1// Vector 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// We need to be pedantic about reallocations for this testcase to be correct.
21// { dg-options "-D_GLIBCXX_DEBUG_PEDANTIC" }
22
23#ifndef _GLIBCXX_DEBUG_PEDANTIC
24#  define _GLIBCXX_DEBUG_PEDANTIC 1
25#endif
26
27#include <debug/vector>
28#include <testsuite_hooks.h>
29
30using __gnu_debug::vector;
31
32bool test = true;
33
34// Resize
35void test02()
36{
37  vector<int> v(10, 17);
38  v.reserve(20);
39
40  vector<int>::iterator before = v.begin() + 6;
41  vector<int>::iterator at = before + 1;
42  vector<int>::iterator after = at + 1;
43
44  // Shrink
45  v.resize(7);
46  VERIFY(before._M_dereferenceable());
47  VERIFY(at._M_singular());
48  VERIFY(after._M_singular());
49
50  // Grow, without reallocation
51  before = v.begin() + 6;
52  v.resize(17);
53  VERIFY(before._M_dereferenceable());
54
55  // Grow, with reallocation
56  v.resize(42);
57  VERIFY(before._M_singular());
58}
59
60int main()
61{
62  test02();
63  return 0;
64}
65