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Rollup merge of #101156 - Jarcho:remove_sync_lint_pass, r=compiler-errors

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Remove `Sync` requirement from lint pass objects

This is blocking the clippy sync (#101140). One of the lint passes contains a `Cell` in order to make lifetimes work. It could be worked around, but this is the easier change to make if there are no objections.

Rational for removing the requirement
* All lint pass methods take `&mut self` arguments.
* Many passes depend on running is visitor order.
* Lint passes are created on demand so they're only ever stored in a local.
* `Send` is enough to lint different passes in parallel.

`LintStore` remains `Sync` with this. The constructor functions it contains still maintain their `Sync` requirement.

r? rust-lang/compiler
This commit is contained in:
Matthias Krüger 2022-08-29 21:13:00 +02:00 committed by GitHub
commit bf42ba41a4
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1 changed files with 2 additions and 3 deletions
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5
compiler/rustc_lint/src/passes.rs
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@ -243,6 +243,5 @@ macro_rules! declare_combined_early_lint_pass {
}
/// A lint pass boxed up as a trait object.
pub type EarlyLintPassObject = Box<dyn EarlyLintPass + sync::Send + sync::Sync + 'static>;
pub type LateLintPassObject =
Box<dyn for<'tcx> LateLintPass<'tcx> + sync::Send + sync::Sync + 'static>;
pub type EarlyLintPassObject = Box<dyn EarlyLintPass + sync::Send + 'static>;
pub type LateLintPassObject = Box<dyn for<'tcx> LateLintPass<'tcx> + sync::Send + 'static>;