1// Vector iterator invalidation tests
2
3// Copyright (C) 2003, 2004, 2005 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 2, 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 COPYING.  If not, write to the Free
18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19// USA.
20
21// We need to be pedantic about reallocations for this testcase to be correct.
22// { dg-options "-D_GLIBCXX_DEBUG_PEDANTIC" }
23
24#ifndef _GLIBCXX_DEBUG_PEDANTIC
25#  define _GLIBCXX_DEBUG_PEDANTIC 1
26#endif
27
28#include <debug/vector>
29#include <testsuite_hooks.h>
30
31using __gnu_debug::vector;
32
33bool test = true;
34
35// Resize
36void test02()
37{
38  vector<int> v(10, 17);
39  v.reserve(20);
40
41  vector<int>::iterator before = v.begin() + 6;
42  vector<int>::iterator at = before + 1;
43  vector<int>::iterator after = at + 1;
44
45  // Shrink
46  v.resize(7);
47  VERIFY(before._M_dereferenceable());
48  VERIFY(at._M_singular());
49  VERIFY(after._M_singular());
50
51  // Grow, without reallocation
52  before = v.begin() + 6;
53  v.resize(17);
54  VERIFY(before._M_dereferenceable());
55
56  // Grow, with reallocation
57  v.resize(42);
58  VERIFY(before._M_singular());
59}
60
61int main()
62{
63  test02();
64  return 0;
65}
66