[PATCH] D86993: Document Clang's expectations of the C standard library.

[Ralf via Phabricator via cfe-commits]

RalfJung added a comment.

I was told that "glibc explicitly only marks memcpy arguments as nonnull for external use of headers (i.e. the nonnull assumptions are disabled when compiling the implementation)"... okay now re-reading this, that's a statement about glibc, not GCC.

Anyway this is outside my expertise. I will try to add Nikita here who said "GCC also requires passing equal pointer to memcpy to be legal".


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https://reviews.llvm.org/D86993