bors [Sat, 25 Dec 2021 13:38:08 +0000 (13:38 +0000)]
Auto merge of #8167 - rust-lang:fix-8166, r=xFredNet
fix an ICE on unwrapping a None
This very likely fixes #8166 though I wasn't able to meaningfully reduce a test case. This line is the only call to `unwrap` within that function, which was the one in the stack trace that triggered the ICE, so I think we'll be OK.
`@hackmad` can you pull and build this branch and check if it indeed fixes your problem?
flip1995 [Mon, 20 Dec 2021 18:56:06 +0000 (19:56 +0100)]
Test clippy_utils in CI
This makes sure that the tests in clippy_utils are run in CI.
When looking into this I discovered that two tests were failing and
multiple doc tests were failing. This fixes those tests and enables a
few more doc tests.
bors [Mon, 20 Dec 2021 00:15:18 +0000 (00:15 +0000)]
Auto merge of #8138 - r00ster91:safety, r=giraffate
Fix `SAFETY` comment tag casing in undocumented_unsafe_blocks
This changes the lint introduced in #7748 to suggest adding a `SAFETY` comment instead of a `Safety` comment.
Searching for `// Safety:` in rust-lang/rust yields 67 results while `// SAFETY:` yields 1072.
I think it's safe to say that this comment tag is written in upper case, just like `TODO`, `FIXME` and so on are. As such I would expect this lint to follow the official convention as well.
Note that I intentionally introduced some casing diversity in `tests/ui/undocumented_unsafe_blocks.rs` to test more cases than just `Safety:`.
changelog: Capitalize `SAFETY` comment in [`undocumented_unsafe_blocks`]
bors [Fri, 17 Dec 2021 17:01:05 +0000 (17:01 +0000)]
Auto merge of #8137 - flip1995:changelog, r=Manishearth
Fix commits and formatting of CHANGELOG.md
r? `@Manishearth`
Follow up to #8136
I think the beta commit update didn't take the backport we've done into account. I fixed the commit ranges. And while I was at it, I also applied my usual formatting to the changelog entries.
bors [Wed, 15 Dec 2021 10:46:43 +0000 (10:46 +0000)]
Auto merge of #7978 - smoelius:master, r=llogiq
Add `unnecessary_to_owned` lint
This PR adds a lint to check for unnecessary calls to `ToOwned::to_owned` and other similar functions (e.g., `Cow::into_owned`, `ToString::to_string`, etc.).
The lint checks for expressions of the form `&receiver.to_owned_like()` used in a position requiring type `&T` where one of the following is true:
* `receiver`'s type is `T` exactly
* `receiver`'s type implements `Deref<Target = T>`
* `receiver`'s type implements `AsRef<T>`
The lint additionally checks for expressions of the form `receiver.to_owned_like()` used as arguments of type `impl AsRef<T>`.
It would be nice if the lint could also check for expressions used as arguments to functions like the following:
```
fn foo<T: AsRef<str>>(x: T) { ... }
```
However, I couldn't figure out how to determine whether a function input type was instantiated from a parameter with a trait bound.
If someone could offer me some guidance, I would be happy to add such functionality.
Matthias Krüger [Wed, 15 Dec 2021 00:28:08 +0000 (01:28 +0100)]
Rollup merge of #91881 - Patrick-Poitras:stabilize-iter-zip, r=scottmcm
Stabilize `iter::zip`
Hello all!
As the tracking issue (#83574) for `iter::zip` completed the final commenting period without any concerns being raised, I hereby submit this stabilization PR on the issue.
As the pull request that introduced the feature (#82917) states, the `iter::zip` function is a shorter way to zip two iterators. As it's generally a quality-of-life/ergonomic improvement, it has been integrated into the codebase without any trouble, and has been
used in many places across the rust compiler and standard library since March without any issues.
For more details, I would refer to `@cuviper's` original PR, or the [function's documentation](https://doc.rust-lang.org/std/iter/fn.zip.html).
