libstdc++-v3/testsuite/23_containers/unordered_map/version.cc

   1 // { dg-do preprocess { target c++17 } }
   2 // { dg-add-options no_pch }
   3
   4 #include <unordered_map>
   5
   6 #if __cpp_lib_allocator_traits_is_always_equal != 201411L
   7 # error "Feature-test macro __cpp_lib_allocator_traits_is_always_equal has wrong value in <version>"
   8 #endif