Guillaume Gomez 784f04b367 Rollup merge of #117370 - nicholasbishop:bishop-better-c-variadic-errors, r=oli-obk ... C-variadic error improvements A couple improvements for c-variadic errors: 1. Fix the bad-c-variadic error being emitted multiple times. If a function incorrectly contains multiple `...` args, and is also not foreign or `unsafe extern "C"`, only emit the latter error once rather than once per `...`. 2. Explicitly reject `const` C-variadic functions. Trying to use C-variadics in a const function would previously fail with an error like "destructor of `VaListImpl<'_>` cannot be evaluated at compile-time". Add an explicit check for const C-variadics to provide a clearer error: "functions cannot be both `const` and C-variadic". This also addresses one of the concerns in https://github.com/rust-lang/rust/issues/44930: "Ensure that even when this gets stabilized for regular functions, it is still rejected on const fn."		2023-10-30 17:33:17 +01:00
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src	Explicitly reject const C-variadic functions	2023-10-30 10:38:25 -04:00
Cargo.toml	Clean up rustc_*/Cargo.toml.	2023-10-30 08:46:02 +11:00
messages.ftl	Explicitly reject const C-variadic functions	2023-10-30 10:38:25 -04:00