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[gcc.git] / libstdc++-v3 / testsuite / 23_containers / priority_queue / requirements / uses_allocator.cc

// Copyright (C) 2014-2015 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

// { dg-options "-std=gnu++11" }
// { dg-do compile }

#include <queue>

template<typename A>
  using uses_allocator = std::uses_allocator<std::priority_queue<int>, A>;

static_assert( uses_allocator<std::allocator<int>>::value, "valid allocator" );

struct X { };
static_assert( !uses_allocator<X>::value, "invalid allocator" );