1// 1999-06-08 bkoz
2
3// Copyright (C) 1999, 2003, 2009 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 template class basic_string
21
22#include <string>
23#include <stdexcept>
24#include <testsuite_hooks.h>
25
26// Do a quick sanity check on known problems with element access and
27// ref-counted strings. These should all pass, regardless of the
28// underlying string implementation, of course.
29bool test01(void)
30{
31  bool test __attribute__((unused)) = true;
32  typedef std::string::size_type csize_type;
33  typedef std::string::iterator siterator;
34  typedef std::string::reverse_iterator sriterator;
35  csize_type csz01, csz02;
36  siterator it1;
37  sriterator rit1;
38
39  std::string str01("montara beach, half moon bay");
40  const std::string str02("ocean beach, san francisco");
41  std::string str03;
42
43  // 21.3 p 5
44
45  // References, pointers, and iterators referring to the elements of
46  // a basic_string may be invalidated by the following uses of that
47  // basic_string object:
48
49  // ...
50
51  // Susequent to any of the above uses except the forms of insert()
52  // and erase() which return iterators, the first call to non-const
53  // member functions operator[](), at(), begin(), rbegin(), end(), or
54  // rend()
55
56  str03 = str01;
57  it1 = str01.begin();
58  *it1 = 'x';
59  VERIFY( str01[0] == 'x' );
60  VERIFY( str03[0] == 'm' );
61
62  str03 = str01;
63  csz01 = str01.size();
64  rit1 = str01.rbegin(); // NB: Pointing at one-past the end, so ...
65  *rit1 = 'z'; 		 // ... but it's taken care of here
66  VERIFY( str01[csz01 - 1] == 'z' );
67  VERIFY( str03[csz01 - 1] == 'y' );
68
69  str03 = str01;
70  csz01 = str01.size();
71  std::string::reference r1 = str01.at(csz01 - 2);
72  VERIFY( str03 == str01 );
73  r1 = 'd';
74  VERIFY( str01[csz01 - 2] == 'd' );
75  VERIFY( str03[csz01 - 2] == 'a' );
76
77  str03 = str01;
78  csz01 = str01.size();
79  std::string::reference r2 = str01[csz01 - 3];
80  VERIFY( str03 == str01 );
81  r2 = 'w';
82  VERIFY( str01[csz01 - 3] == 'w' );
83  VERIFY( str03[csz01 - 3] == 'b' );
84
85  str03 = str01;
86  csz02 = str01.size();
87  it1 = str01.end();
88  VERIFY( str03 == str01 );
89  --it1;
90  *it1 = 'q';
91  VERIFY( str01[csz02 - 1] == 'q' );
92  VERIFY( str03[csz02 - 1] == 'z' );
93
94  str03 = str01;
95  rit1 = str01.rend();
96  VERIFY( str03 == str01 );
97  --rit1;
98  *rit1 = 'p';
99  VERIFY( str01[0] == 'p' );
100  VERIFY( str03[0] == 'x' );
101
102  // need to also test for const begin/const end
103  return test;
104}
105
106int main()
107{
108  test01();
109  return 0;
110}
111