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