

changelog: Improve documentation examples across multiple lints.
2020-06-02 12:11:28 +00:00
bors
f760d77bdb Auto merge of #5597 - esamudera:slice_iter_next, r=flip1995
New lint: iter_next_slice

Hello, this is a work-in-progress PR for issue: https://github.com/rust-lang/rust-clippy/issues/5572

I have implemented lint to replace `iter().next()` for `slice[index..]` and `array` with `get(index)` and `get(0)` respectively. However since I made a lot of changes, I would like to request some feedback before continuing so that I could fix mistakes.

Thank you!

---

changelog: implement `iter_next_slice` lint and test, and modify `needless_continues`, `for_loop_over_options_result` UI tests since they have `iter().next()`
2020-06-02 11:42:22 +00:00
Dylan MacKenzie
ea06c72fdd Call skip_binder or no_bound_vars before self_ty 2020-06-01 12:18:57 -07:00
bors
bfafb8e0d6 Auto merge of #5673 - phansch:endless-loop, r=Manishearth
Add regression test for endless loop / update `pulldown_cmark`

Closes #4917

This was fixed in pulldown_cmark 0.7.1, specifically raphlinus/pulldown-cmark#438

changelog: none
2020-06-01 17:16:06 +00:00
ThibsG
137a3b4d32 Corrected doc PR fixes 2020-06-01 10:49:48 +02:00
ThibsG
9893254dff Add more corrected code for doc 2020-06-01 10:39:52 +02:00
ThibsG
19339334cb Give more corrected code examples in doc 2020-06-01 10:39:52 +02:00
ThibsG
262c9dc025 Fix more code examples 2020-06-01 10:39:52 +02:00
ThibsG
61587c9a29 Fix some code examples in doc 2020-06-01 10:39:52 +02:00
Philipp Hansch
861b897c54
Add regression test for endless loop
This was fixed in pulldown_cmark 0.7.1, specifically
https://github.com/raphlinus/pulldown-cmark/pull/438
2020-06-01 10:20:17 +02:00
JarredAllen
b89880a30c Ran update_lints 2020-05-31 15:19:31 -07:00
JarredAllen
9a5baed482 Implement suggestions from phansch 2020-05-31 15:09:12 -07:00
Ericko Samudera
32fde0b511 New lint: iter_next_slice 2020-06-01 03:08:51 +07:00
JarredAllen
20cb512e81 Updated test cases and formatted 2020-05-31 12:06:32 -07:00
JarredAllen
015ab9f925 Renamed to 2020-05-31 11:55:45 -07:00
JarredAllen
07886a9764 Detect also when works 2020-05-31 11:55:45 -07:00
JarredAllen
059e8edd15 Detect also a non-reversed comparison 2020-05-31 11:55:45 -07:00
JarredAllen
955a25ee7d Added negative test cases and ran cargo dev fmt 2020-05-31 11:55:45 -07:00
JarredAllen
943cb94dce Passes all tests now! 2020-05-31 11:55:45 -07:00
JarredAllen
8590ab4d46 More progress towards sort_by_key_reverse lint 2020-05-31 11:55:45 -07:00
JarredAllen
24847ea53e Attempted start at sort_by_key_reverse lint 2020-05-31 11:55:45 -07:00
JarredAllen
7e843515d9 Created lint 2020-05-31 11:55:45 -07:00
bors
9fdcb13edb Auto merge of #4455 - flip1995:unit_arg_appl, r=phansch
Rework suggestion generation of `unit_arg` lint

Found this bug while running `cargo fix --clippy` on quite a big codebase:

This would replace something like:
```rust
Some(fn_that_actually_does_something(&a, b))
```
with
```rust
Some(())
```
which obviously suppresses side effects.

Since pretty much every expression could have side effects, I think making this suggestion `MaybeIncorrect` is the best thing to do here.

