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

[Daniil Kovalev via llvm-commits]

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@@ -597,6 +606,18 @@ _LIBUNWIND_EXPORT uintptr_t _Unwind_GetIP(struct _Unwind_Context *context) {
   unw_cursor_t *cursor = (unw_cursor_t *)context;
   unw_word_t result;
   __unw_get_reg(cursor, UNW_REG_IP, &result);
+
+#if defined(__ARM64E__)
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kovdan01 wrote:

It looks like you've accidentally changes this from a generic check against ptrauth being enabled to a check against arm64e. To make tests passing on Linux, we need to use smth like `_LIBUNWIND_TARGET_AARCH64_AUTHENTICATED_UNWINDING`.

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