| // RUN: %clang_cc1 -std=c++20 -verify %s -DBUILTIN=builtin |
| // RUN: %clang_cc1 -std=c++20 -verify %s -DBUILTIN=nobuiltin -fno-builtin |
| // RUN: %clang_cc1 -std=c++20 -verify %s -DBUILTIN=nobuiltin -fno-builtin-std-move -fno-builtin-std-move_if_noexcept -fno-builtin-std-forward -fno-builtin-std-forward_like |
| // RUN: %clang_cc1 -std=c++20 -verify %s -DBUILTIN=nobuiltin -ffreestanding |
| // expected-no-diagnostics |
| |
| int nobuiltin; |
| |
| namespace std { |
| template<typename T> constexpr T &&move(T &x) { return (T&&)nobuiltin; } |
| template<typename T> constexpr T &&move_if_noexcept(T &x) { return (T&&)nobuiltin; } |
| template<typename T> constexpr T &&forward(T &x) { return (T&&)nobuiltin; } |
| template<typename U, typename T> constexpr T &&forward_like(T &X) { return (T&&)nobuiltin; } |
| } |
| |
| template<typename T> constexpr T *addr(T &&r) { return &r; } |
| |
| int builtin; |
| static_assert(addr(std::move(builtin)) == &BUILTIN); |
| static_assert(addr(std::move_if_noexcept(builtin)) == &BUILTIN); |
| static_assert(addr(std::forward(builtin)) == &BUILTIN); |
| static_assert(addr(std::forward_like<int&>(builtin)) == &BUILTIN); |