A correct suggestion would be:

```rust
fn_that_actually_does_something(&a, b);
Some(())
```

Somehow the suggestion is not correctly applied to the arguments, when more than one argument is a unit value. I have to look into this a little more, though.

changelog: Fixes suggestion of `unit_arg` lint, so that it suggests semantic equivalent code

Fixes #4741
2020-05-31 18:01:40 +00:00
flip1995
a9cde3a804
Don't suggest to move empty blocks 2020-05-31 19:29:03 +02:00
flip1995
4c9cefa122
Move linting out in its own function 2020-05-31 18:50:33 +02:00
flip1995
f9c325f5b6
Suggest to remove the semicolon of the last stmt in a block 2020-05-31 18:50:33 +02:00
flip1995
0f69cafc2d
Rework suggestion generation and use multipart_suggestion again 2020-05-31 18:50:31 +02:00
flip1995
a1a1a4b82a
Use multiple span_suggestions instead of multipart_suggestion
multipart suggestions aren't autofixable by rustfix yet
2020-05-31 18:48:29 +02:00
flip1995
0ab823c509
Rework suggestion generation of unit_arg lint 2020-05-31 18:47:48 +02:00
Michael Wright
6122612232 Increase cargo_metadata version to 0.9.1
`clippy_lints` makes use of `dep_kinds` on `NodeDep` but this was only
added in versoin 0.9.1. Compiling with 0.9.0 will fail because of this.
2020-05-31 17:38:59 +02:00
bors
8aa8f42556 Auto merge of #5667 - djugei:master, r=flip1995
moved cast_ptr_alignment to pedantic and expanded documentation

fixes: #5618
changelog: cast_ptr_alignment moved to pedantic
2020-05-31 14:26:03 +00:00
djugei
18b5ceed79
ran update_lints 2020-05-31 16:00:29 +02:00
djugei
0bcfae92f8
moved cast_ptr_alignment to pedantic and expanded documentation 2020-05-31 15:41:33 +02:00
Philipp Krones
873c9fc8f2
Rollup merge of #5656 - ebroto:len_zero_ranges, r=matthiaskrgr
len_zero: skip ranges if feature `range_is_empty` is not enabled

If the feature is not enabled, calling `is_empty()` on a range is ambiguous. Moreover, the two possible resolutions are unstable methods, one inherent to the range and the other being part of the `ExactSizeIterator` trait.

Since `len_zero` only checks for existing `is_empty()` inherent methods, we only take into account the `range_is_empty` feature.

Related: https://github.com/rust-lang/rust/issues/48111#issuecomment-445132965

changelog: len_zero: avoid linting ranges without #![feature(range_is_empty)]

Fixes: #3807
2020-05-31 14:57:33 +02:00
Philipp Krones
0fff522071
Rollup merge of #5637 - montrivo:feature/vec_resize_to_zero, r=yaahc,flip1995
new lint: vec_resize_to_zero

implements #5444

changelog: new lint vec_resize_to_zero
2020-05-31 14:57:32 +02:00
flip1995
37381d33a4
Fix sync fallout 2020-05-31 14:05:57 +02:00
Tim Nielens
5faab874f9 new lint: vec_resize_to_zero 2020-05-30 17:52:10 +02:00
Yuki Okushi
9fd8e1088f Return early to avoid ICE 2020-05-30 18:48:54 +09:00
flip1995
a0e9f9bd0d Merge commit '7ea7cd165ad6705603852771bf82cc2fd6560db5' into clippyup2 2020-05-28 15:45:24 +02:00
Eduardo Broto
64a05f56c3 len_zero: skip ranges if feature range_is_empty is not enabled 2020-05-28 00:58:48 +02:00
bors
ee3088f27b Auto merge of #5631 - ThibsG:ExtendUselessConversion, r=matthiaskrgr
Extend useless conversion

This PR extends `useless_conversion` lint with `TryFrom` and `TryInto`

fixes: #5344

changelog: Extend `useless_conversion` with `TryFrom` and `TryInto`
2020-05-27 13:06:59 +00:00
Eduardo Broto
4161823475 Avoid triggering similar names on code from expansion 2020-05-27 00:06:50 +02:00
flip1995
04db13eb56 Fix fallout in similar_names 2020-05-26 21:41:51 +02:00
flip1995
8e22d15055 Fix fallout in redundant_field_names 2020-05-26 21:41:51 +02:00
flip1995
7fd3bd0f57 Register redundant_field_names and non_expressive_names as early passes 2020-05-26 21:41:51 +02:00
ThibsG
1801841ae5 Add test cases for broader coverage 2020-05-26 18:43:12 +02:00
bors
291385b3e0 Auto merge of #5609 - phansch:empty-line-after-outer-attr-fix, r=flip1995
Make empty_line_after_outer_attr an early lint

