[libcxx-commits] [libcxx] [libcxxabi] [libc++][libc++abi] Minor follow-up changes after ptrauth upstreaming (PR #87481)

[Ahmed Bougacha via libcxx-commits]

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@@ -275,13 +275,15 @@ struct __type_info_implementations {
           __impl;
 };
 
-#    if defined(__arm64__) && __has_cpp_attribute(clang::ptrauth_vtable_pointer)
-#      if __has_feature(ptrauth_type_info_discriminated_vtable_pointer)
+#    if __has_cpp_attribute(_Clang::__ptrauth_vtable_pointer__) && __has_feature(__ptrauth_calls__)
+#      if __has_feature(__ptrauth_vtable_address_discrimination__) ||                                                  \
+          __has_feature(__ptrauth_vtable_type_discrimination__)
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ahmedbougacha wrote:

> Previously, the condition was __has_feature(ptrauth_type_info_discriminated_vtable_pointer), and I think it's better since it does not affect type info vtable pointers discrimination unless it's really implemented on clang side.

Yes, to be clear I agree that's what's best

https://github.com/llvm/llvm-project/pull/87481