1// Multimap iterator invalidation tests
2
3// Copyright (C) 2003-2015 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 <debug/map>
21#include <iterator>
22#include <testsuite_hooks.h>
23#include <utility>
24
25using __gnu_debug::multimap;
26using std::advance;
27
28bool test = true;
29
30// Erase
31void test02()
32{
33  multimap<int, int> v;
34  for (int i = 0; i < 20; ++i)
35    v.insert(std::make_pair(i, 20-i));
36
37  // Single element erase (middle)
38  multimap<int, int>::iterator before = v.begin();
39  multimap<int, int>::iterator at = before;
40  advance(at, 3);
41  multimap<int, int>::iterator after = at;
42  ++after;
43  v.erase(at);
44  VERIFY(before._M_dereferenceable());
45  VERIFY(at._M_singular());
46  VERIFY(after._M_dereferenceable());
47
48  // Multiple element erase
49  before = v.begin();
50  at = before;
51  advance(at, 3);
52  after = at;
53  advance(after, 4);
54  v.erase(at, after);
55  VERIFY(before._M_dereferenceable());
56  VERIFY(at._M_singular());
57
58  // clear()
59  before = v.begin();
60  multimap<int, int>::iterator finish = v.end();
61  VERIFY(before._M_dereferenceable());
62  v.clear();
63  VERIFY(before._M_singular());
64  VERIFY(!finish._M_singular() && !finish._M_dereferenceable());
65}
66
67int main()
68{
69  test02();
70  return 0;
71}
72