Fixes #5567

Unfortunately I couldn't find a way to reproduce the issue without syn/quote. Considering that most real-world macros use syn and/or quote, I think it's okay to pull them in anyway.

changelog: Fix false positive in [`empty_line_after_outer_attr`]
2020-05-26 15:10:35 +00:00
Philipp Hansch
fd86b3150e
Be less specific about quote and syn versions 2020-05-26 16:52:02 +02:00
Philipp Hansch
cdff59e156
Using dev-dependencies doesn't seem to work w/ compiletest 2020-05-26 16:52:02 +02:00
Philipp Hansch
e3f6a8fc20
Specify quote and syn versions 2020-05-26 16:52:02 +02:00
Philipp Hansch
67167be167
Make empty_line_after_outer_attr an early lint 2020-05-26 16:52:02 +02:00
bors
a00025ab21 Auto merge of #5638 - ebroto:issue_5628_add_suggestion_for_reversed_empty_ranges, r=phansch
reversed_empty_ranges: add suggestion for &slice[N..N]

As discussed in the issue thread, the user accepted this solution. Let me know if this is what we want, or if changing the way we lint the N..N case is prefered.

changelog: reversed_empty_ranges: add suggestion for &slice[N..N]

Closes #5628
2020-05-26 11:56:16 +00:00
bors
182ac89f16 Auto merge of #5636 - ebroto:issue_5041, r=phansch
multiple_crate_versions: skip dev and build deps

changelog: multiple_crate_versions: skip dev and build deps

Closes #5041
2020-05-26 06:23:58 +00:00
bors
2a6cfa7f05 Auto merge of #5647 - ebroto:5644_allow_ptr_arg_in_arg_position, r=flip1995
ptr_arg: honor `allow` attribute on arguments

The `intravisit::Visitor` impl for `LateContextAndPass` only takes into account the attributes of a function parameter inside the `check_param` method. `ptr_arg` starts its heuristics at `check_item` / `check_impl_item` / `check_trait_item`, so the `allow` is not taken into account automatically.

changelog: ptr_arg: honor `allow` attribute on arguments

Fixes #5644
2020-05-25 21:47:07 +00:00
Eduardo Broto
a1824e187c ptr_arg: honor allow attr on arguments 2020-05-25 23:09:06 +02:00
Jeremy Stucki
bcfeb4de15
Fix build 2020-05-25 21:41:20 +02:00
Jeremy Stucki
566377f627
Ignore calls to 'len' 2020-05-25 21:41:20 +02:00
Eduardo Broto
60d38ee1dd reversed_empty_ranges: add suggestion for &slice[N..N] 2020-05-25 20:06:15 +02:00
ThibsG
705bfdcc46 Extend useless_conversion lint with TryInto 2020-05-25 20:00:39 +02:00
ThibsG
4f8909fad9 Extend useless_conversion lint with TryFrom 2020-05-25 20:00:39 +02:00
Eduardo Broto
ec0a00e539 Use find_map instead of find() + map() 2020-05-25 20:00:08 +02:00
Eduardo Broto
8642fc97dd multiple_crate_versions: skip dev and build deps 2020-05-25 20:00:08 +02:00
bors
c41916d9bd Auto merge of #5616 - euclio:no-derive-suggestion, r=phansch,flip1995
new_without_default: do not suggest deriving

---

changelog: do not suggest deriving `Default` in `new_without_default`

This commit changes the behavior of the `new_without_default` lint to not suggest deriving `Default`. This suggestion is misleading if the `new` implementation does something different than what a derived `Default` implementation would do, because then the two methods would not be equivalent.

Instead, the `can_derive_default` check is removed, and we always suggest implementing `Default` in terms of `new()`.
2020-05-25 17:19:00 +00:00
bors
7ca335a97d Auto merge of #5639 - nickrtorres:unnecessary-mut-passed-doc-cleanup, r=phansch
Clarify the documentation of the `unnecessary_mut_passed` lint

fixes #5433 by replacing "giving" with "passing"

changelog: Clarifies documentation for `unnecessary_mut_passed`
2020-05-25 17:02:12 +00:00
bors
f162dc3ea0 Auto merge of #5646 - flip1995:rustup, r=matthiaskrgr
Rustup

