================
@@ -0,0 +1,431 @@
+// RUN: %clang_cc1 -std=c++20 -Wno-unused %s -verify=expected,cxx20
-Wno-vla-cxx-extension
+// RUN: %clang_cc1 -std=c++23 -Wno-unused %s -verify=expected,sincecxx23
-Wno-vla-cxx-extension
+// RUN: %clang_cc1 -std=c++26 -Wno-unused %s -verify=expected,sincecxx23
-Wno-vla-cxx-extension
+// RUN: %clang_cc1 -std=c++26 -DINLINE_NAMESPACE -Wno-unused %s
-verify=expected,sincecxx23 -Wno-vla-cxx-extension
+
+inline constexpr void* operator new(__SIZE_TYPE__, void* p) noexcept { return
p; }
+namespace std {
+template<typename T, typename... Args>
+constexpr T* construct_at(T* p, Args&&... args) { return ::new((void*)p)
T(static_cast<Args&&>(args)...); }
+template<typename T>
+constexpr void destroy_at(T* p) { p->~T(); }
+template<typename T>
+struct allocator {
+ constexpr T* allocate(__SIZE_TYPE__ n) { return static_cast<T*>(::operator
new(n * sizeof(T))); }
+ constexpr void deallocate(T* p, __SIZE_TYPE__) { ::operator delete(p); }
+};
+using nullptr_t = decltype(nullptr);
+template<typename T, T v>
+struct integral_constant { static constexpr T value = v; };
+template<bool v>
+using bool_constant = integral_constant<bool, v>;
+using true_type = bool_constant<true>;
+using false_type = bool_constant<false>;
+template<typename T>
+inline constexpr bool is_function_v = __is_function(T);
+#ifdef INLINE_NAMESPACE
----------------
ldionne wrote:
Ack, thanks.
https://github.com/llvm/llvm-project/pull/91895
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