[libcxx-commits] [libcxx] [libc++] Simplify the implementation of <stddef.h> (PR #86843)

[Louis Dionne via libcxx-commits]

ldionne wrote:

Thanks for the heads up. We actually ran across exactly one instance of this issue downstream and finished root-causing it just this morning. Indeed, I don't think this is something we can or should do anything about, but it will break a very small number of projects indeed.

The symptom we saw was a missing `rsize_t` typedef but the cause was the same -- `stddef.h` being included inside a namespace.

Pinging @llvm/libcxx-vendors in case someone comes across a weird issue, this may save you some time to diagnose it.

https://github.com/llvm/llvm-project/pull/86843