libstdc++-v3/testsuite/20_util/allocator_traits/members/select.cc

   1 // { dg-options "-std=gnu++0x" }
   2
   3 // Copyright (C) 2011-2013 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #include <memory>
  21 #include <testsuite_hooks.h>
  22
  23 struct X { };
  24
  25 template<typename T>
  26 struct alloc1
  27 {
  28   typedef T value_type;
  29
  30   int id;
  31 };
  32
  33 template<typename T>
  34 struct alloc2
  35 {
  36   typedef T value_type;
  37
  38   int id;
  39
  40   alloc2 select_on_container_copy_construction() const
  41   { return alloc2{id+1}; }
  42 };
  43
  44
  45 void test01()
  46 {
  47   typedef std::allocator_traits<alloc1<X>> traits_type;
  48   traits_type::allocator_type a{1};
  49   const traits_type::allocator_type& a2
  50     = traits_type::select_on_container_copy_construction(a);
  51   VERIFY( a2.id == a.id );
  52 }
  53
  54 void test02()
  55 {
  56   typedef std::allocator_traits<alloc2<X>> traits_type;
  57   traits_type::allocator_type a{1};
  58   const traits_type::allocator_type& a2
  59     = traits_type::select_on_container_copy_construction(a);
  60   VERIFY( a2.id != a.id );
  61 }
  62
  63 int main()
  64 {
  65   test01();
  66   test02();
  67 }