r? @phansch

changelog: none
2020-05-25 16:42:50 +00:00
Nick Torres
a709559705 Clarify the documentation of the unnecessary_mut_passed lint 2020-05-23 16:15:30 -07:00
Bastian Kauschke
e820a03d1c iterate List by value 2020-05-23 12:24:19 +02:00
Dylan MacKenzie
b3a690f5a1 Use OnceCell instead of Once 2020-05-22 13:31:02 -07:00
Andy Russell
a578bed69a
new_without_default: do not suggest deriving 2020-05-22 11:49:51 -04:00
bors
ce86f907ef Auto merge of #5632 - flip1995:rustup, r=phansch
Rustup

changelog: none
2020-05-22 13:00:38 +00:00
flip1995
6b3cf63bf5
Fix dogfood fallout 2020-05-22 14:45:51 +02:00
Eduardo Broto
7a0eccbd8a Add test for multiple_crate_versions
Make the output of the lint deterministic by sorting the versions
2020-05-21 14:11:11 +02:00
Eduardo Broto
bc93f7052e Add test for cargo_common_metadata
Fix missing `authors` entry in the provided example
2020-05-21 14:11:11 +02:00
bors
1831385ff0 Auto merge of #5611 - rrbutani:master, r=flip1995
Add to the list of words clippy::doc_markdown ignores

"TypeScript" is the only one of these I actually ran into organically; I can remove the others if they're too much.

changelog: Add to the list of words `clippy::doc_markdown` ignores
2020-05-20 14:15:12 +00:00
Bastian Kauschke
091239ee60 introduce newtype'd Predicate<'tcx> 2020-05-20 15:44:34 +02:00
Elichai Turkel
ecd0a67b01
Make match_wild_err_arm pedantic, and update help messages 2020-05-20 16:39:03 +03:00
Bastian Kauschke
2722522fac rename Predicate to PredicateKind, introduce alias 2020-05-20 15:38:03 +02:00
bors
cafa94662c Auto merge of #5582 - vtmargaryan:match_wildcard_for_single_variants, r=flip1995
New lint: `match_wildcard_for_single_variants`

changelog: Added a new lint match_wildcard_for_single_variants to warn on enum matches where a wildcard is used to match a single variant

Closes #5556
2020-05-20 12:51:28 +00:00
flip1995
f28f1f15da
Fix dogfood fallout 2020-05-20 13:32:53 +02:00
Amanieu d'Antras
d25b25610b Handle InlineAsm in clippy 2020-05-18 14:41:33 +01:00
Rahul Butani
1b3dc5f79b
Add to the list of words clippy::doc_markdown ignores 2020-05-17 22:21:02 -05:00
flip1995
f1d3086492 Merge commit 'e214ea82ad0a751563acf67e1cd9279cf302db3a' into clippyup 2020-05-17 17:36:26 +02:00
bors
e214ea82ad Auto merge of #5568 - ThibsG:RenameIdentityConversionLint, r=flip1995
Rename lint `identity_conversion` to `useless_conversion`

Lint name `identity_conversion` was misleading, so this PR renames it to `useless_conversion`.

As decision has not really came up in the issue comments, this PR will probably need discussion.

fixes #3106

changelog: Rename lint `identity_conversion` to `useless_conversion`
2020-05-17 11:29:04 +00:00
bors
6ae0643d1a Auto merge of #5529 - alex-700:improve-option-and-then-some-lint, r=phansch
Improve `option_and_then_some` lint

fixed #5492

changelog: Improve and generalize `option_and_then_some` and rename it to `bind_instead_of_map`.
2020-05-17 10:58:56 +00:00
Aleksei Latyshev
07f1edf2d4
improve and generalize option_and_then_some lint
- rename it to bind_instead_of_map
2020-05-17 12:17:03 +03:00
flip1995
cb0d40a7ec
Merge remote-tracking branch 'upstream/master' into rustup 2020-05-17 01:13:02 +02:00
Aleksei Latyshev
cb7f9679a6
simplify multispan_sugg interface
- add `multispan_sugg_with_applicability`
- not it gets `&str` instead of `String`, like in `diag.multispan_suggestion`
2020-05-17 00:09:37 +03:00
ThibsG
e55b920970 Rename lint identity_conversion to useless_conversion 2020-05-16 22:50:20 +02:00
bors
cfd720d506 Auto merge of #5563 - ThibsG:MergeLints, r=flip1995
Merge some lints together

