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4b7e55ada3
disallow `repr()` on invalid items fixes https://github.com/rust-lang/rust/issues/129606 fixes https://github.com/rust-lang/rust/issues/132391 Disallows `repr()` (so a repr with no arguments) on items where that won't ever make sense. Also this generates an error when `repr` is used on a trait method and the `fn_align` feature is not enabled. Looks like that was missed here: https://github.com/rust-lang/rust/pull/110313/files Which first accepts the align attribute on trait methods. r? `@compiler-errors` cc `@jdonszelmann` who claimed https://github.com/rust-lang/rust/issues/132391 and generally has been working on attributes