[libcxx-commits] [libcxx] [libc++] Support more GCC 15 type_traits builtins (PR #137871)

[Nikolas Klauser via libcxx-commits]

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@@ -20,8 +20,18 @@ _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if __has_builtin(__add_lvalue_reference)
 
+#  if defined(_LIBCPP_COMPILER_GCC)
+template <class _Tp>
+struct __add_lvalue_reference_gcc {
+  using type = __add_lvalue_reference(_Tp);
+};
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philnik777 wrote:

I'm not saying you should break GCC 14 with this patch. I'm saying you ahould just disable the problematic branches, and after we upgrade the CI to 15 we'll clean it up.

https://github.com/llvm/llvm-project/pull/137871