[libc-commits] [libc] [libc] fix build on aarch64 (PR #73739)

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lntue wrote:

> @lntue There is another seemingly strange error on x86-64:
> 
> Should I try to fix it by including subparts of `type_traits`?

I'll investigate that error.  Look like something messing up the `_Float16` type detection macros.

https://github.com/llvm/llvm-project/pull/73739