[llvm-branch-commits] Prepare libcxx and libcxxabi for pointer field protection. (PR #151651)

[Nikolas Klauser via llvm-branch-commits]

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@@ -109,4 +109,14 @@
 #  define _LIBCXXABI_NOEXCEPT noexcept
 #endif
 
+#if defined(_LIBCXXABI_COMPILER_CLANG)
+#  if defined(__POINTER_FIELD_PROTECTION__)
+#    define _LIBCXXABI_NO_PFP [[clang::no_field_protection]]
+#  else
+#    define _LIBCXXABI_NO_PFP
+#  endif
+#else
+#  define _LIBCXXABI_NO_PFP
+#endif
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philnik777 wrote:

Why is this different from the libc++ version?

https://github.com/llvm/llvm-project/pull/151651