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1 | // 2004-11-29 Paolo Carlini <pcarlini@suse.de> | |
2 | ||
3 | // Copyright (C) 2004-2020 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 | |
32 | void test01() | |
33 | { | |
34 | using namespace std; | |
35 | ||
36 | typedef string::size_type size_type; | |
37 | ||
38 | #if _GLIBCXX_USE_CXX11_ABI | |
39 | // Can't shrink below small string size. | |
40 | const size_type minsize = string().capacity() + 1; | |
41 | #else | |
42 | // Exact shrink-to-size and shrink-to-fit | |
43 | const size_type minsize = 2 << 0; | |
44 | #endif | |
45 | const size_type maxsize = 2 << MAX_SIZE; | |
46 | for (size_type i = minsize; i <= maxsize; i *= 2) | |
47 | { | |
48 | string str(i, 'x'); | |
49 | str.reserve(3 * i); | |
50 | ||
51 | str.reserve(2 * i); | |
52 | VERIFY( str.capacity() == 2 * i ); | |
53 | ||
54 | str.reserve(); | |
55 | VERIFY( str.capacity() == i ); | |
56 | } | |
57 | } | |
58 | ||
59 | int main() | |
60 | { | |
61 | test01(); | |
62 | return 0; | |
63 | } |