[clang] [clang] Add `clang::behaves_like_std(...)` attribute (PR #76596)

[Nikolas Klauser via cfe-commits]

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@@ -0,0 +1,20 @@
+// RUN: %clang_cc1 -fsyntax-only -std=c++11 -verify %s
+
+namespace mystd {
+inline namespace bar {
+template <class T> struct remove_reference { typedef T type; };
+template <class T> struct remove_reference<T&> { typedef T type; };
+template <class T> struct remove_reference<T&&> { typedef T type; };
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philnik777 wrote:

Maybe just use `__remove_reference_t`?

https://github.com/llvm/llvm-project/pull/76596