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// { dg-options "-std=gnu++0x" }
 
// Copyright (C) 2011 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/>.
 
// 20.4.2.1 [tuple.cnstr] Allocator-extended constructors
 
#include <memory>
#include <tuple>
#include <testsuite_hooks.h>
 
struct MyAlloc { };
 
// type that can't be constructed with an allocator
struct CannotUse
{
  CannotUse(int = 0, int = 0) : ok(true) { }
 
  bool ok;
};
 
// type that can be constructed with an allocator
// but which has uses_allocator == false
struct DoesNotUse
{
  typedef MyAlloc allocator_type;
 
  DoesNotUse(int = 0) : ok(true) { }
  DoesNotUse(std::allocator_arg_t, MyAlloc, int = 0) : ok(false) { }
  DoesNotUse(MyAlloc) : ok(false) { }
  DoesNotUse(int, MyAlloc) : ok(false) { }
 
  DoesNotUse(const DoesNotUse&) : ok(true) { }
  DoesNotUse(std::allocator_arg_t, MyAlloc, const DoesNotUse&) : ok(false) { }
  DoesNotUse(const DoesNotUse&, MyAlloc) : ok(false) { }
 
  DoesNotUse(DoesNotUse&&) : ok(true) { }
  DoesNotUse(std::allocator_arg_t, MyAlloc, DoesNotUse&&) : ok(false) { }
  DoesNotUse(DoesNotUse&&, MyAlloc) : ok(false) { }
 
  bool ok;
};
 
namespace std
{
  template<typename A> 
    struct uses_allocator<DoesNotUse, A> : false_type { };
}
 
// type that can be constructed with an allocator as second argument
struct UsesWithTag
{
  typedef MyAlloc allocator_type;
 
  UsesWithTag(int = 0) : ok(false) { }
  UsesWithTag(std::allocator_arg_t, MyAlloc, int = 0) : ok(true) { }
  UsesWithTag(MyAlloc) : ok(false) {  }
  UsesWithTag(int, MyAlloc) : ok(false) {  }
 
  UsesWithTag(const UsesWithTag&) : ok(false) { }
  UsesWithTag(std::allocator_arg_t, MyAlloc, const UsesWithTag&) : ok(true) { }
  UsesWithTag(const UsesWithTag&, MyAlloc) : ok(false) {  }
 
  UsesWithTag(UsesWithTag&&) : ok(false) { }
  UsesWithTag(std::allocator_arg_t, MyAlloc, UsesWithTag&&) : ok(true) { }
  UsesWithTag(UsesWithTag&&, MyAlloc) : ok(false) {  }
 
  bool ok;
};
 
// type that can be constructed with an allocator as last argument
struct UsesWithoutTag
{
  typedef MyAlloc allocator_type;
 
  UsesWithoutTag(int = 0) : ok(false) { }
  UsesWithoutTag(MyAlloc) : ok(true) { }
  UsesWithoutTag(int, MyAlloc) : ok(true) { }
 
  UsesWithoutTag(const UsesWithoutTag&) : ok(false) { }
  UsesWithoutTag(const UsesWithoutTag&, MyAlloc) : ok(true) { }
 
  UsesWithoutTag(UsesWithoutTag&&) : ok(false) { }
  UsesWithoutTag(UsesWithoutTag&&, MyAlloc) : ok(true) { }
 
  bool ok;
};
 
void test01()
{
  bool test __attribute__((unused)) = true;
  using std::allocator_arg;
  using std::tuple;
  using std::make_tuple;
  using std::get;
 
  typedef CannotUse T1;
  typedef DoesNotUse T2;
  typedef UsesWithTag T3;
  typedef UsesWithoutTag T4;
  typedef tuple<T1, T2, T3, T4> test_type;
 
  MyAlloc a;
 
  // default construction
  test_type t1(allocator_arg, a);
  VERIFY( get<0>(t1).ok );
  VERIFY( get<1>(t1).ok );
  VERIFY( get<2>(t1).ok );
  VERIFY( get<3>(t1).ok );
 
  // copy construction
  test_type t2(allocator_arg, a, t1);
  VERIFY( get<0>(t2).ok );
  VERIFY( get<1>(t2).ok );
  VERIFY( get<2>(t2).ok );
  VERIFY( get<3>(t2).ok );
 
  // move construction
  test_type t3(allocator_arg, a, std::move(t1));
  VERIFY( get<0>(t3).ok );
  VERIFY( get<1>(t3).ok );
  VERIFY( get<2>(t3).ok );
  VERIFY( get<3>(t3).ok );
 
  // construction from int
  test_type t4(allocator_arg, a, 1, 2, 3, 4);
  VERIFY( get<0>(t4).ok );
  VERIFY( get<1>(t4).ok );
  VERIFY( get<2>(t4).ok );
  VERIFY( get<3>(t4).ok );
 
  auto ints = make_tuple(1, 2, 3, 4);
 
  // construction from lvalue tuple of ints
  test_type t5(allocator_arg, a, ints);
  VERIFY( get<0>(t5).ok );
  VERIFY( get<1>(t5).ok );
  VERIFY( get<2>(t5).ok );
  VERIFY( get<3>(t2).ok );
 
  // construction from rvalue tuple of ints
  test_type t6(allocator_arg, a, std::move(ints));
  VERIFY( get<0>(t6).ok );
  VERIFY( get<1>(t6).ok );
  VERIFY( get<2>(t6).ok );
  VERIFY( get<3>(t6).ok );
 
}
 
int main()
{
  test01();
  return 0;
}