Lint `[single_match]` on `Option` matches
fixes#8928
changelog: did some cleanup of the logic for ``[`single_match`]`` and ``[`single_match_else`]`` which fixes the bug where `Option` matches were not linted unless a wildcard was used for one of the arms.
ignore item in `thread_local!` macro
close#8493
This PR ignores `thread_local` macro in `declare_interior_mutable_const`.
changelog: ignore `thread_local!` macro in `declare_interior_mutable_const`
Fix `extra_unused_lifetimes` false positive
This PR fixes#9014.
I confirmed the FP on the `crates.io` source as `@JohnTitor` mentioned, and confirmed that the FP is no longer present following this change.
I did not include a test in this PR because I think constructing one would be complicated, and the fix is pretty simple. But please let me know if this is unacceptable.
changelog: fix `extra_unused_lifetimes` FP
Check for `--force-warn` in Clippy's driver run condition
Just a thing I've noticed while tinkering on the driver. Currently, the driver only checks for `--cap-lints=allow` to determine if Clippy should run on the code, but ignores possible `--force-warn` arguments
---
changelog: Others: Allowing all lints and only `--force-warn`ing some will now work with Clippy's driver
add vec.capacity() to [`slow_vec_initialization`] detection
fix#8800
for example
```rust
let mut vec1 = Vec::with_capacity(len);
vec1.resize(vec1.capacity(), 0);
let mut vec2 = Vec::with_capacity(len);
vec2.extend(repeat(0).take(vec2.capacity()));
```
will trigger the lint
---
changelog: add `vec.capacity()` to [`slow_vec_initialization`] detection
confirm using chain in collapsible_span_lint_calls
close#8798
This PR fixes false positive when using chain in `collapsible_span_lint_calls`.
changelog: None
put parentheses around neg_multiply suggestion if needed
*Please write a short comment explaining your change (or "none" for internal only changes)*
changelog: [`neg_multiply`]: put parentheses around suggestion if needed
`For` example should be used instead `while` in WHILE_LET_ON_ITERATOR
For example should be used instead while in WHILE_LET_ON_ITERATOR
Revert some changes
Fix cargo dev fmt
Adds more details about how a significant drop in a match scrutinee can
cause a deadlock and include link to documentation. Emits messages
indicating temporaries with significant drops in arms of matches and
message about possible deadlocks/unexpected behavior.
changelog: Add more details to significant drop lint to explicitly show
how temporaries in match scrutinees can cause deadlocks/unexpected
behavior.
