libstdc++-v3/testsuite/23_containers/unordered_set/allocator/ext_ptr.cc

   1 // Copyright (C) 2013 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
  20 #include <unordered_set>
  21 #include <memory>
  22 #include <testsuite_hooks.h>
  23 #include <testsuite_allocator.h>
  24
  25 struct T { int i; };
  26 bool operator==(const T& l, const T& r) { return l.i == r.i; }
  27 struct H { std::size_t operator()(const T& t) const noexcept { return t.i; }
  28 };
  29 struct E : std::equal_to<T> { };
  30
  31 using __gnu_test::CustomPointerAlloc;
  32
  33 template class std::unordered_set<T, H, E, CustomPointerAlloc<T>>;
  34
  35 void test01()
  36 {
  37   bool test __attribute__((unused)) = true;
  38   typedef CustomPointerAlloc<T> alloc_type;
  39   typedef std::unordered_set<T, H, E, alloc_type> test_type;
  40   test_type v;
  41   v.insert(T());
  42   VERIFY( ++v.begin() == v.end() );
  43 }
  44
  45 int main()
  46 {
  47   test01();
  48 }