[PATCH] D56624: [Sanitizers] UBSan unreachable incompatible with ASan in the presence of `noreturn` calls

[Vedant Kumar via Phabricator via cfe-commits]

vsk added a comment.

What are the advantages of a generalized expect_noreturn attribute, vs. a narrower attribute or intrinsic? The expect_noreturn semantics do not provide strong guarantees, and are not really orthogonal from the pre-existing cold attribute. In particular, expect_noreturn doesn't even seem strong enough to allow ASan to unpoison its stack.

Apologies if discussion has shifted elsewhere -- I'd be happy to chime in on the new review.


Repository:
  rL LLVM

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  https://reviews.llvm.org/D56624/new/

https://reviews.llvm.org/D56624