| // RUN: %clang_cc1 -fms-compatibility -fms-compatibility-version=19.33 -std=c++20 -verify=supported %s |
| // RUN: %clang_cc1 -fms-compatibility -fms-compatibility-version=19.32 -std=c++20 -verify=unsupported %s |
| // supported-no-diagnostics |
| |
| [[nodiscard]] |
| [[msvc::constexpr]] // unsupported-warning {{unknown attribute 'constexpr' ignored}} |
| inline void* operator new(decltype(sizeof(void*)), void* p) noexcept { return p; } |
| |
| namespace std { |
| constexpr int* construct_at(int* p, int v) { |
| [[msvc::constexpr]] return ::new (p) int(v); // unsupported-warning {{unknown attribute 'constexpr' ignored}} |
| } |
| } |
| |
| constexpr bool check_construct_at() { int x; return *std::construct_at(&x, 42) == 42; } |
| static_assert(check_construct_at()); |