[compiler-rt] [libcxx] [libcxxabi] [libunwind] [runtimes][PAC] Harden unwinding when possible (PR #143230)

[Daniil Kovalev via llvm-commits]

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@@ -103,6 +103,52 @@
 #define _LIBCXXABI_DTOR_FUNC
 #endif
 
+#if __has_include(<ptrauth.h>)
+#  include <ptrauth.h>
+#endif
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kovdan01 wrote:

@ojhunt Can we get rid of `__has_include(<ptrauth.h>)` check here and switch to `__has_feature(ptrauth_calls) || defined(__PTRAUTH__)` just as a couple of lines below?

https://github.com/llvm/llvm-project/pull/143230