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

   1 // Copyright (C) 2013-2021 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 // This test fails to compile since C++17 (see xfail-if below) so we can only
  19 // do a "run" test for C++11 and C++14, and a "compile" test for C++17 and up.
  20 // { dg-do run { target { c++11_only || c++14_only } } }
  21 // { dg-do compile { target c++17 } }
  22
  23 #include <unordered_set>
  24 #include <memory>
  25 #include <testsuite_hooks.h>
  26 #include <testsuite_allocator.h>
  27
  28 struct T { int i; };
  29 bool operator==(const T& l, const T& r) { return l.i == r.i; }
  30 struct H { std::size_t operator()(const T& t) const noexcept { return t.i; }
  31 };
  32 struct E : std::equal_to<T> { };
  33
  34 using __gnu_test::CustomPointerAlloc;
  35
  36 // { dg-xfail-if "node reinsertion assumes raw pointers" { c++17 } }
  37 // TODO when removing this xfail change the test back to "dg-do run".
  38 template class std::unordered_set<T, H, E, CustomPointerAlloc<T>>;
  39
  40 void test01()
  41 {
  42   typedef CustomPointerAlloc<T> alloc_type;
  43   typedef std::unordered_set<T, H, E, alloc_type> test_type;
  44   test_type v;
  45   v.insert(T());
  46   VERIFY( ++v.begin() == v.end() );
  47 }
  48
  49 int main()
  50 {
  51   test01();
  52 }