1// 2004-11-29  Paolo Carlini  <pcarlini@suse.de>
2
3// Copyright (C) 2004-2015 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// 21.3.3 string capacity
21
22// { dg-options "-DMAX_SIZE=16" { target simulator } }
23
24#ifndef MAX_SIZE
25#define MAX_SIZE 20
26#endif
27
28#include <string>
29#include <testsuite_hooks.h>
30
31// libstdc++/18654
32void test01()
33{
34  using namespace std;
35  bool test __attribute__((unused)) = true;
36
37  typedef wstring::size_type size_type;
38
39#if _GLIBCXX_USE_CXX11_ABI
40  // Can't shrink below small string size.
41  const size_type minsize = 2 << 1;
42#else
43  // Exact shrink-to-size and shrink-to-fit
44  const size_type minsize = 2 << 0;
45#endif
46  const size_type maxsize = 2 << MAX_SIZE;
47  for (size_type i = minsize; i <= maxsize; i *= 2)
48    {
49      wstring str(i, L'x');
50      str.reserve(3 * i);
51
52      str.reserve(2 * i);
53      VERIFY( str.capacity() == 2 * i );
54
55      str.reserve();
56      VERIFY( str.capacity() == i );
57    }
58}
59
60int main()
61{
62  test01();
63  return 0;
64}
65