Optimize strip_prefix and strip_suffix with str patterns
As mentioned in https://github.com/rust-lang/rust/issues/67302#issuecomment-585639226.
I'm not sure whether adding these methods to `Pattern` is desirable—but they have default implementations so the change is backwards compatible. Plus it seems like they're slated for wholesale replacement soon anyway? #56345
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Constructing a Searcher in strip_prefix and strip_suffix is
unnecessarily slow when the pattern is a fixed-length string. Add
strip_prefix and strip_suffix methods to the Pattern trait, and add
optimized implementations of these methods in the str implementation.
The old implementation is retained as the default for these methods.
use is_empty() instead of len comparison (clippy::len_zero)
use if let instead of while let loop that never loops (clippy::never_loop)
remove redundant returns (clippy::needless_return)
remove redundant closures (clippy::redundant_closure)
use if let instead of match and wildcard pattern (clippy::single_match)
don't repeat field names redundantly (clippy::redundant_field_names)
This is a follow-up to #70123, which added `llvm-config --libdir` to the
`LIBRARY_PATH` for rustc tools. We need the same for "run-make-fulldeps"
and "ui-fulldeps" tests which depend on compiler libraries, implicitly
needing to link to `-lLLVM` as well.
Lint unnamed address comparisons
Functions and vtables have an insignificant address. Attempts to compare such addresses will lead to very surprising behaviour. For example: addresses of different functions could compare equal; two trait object pointers representing the same object and the same type could be unequal.
Lint against unnamed address comparisons to avoid issues like those in rust-lang/rust#69757 and rust-lang/rust#54685.
changelog: New lints: [`fn_address_comparisons`] [#5294](https://github.com/rust-lang/rust-clippy/pull/5294), [`vtable_address_comparisons`] [#5294](https://github.com/rust-lang/rust-clippy/pull/5294)
The wasm32-wasi target delegates its malloc implementation to the
functions in wasi-libc, but the invocation of `aligned_alloc` was
incorrect by passing the number of bytes requested first rather than the
alignment. This commit swaps the order of these two arguments to ensure
that we allocate over-aligned memory correctly.
Document how to create releases and backports
This PR adds documentation on how to create Clippy releases and backports.
This PR also introduces a new backport/release process for Clippy:
- A beta branch is introduced: https://github.com/rust-lang/rust-clippy/tree/beta
- Backports are now done by PRs to the `beta` branch
- also commits to the beta branch will be deployed, so that the documentation page has a tab for the Clippy beta release.
This has two advantages:
1. The Clippy release process is closer to the Rust release process: stable releases are tagged, the beta release has its own branch
2. Backports to beta are easier, since they don't need as much coordination as before. No new branch has to be created for a backport. Just a PR to the beta branch, like in the Rust repo.¹
I tested the deployment here: https://github.com/flip1995/rust-clippy/runs/534465081 and it created this commit: 734503377e, so it works.
r? @Manishearth your thoughts?
[Rendered (release.md)](https://github.com/flip1995/rust-clippy/blob/doc_release_backport/doc/release.md)
[Rendered (backport.md)](https://github.com/flip1995/rust-clippy/blob/doc_release_backport/doc/backport.md)
changelog: none
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¹: For this, we may have to modify the CI, so that beta rustc is used to check PRs to beta (or we test it locally, and merge it without bors)
`unused_self` false positive
fixes#5351
Remove the for loop in `unused_self` so that lint enabled for one method doesn't trigger on another method.
changelog: Fix false positive in `unused_self` around lint gates on impl items
