Add a lint pass that warns about unknown annotations. #6884
Labels
A-attributes
Area: Attributes (`#[…]`, `#![…]`)
A-lint
Area: Lints (warnings about flaws in source code) such as unused_mut.
Comments
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+1 |
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Related #2976. Nominating feature-complete. |
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Related to #7318 |
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Just a bug, more of a developer issue |
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(I think we agreed informally that such a lint pass might be useful to some, but that it would be turned off ( |
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This is fixed by #10316. |
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hurray! |
flip1995
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Mar 12, 2021
…earth move lintcheck into its own crate This pr: * moves lintcheck out of `clippy dev` and into its own crate (`lintcheck`) (I should have done this earlier :D) * makes lintcheck terminate if it is not launched from the repo root (to prevent problems with wrong paths when using `cargo run` in the crate root) * fixes json lint messages leaking the runners `$HOME` when a lint messages comes from a proc macro that originates from a crate inside the `$CARGO_CACHE` * adds more documentation to lintchecks `README.md` and mentions lintcheck in `docs/basics.md` changelog: none
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The compiler does not warn about annotations it does not recognize. I recently noticed some code annotated with several instances of
#[incline]. Those annotations had been sitting there unnoticed for over a year. It would be nice if the compiler would emit a warning.As discussed on IRC, one way this might be implemented would be marking annotations as 'used' when they are used, and then do a pass very late in compilation that checks for unused annotations. This would free the lint pass from having a list of valid annotations and their semantics.
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