| // { dg-do compile { target c++17 } } |
| // { dg-require-effective-target hosted } |
| |
| #include <version> |
| |
| #ifndef __cpp_lib_constexpr_string |
| # error "Feature-test macro for constexpr std::string missing in <version>" |
| #endif |
| |
| #if __cplusplus == 201703L |
| # if __cpp_lib_constexpr_string != 201611L |
| # error "Feature-test macro for constexpr std::string has wrong value for C++17 in <version>" |
| # endif |
| #endif |
| |
| #if __cplusplus == 202002L |
| # if _GLIBCXX_USE_CXX11_ABI |
| # if __cpp_lib_constexpr_string != 201907L |
| # error "Feature-test macro for constexpr std::string has wrong value for C++20 in <version>" |
| # endif |
| # else // COW strings |
| # if __cpp_lib_constexpr_string != 201811L |
| # error "Feature-test macro for constexpr std::string has wrong value for C++20 in <version>" |
| # endif |
| # endif |
| #endif |