This PR merges following lints:

- `block_in_if_condition_expr` and `block_in_if_condition_stmt` → `blocks_in_if_conditions`
- `option_map_unwrap_or`, `option_map_unwrap_or_else` and `result_map_unwrap_or_else` → `map_unwrap`
- `option_unwrap_used` and `result_unwrap_used` → `unwrap_used`
- `option_expect_used` and `result_expect_used` → `expect_used`
- `wrong_pub_self_convention` into `wrong_self_convention`
- `for_loop_over_option` and `for_loop_over_result` → `for_loops_over_fallibles`

Lints that have already been merged since the issue was created:
- [x] `new_without_default` and `new_without_default_derive` → `new_without_default`

Need more discussion:
- `string_add` and `string_add_assign`: do we agree to merge them or not? Is there something more to do? → **not merge finally**
- `identity_op` and `modulo_one` → `useless_arithmetic`: seems outdated, since `modulo_arithmetic` has been created.

fixes #1078

changelog: Merging some lints together:
- `block_in_if_condition_expr` and `block_in_if_condition_stmt` → `blocks_in_if_conditions`
- `option_map_unwrap_or`, `option_map_unwrap_or_else` and `result_map_unwrap_or_else` → `map_unwrap_or`
- `option_unwrap_used` and `result_unwrap_used` → `unwrap_used`
- `option_expect_used` and `result_expect_used` → `expect_used`
- `for_loop_over_option` and `for_loop_over_result` → `for_loops_over_fallibles`
2020-05-16 20:17:11 +00:00
Ralf Jung
8bba1b7589 Rollup merge of #72047 - Julian-Wollersberger:literal_error_reporting_cleanup, r=petrochenkov
Literal error reporting cleanup

While doing some performance work, I noticed some code duplication in `librustc_parser/lexer/mod.rs`, so I cleaned it up.

This PR is probably best reviewed commit by commit.

I'm not sure what the API stability practices for `librustc_lexer` are. Four public methods in `unescape.rs` can be removed, but two are used by clippy, so I left them in for now.
I could open a PR for Rust-Analyzer when this one lands.

But how do I open a PR for clippy? (Git submodules are frustrating to work with)
2020-05-16 19:46:31 +02:00
bors
0c9427309c Auto merge of #5596 - ebroto:issue_5212, r=phansch
Fix comparison_chain false positive

changelog: comparison_chain: fix false positives when the binary operation is the same.

Fixes #5212
2020-05-16 08:49:15 +00:00
bors
53a98050b8 Auto merge of #5602 - ebroto:issue_3430, r=phansch
identity_op: allow `1 << 0`

I went for accepting `1 << 0` verbatim instead of something more general as it seems to be what everyone in the issue thread needed.

changelog: identity_op: allow `1 << 0` as it's a common pattern in bit manipulation code.

Fixes #3430
2020-05-16 08:33:47 +00:00
Dylan DPC
b0490cc80d Rollup merge of #71948 - csmoe:issue-61076, r=oli-obk
Suggest to await future before ? operator

Closes https://github.com/rust-lang/rust/issues/71811
cc #61076
2020-05-16 02:37:21 +02:00
bors
cac9ad02cf Auto merge of #5599 - dtolnay:letif, r=flip1995
Downgrade useless_let_if_seq to nursery

I feel that this lint has the wrong balance of incorrect suggestions for a default-enabled lint.

The immediate code I faced was something like:

```rust
fn main() {
    let mut good = do1();
    if !do2() {
        good = false;
    }
    if good {
        println!("good");
    }
}

fn do1() -> bool { println!("1"); false }
fn do2() -> bool { println!("2"); false }
```

On this code Clippy calls it unidiomatic and suggests the following diff, which has different behavior in a way that I don't necessarily want.

```diff
- let mut good = do1();
- if !do2() {
-     good = false;
- }
+ let good = if !do2() {
+     false
+ } else {
+     do1()
+ };
```

On exploring issues filed about this lint, I have found that other users have also struggled with inappropriate suggestions (https://github.com/rust-lang/rust-clippy/issues/4124, https://github.com/rust-lang/rust-clippy/issues/3043, https://github.com/rust-lang/rust-clippy/issues/2918, https://github.com/rust-lang/rust-clippy/issues/2176) and suggestions that make the code worse (https://github.com/rust-lang/rust-clippy/issues/3769, https://github.com/rust-lang/rust-clippy/issues/2749). Overall I believe that this lint is still at nursery quality for now and should not be enabled.