Matthias Krüger [Wed, 15 Dec 2021 00:28:04 +0000 (01:28 +0100)]
Rollup merge of #90939 - estebank:wg-af-polish, r=tmandry
Tweak errors coming from `for`-loop, `?` and `.await` desugaring
* Suggest removal of `.await` on non-`Future` expression
* Keep track of obligations introduced by desugaring
* Remove span pointing at method for obligation errors coming from desugaring
* Point at called local sync `fn` and suggest making it `async`
```
error[E0277]: `()` is not a future
--> $DIR/unnecessary-await.rs:9:10
|
LL | boo().await;
| -----^^^^^^ `()` is not a future
| |
| this call returns `()`
|
= help: the trait `Future` is not implemented for `()`
help: do not `.await` the expression
|
LL - boo().await;
LL + boo();
|
help: alternatively, consider making `fn boo` asynchronous
|
LL | async fn boo () {}
| +++++
```
bors [Tue, 14 Dec 2021 21:15:22 +0000 (21:15 +0000)]
Auto merge of #91728 - Amanieu:stable_asm, r=joshtriplett
Stabilize asm! and global_asm!
Tracking issue: #72016
It's been almost 2 years since the original [RFC](https://github.com/rust-lang/rfcs/pull/2850) was posted and we're finally ready to stabilize this feature!
The main changes in this PR are:
- Removing `asm!` and `global_asm!` from the prelude as per the decision in #87228.
- Stabilizing the `asm` and `global_asm` features.
- Removing the unstable book pages for `asm` and `global_asm`. The contents are moved to the [reference](https://github.com/rust-lang/reference/pull/1105) and [rust by example](https://github.com/rust-lang/rust-by-example/pull/1483).
- All links to these pages have been removed to satisfy the link checker. In a later PR these will be replaced with links to the reference or rust by example.
- Removing the automatic suggestion for using `llvm_asm!` instead of `asm!` if you're still using the old syntax, since it doesn't work anymore with `asm!` no longer being in the prelude. This only affects code that predates the old LLVM-style `asm!` being renamed to `llvm_asm!`.
- Updating `stdarch` and `compiler-builtins`.
- Updating all the tests.
bors [Thu, 9 Dec 2021 22:49:47 +0000 (22:49 +0000)]
Auto merge of #8110 - xFrednet:0000-lintcheck-markdown-output, r=matthiaskrgr
Update lintcheck output to use tables and add markdown support
This PR updates changes lintcheck's output to use text tables and adds a markdown option to use Markdown links in the reports table. At first, I tried to keep the original output format, but the loading of old stats broke with the markdown option. The old format is therefore sadly incompatible with the new one. I can if requested make it in a way that the markdown output is only and optional additional output, but that would require more work for little benefit IMO.
For now, lintcheck has two output types. Here are the examples (best viewed on desktop):
target/lintcheck/sources/anyhow-1.0.38/build.rs:1:null clippy::cargo_common_metadata "package `anyhow` is missing `package.keywords` metadata"
target/lintcheck/sources/anyhow-1.0.38/src/error.rs:350:5 clippy::missing_panics_doc "docs for function which may panic missing `# Panics` section"
target/lintcheck/sources/anyhow-1.0.38/src/lib.rs:1:null clippy::cargo_common_metadata "package `anyhow` is missing `package.keywords` metadata"
bors [Thu, 9 Dec 2021 17:40:32 +0000 (17:40 +0000)]
Auto merge of #8096 - xFrednet:0000-remove-lintcheck-log-file, r=matthiaskrgr
Remove lintcheck log and add `--filter` option to lintcheck
This PR removes the really outdated lintcheck log from this repo and adds a new `--filter` option to force warnings of a lint. This also ignores `allow` attributes. I believe that this is a good thing, as we'll see if suppressed false positives are also fixed by the changes.
