libstdc++-v3/testsuite/23_containers/vector/requirements/version.cc

   1 // { dg-options "-std=gnu++20" }
   2 // { dg-do preprocess { target c++20 } }
   3 // { dg-require-effective-target hosted }
   4
   5 #include <version>
   6
   7 #ifndef __cpp_lib_constexpr_vector
   8 # error "Feature test macro for constexpr vector is missing in <version>"
   9 #elif __cpp_lib_constexpr_vector != 201907L
  10 # error "Feature test macro for constexpr vector has wrong value in <version>"
  11 #endif