| // { dg-options "-std=gnu++23" } | |
| // { dg-do preprocess { target c++23 } } | |
| #include <version> | |
| #ifndef __cpp_lib_unreachable | |
| # error "Feature-test macro for unreachable missing in <version>" | |
| #elif __cpp_lib_unreachable != 202202L | |
| # error "Feature-test macro for unreachable has wrong value in <version>" | |
| #endif |