1// 2004-11-29  Paolo Carlini  <pcarlini@suse.de>
2
3// Copyright (C) 2004, 2009 Free Software Foundation
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// 21.3.3 string capacity
21
22#include <string>
23#include <testsuite_hooks.h>
24
25// libstdc++/18654
26void test01()
27{
28  using namespace std;
29  bool test __attribute__((unused)) = true;
30
31  typedef wstring::size_type size_type;
32
33  // Our current implementation provides exact shrink-to-size
34  // and shrink-to-fit (in the future, maybe this will change
35  // for short strings).
36  const size_type minsize = 2 << 0;
37  const size_type maxsize = 2 << 20;
38  for (size_type i = minsize; i <= maxsize; i *= 2)
39    {
40      wstring str(i, L'x');
41      str.reserve(3 * i);
42
43      str.reserve(2 * i);
44      VERIFY( str.capacity() == 2 * i );
45
46      str.reserve();
47      VERIFY( str.capacity() == i );
48    }
49}
50
51int main()
52{
53  test01();
54  return 0;
55}
56