[..]/cargo-0.49.0/src/cargo/core/compiler/fingerprint.rs:1910:17 clippy::identity_op "the operation is ineffective. Consider reducing it to `(ret[0] as usize)`"
[..]/cargo-0.49.0/src/cargo/util/hex.rs:8:9 clippy::identity_op "the operation is ineffective. Consider reducing it to `num`"
[..]/libc-0.2.81/src/unix/linux_like/linux/mod.rs:2654:18 clippy::identity_op "the operation is ineffective. Consider reducing it to `(dev & 0x00000000000000ff)`"
[..]/libc-0.2.81/src/unix/linux_like/linux/mod.rs:2665:16 clippy::identity_op "the operation is ineffective. Consider reducing it to `(minor & 0x000000ff)`"
[..]/libc-0.2.81/src/unix/linux_like/mod.rs:1218:27 clippy::identity_op "the operation is ineffective. Consider reducing it to `IPOPT_CONTROL`"
[..]/rayon-1.5.0/src/slice/quicksort.rs:588:17 clippy::identity_op "the operation is ineffective. Consider reducing it to `len / 4`"
[..]/regex-1.3.2/src/dfa.rs:1380:14 clippy::identity_op "the operation is ineffective. Consider reducing it to `(empty_flags.start as u8)`"
Stats:
clippy::identity_op 7
ICEs:
```
Two of these lints are suppressed when lintcheck runs normally
---
changelog: none
r? `@matthiaskrgr` Feel free to reassign if you think that someone else would be a better reviewer :upside_down_face:
bors [Wed, 8 Dec 2021 19:09:25 +0000 (19:09 +0000)]
Auto merge of #8071 - GuillaumeGomez:method-must-use, r=xFrednet
Add new lint to warn when #[must_use] attribute should be used on a method
This lint is somewhat similar to https://rust-lang.github.io/rust-clippy/master/index.html#must_use_candidate but also different: it emits a warning by default and only targets methods (so not functions nor associated functions).
Someone suggested it to me after this tweet: https://twitter.com/m_ou_se/status/1466439813230477312
I think it would reduce the number of cases of API misuses quite a lot.
What do you think?
---
changelog: Added new [`return_self_not_must_use`] lint
bors [Tue, 7 Dec 2021 22:14:10 +0000 (22:14 +0000)]
Auto merge of #8075 - Qwaz:non_send_fields_documentation, r=xFrednet
Clarify the purpose of the non_send lint
PR 2/2 for issue #8045. Tried to tone down the warning message and clarify the intention of the lint. Specifically, I added a description that this lint tries to detect "types that are not safe to be sent to another thread".
bors [Mon, 6 Dec 2021 18:34:27 +0000 (18:34 +0000)]
Auto merge of #8042 - camsteffen:peel-blocks, r=xFrednet
Peel blocks and statements utils
changelog: none
* Rename `remove_blocks` to `peel_blocks`
* Add `peel_blocks_and_stmts`
* Various refactors to use the above utils
* The utils also now check `block.rules`
bors [Mon, 6 Dec 2021 15:15:26 +0000 (15:15 +0000)]
Auto merge of #8066 - rust-lang:needless_bool_parenthesize, r=camsteffen
Parenthesize blocks in `needless_bool` suggestion
Because the `if .. {}` statement already puts the condition in expression scope, contained blocks would be parsed as complete
statements, so any `&` binary expression whose left operand ended in a block would lead to a non-compiling suggestion.
We identify such expressions and add parentheses. Note that we don't make a difference between normal and unsafe blocks because the parsing problems are the same for both.
Andre Bogus [Thu, 2 Dec 2021 21:47:57 +0000 (22:47 +0100)]
Parenthesize blocks in `needless_bool` suggestion
Because the `if .. {}` statement already puts the condition in
expression scope, contained blocks would be parsed as complete
statements, so any `&` binary expression whose left operand ended in a
block would lead to a non-compiling suggestion.
This adds a visitor to identify such expressions and add parentheses.
The documentation also states that the author/assignee will be pinged. However, this doesn't seem to be the case, it at least hasn't done so for me and in this [PR](https://github.com/rust-lang/rust/pull/90642#issuecomment-962465404)