---

changelog: Remove useless_let_if_seq from default set of enabled lints
2020-05-15 21:55:43 +00:00
Vardan Margaryan
2620d2449d Fix check for missing enum variants from match expressions
TupleStruct matches are checked for exhaustiveness
2020-05-16 00:06:52 +03:00
Vardan Margaryan
10313a2631 Revert "Fix cases of match_wildcard_for_single_variants lint when it is spanned on Option"
This reverts commit 4948307977.
2020-05-15 22:33:37 +03:00
Eduardo Broto
fc8ab099c3 identity_op: allow 1 << 0 2020-05-15 21:17:37 +02:00
ThibsG
ab87f87ba0 Fix CHANGELOG.md and lint names plural 2020-05-15 18:27:11 +02:00
bors
e22ccf5332 Auto merge of #5592 - ebroto:extend_unused_unit, r=flip1995
unused_unit: lint also in type parameters and where clauses

changelog: unused_unit now also lints in type parameters and where clauses

Fixes #5585
2020-05-15 14:47:11 +00:00
csmoe
0a86335cd4 implement type_implments_trait query 2020-05-15 15:37:11 +08:00
ThibsG
93386563f6 Rename lint map_unwrap to map_unwrap_or and register lints as renamed 2020-05-15 09:17:39 +02:00
Vardan Margaryan
1c59cd5f21 Fix example code of wildcard_enum_match_arm lint 2020-05-14 22:41:05 +03:00
Vardan Margaryan
749619cfe3 Apply suggestions from PR review 2020-05-14 22:40:33 +03:00
Vardan Margaryan
4948307977 Fix cases of match_wildcard_for_single_variants lint when it is spanned on Option 2020-05-14 22:36:46 +03:00
Vardan Margaryan
0ad9f7d651 Fix trivial cases of new match_wildcard_for_single_variants lint 2020-05-14 22:36:46 +03:00
Vardan Margaryan
94e4b5ec31 Add the redundant_wildcard_enum_match lint 2020-05-14 22:36:46 +03:00
David Tolnay
95399f8f94
Downgrade useless_let_if_seq to nursery 2020-05-14 09:57:36 -07:00
ThibsG
adbdf7549c Merge for_loop_over_option and for_loop_over_result lints into for_loop_over_fallible lint 2020-05-14 16:01:07 +02:00
ThibsG
0e8be599cd Merge option_expect_used and result_expect_used lints into expect_used lint 2020-05-14 16:01:07 +02:00
ThibsG
bcf61666bd Merge option_unwrap_used and result_unwrap_used lints into unwrap_used lint 2020-05-14 16:01:07 +02:00
ThibsG
6cbdd1e49d Merge option_map_unwrap_or, option_map_unwrap_or_else and result_map_unwrap_or_else lints into map_unwrap lint 2020-05-14 15:56:17 +02:00
ThibsG
945c944709 Merge block_in_if_condition_expr and block_in_if_condition_stmt lints into block_in_if_condition lint 2020-05-14 15:56:17 +02:00
bors
e1842b0cac Auto merge of #5583 - ebroto:reversed_empty_ranges, r=yaahc,flip1995
Reversed empty ranges

This lint checks range expressions with inverted limits which result in empty ranges. This includes also the ranges used to index slices.

The lint reverse_range_loop was covering iteration of reversed ranges in a for loop, which is a subset of what this new lint covers, so it has been removed. I'm not sure if that's the best choice. It would be doable to check in the new lint that we are not in the arguments of a for loop; I went for removing it because the logic was too similar to keep them separated.

changelog: Added reversed_empty_ranges lint that checks for ranges where the limits have been inverted, resulting in empty ranges. Removed reverse_range_loop which was covering a subset of the new lint.

Closes #4192
Closes #96
2020-05-14 12:59:24 +00:00
Eduardo Broto
9217675c7f Fix comparison_chain false positive 2020-05-14 00:26:09 +02:00
Eduardo Broto
671c1e34cc Avoid running doctest that is expected to panic 2020-05-13 21:07:13 +02:00