libstdc++-v3/testsuite/23_containers/map/allocator/minimal.cc

   1 // Copyright (C) 2013-2018 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 run { target c++11 } }
  19
  20 #include <map>
  21 #include <memory>
  22 #include <testsuite_hooks.h>
  23 #include <testsuite_allocator.h>
  24
  25 struct T { int i; };
  26
  27 bool operator<(T l, T r) { return l.i < r.i; }
  28
  29 using Cmp = std::less<T>;
  30
  31 struct U { };
  32
  33 using __gnu_test::SimpleAllocator;
  34
  35 template class std::map<T, U, Cmp, SimpleAllocator<std::pair<const T, U>>>;
  36
  37 void test01()
  38 {
  39   typedef SimpleAllocator<std::pair<const T, U>> alloc_type;
  40   typedef std::allocator_traits<alloc_type> traits_type;
  41   typedef std::map<T, U, Cmp, alloc_type> test_type;
  42   test_type v(alloc_type{});
  43   v = { test_type::value_type{} };
  44   VERIFY( v.max_size() < traits_type::max_size(v.get_allocator()) );
  45 }
  46
  47 int main()
  48 {
  49   test01();
  50   return 0;
  51 }