[libcxx] [libcxxabi] [libunwind] [llvm] [libc++] Enable -Wmissing-prototypes (PR #116261)

[Nikolas Klauser via llvm-commits]

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philnik777 wrote:

It's not a requirement, though I'm having trouble figuring out where `__gnu_unwind_frame` comes from at all. It doesn't seem to be a public function. I guess we were just assuming it's provided before, even though it's an implementation detail? If that's the case we definitely have to add a comment about that on a declaration inside libc++abi, and maybe try to get other unwind libraries to make it part of the public interface.

https://github.com/llvm/llvm-project/pull/116261