[llvm-bugs] [Bug 41420] missed opt: nounwind on extern "C"

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=41420

Richard Smith <richard-llvm at metafoo.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |INVALID
             Status|NEW                         |RESOLVED

--- Comment #1 from Richard Smith <richard-llvm at metafoo.co.uk> ---
An extern "C" function can be implemented in C++, and even if implemented in C
it can still unwind. For example, pthread cancellation might be implemented by
unwinding, or it might throw an Objective-C exception. Marking such a function
as nounwind would be incorrect.

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