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1 | // 1999-07-01 bkoz |
2 | ||
99dee823 | 3 | // Copyright (C) 1999-2021 Free Software Foundation, Inc. |
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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 | |
748086b7 | 8 | // Free Software Foundation; either version 3, or (at your option) |
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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 | |
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17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
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19 | |
20 | // 21.3.7.9 inserters and extractors | |
21 | ||
22 | // NB: This file is predicated on sstreams, istreams, and ostreams | |
23 | // working, not to mention other major details like char_traits, and | |
24 | // all of the string class. | |
25 | ||
26 | #include <string> | |
27 | #include <sstream> | |
28 | #include <testsuite_hooks.h> | |
29 | ||
30 | // istringstream/stringbuf extractor properly size buffer based on | |
31 | // actual, not allocated contents (string.size() vs. string.capacity()). | |
32 | // http://gcc.gnu.org/ml/libstdc++/1999-q4/msg00049.html | |
33 | void test06(void) | |
34 | { | |
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35 | typedef std::string::size_type size_type; |
36 | std::string str01("@silent"); | |
37 | size_type i01 = str01.size(); | |
38 | size_type i02 = str01.capacity(); | |
39 | str01.erase(0, 1); | |
40 | size_type i03 = str01.size(); | |
41 | size_type i04 = str01.capacity(); | |
42 | VERIFY( i01 - 1 == i03 ); | |
43 | VERIFY( i02 >= i04 ); | |
44 | ||
45 | std::istringstream is(str01); | |
46 | std::string str02; | |
47 | is >> str02 >> std::ws; | |
48 | size_type i05 = str02.size(); | |
49 | size_type i06 = str02.capacity(); | |
50 | VERIFY( i05 == i03 ); | |
51 | VERIFY( i06 <= i04 ); | |
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52 | } |
53 | ||
54 | int main() | |
55 | { | |
56 | test06(); | |
57 | return 0; | |
58 | } |