libstdc++-v3/testsuite/21_strings/basic_string/version.cc

   1 // { dg-do compile { target c++17 } }
   2 // { dg-require-effective-target hosted }
   3
   4 #include <version>
   5
   6 #ifndef __cpp_lib_constexpr_string
   7 # error "Feature-test macro for constexpr std::string missing in <version>"
   8 #endif
   9
  10 #if __cplusplus == 201703L
  11 # if __cpp_lib_constexpr_string != 201611L
  12 #  error "Feature-test macro for constexpr std::string has wrong value for C++17 in <version>"
  13 # endif
  14 #endif
  15
  16 #if __cplusplus == 202002L
  17 # if _GLIBCXX_USE_CXX11_ABI
  18 #  if __cpp_lib_constexpr_string != 201907L
  19 #   error "Feature-test macro for constexpr std::string has wrong value for C++20 in <version>"
  20 #  endif
  21 # else // COW strings
  22 #  if __cpp_lib_constexpr_string != 201811L
  23 #   error "Feature-test macro for constexpr std::string has wrong value for C++20 in <version>"
  24 #  endif
  25 # endif
  26 #endif