[PATCH] D147975: [StackProtector] don't check stack protector before calling nounwind functions

[Phoebe Wang via Phabricator via llvm-commits]

pengfei added a comment.

I'm a little nervous about the assumptions that we don't need to consider for C code. There're other exception behaviors like SJLJ, signal and Windows SEH. IIRC, both SJLJ and SEH will do stack unwind as well.
And I think they are more risky somehow, because they can catch up hardware exceptions like dividend by 0, segment fault or illegal instructions. These exceptions are relative eaiser for an attacker to trigger than a normal C++ exception.


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  https://reviews.llvm.org/D147975/new/

https://reviews.llvm.org/D147975