[PATCH] D150226: [Clang] Remove ability to downgrade warning on the diagnostic for setting a non fixed enum to a value outside the range of the enumeration values

[Eli Friedman via Phabricator via cfe-commits]

efriedma added a comment.

> Also note, one of the bugs I reference shows how this breaks SFINAE: https://github.com/llvm/llvm-project/issues/57176 and that is not easily fixable. So this is non-conforming since it breaks valid code.

You can mark a warning diagnostic SFINAEFailure to ensure it's treated as an error in contexts where SFINAE matters.  It might make sense to do that as an intermediate step.


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  https://reviews.llvm.org/D150226/new/

https://reviews.llvm.org/D150226