[clang] [compiler-rt] [llvm] [PAC][AArch64] Support init/fini array signing (PR #96478)

[Daniil Kovalev via cfe-commits]

kovdan01 wrote:

@piotrAMD It looks like that `__has_feature` preprocessor directive support was implemented in gcc only in 2023: https://github.com/gcc-mirror/gcc/commit/06280a906cb3dc80cf5e07cf3335b758848d488d

Thanks for reporting. I suppose we can just surround this chunk of code with `#ifdef __clang__`. I'll open corresponding PR shortly.

https://github.com/llvm/llvm-project/pull/96478