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

   1 // Copyright (C) 2019-2025 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do compile { target c++20 } }
  19 // { dg-add-options no_pch }
  20
  21 #include <span>
  22
  23 #ifndef __cpp_lib_span
  24 # error "Feature-test macro for span missing in <span>"
  25 #elif __cplusplus <= 202302L && __cpp_lib_span != 202002L
  26 # error "Feature-test macro for span has wrong value in <span>"
  27 #elif __cplusplus > 202302L && __cpp_lib_span != 202311L
  28 # error "Feature-test macro for span has wrong value in <span>"
  29 #endif
  30
  31 #undef __cpp_lib_span
  32 #include <version>
  33
  34 #ifndef __cpp_lib_span
  35 # error "Feature-test macro for span missing in <version>"
  36 #elif __cplusplus <= 202302L && __cpp_lib_span != 202002L
  37 # error "Feature-test macro for span has wrong value in <version>"
  38 #elif __cplusplus > 202302L && __cpp_lib_span != 202311L
  39 # error "Feature-test macro for span has wrong value in <version>"
  40 #endif