Unnamed repository; edit this file 'description' to name the repository.
Auto merge of #115910 - eduardosm:lang-fns-target-features, r=cjgillot
Prevent using `#[target_feature]` on lang item functions
Fixes https://github.com/rust-lang/rust/issues/109411 and also prevents from using `#[target_feature]` on other `fn` lang items to mitigate the concerns from https://github.com/rust-lang/rust/issues/109411#issuecomment-1477030273.
