libstdc++-v3/testsuite/23_containers/queue/requirements/uses_allocator.cc

   1 // Copyright (C) 2014-2015 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-options "-std=gnu++11" }
  19 // { dg-do compile }
  20
  21 #include <queue>
  22
  23 template<typename A>
  24   using uses_allocator = std::uses_allocator<std::queue<int>, A>;
  25
  26 static_assert( uses_allocator<std::allocator<int>>::value, "valid allocator" );
  27
  28 struct X { };
  29 static_assert( !uses_allocator<X>::value, "invalid allocator" );