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1 | // 2004-11-29 Paolo Carlini <pcarlini@suse.de> |
2 | ||
7adcbafe | 3 | // Copyright (C) 2004-2022 Free Software Foundation, Inc. |
d1a7222c PC |
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) |
d1a7222c PC |
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 | |
748086b7 JJ |
17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
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19 | |
20 | // 21.3.3 string capacity | |
21 | ||
01f4c821 SE |
22 | // { dg-options "-DMAX_SIZE=16" { target simulator } } |
23 | ||
24 | #ifndef MAX_SIZE | |
25 | #define MAX_SIZE 20 | |
26 | #endif | |
27 | ||
d1a7222c PC |
28 | #include <string> |
29 | #include <testsuite_hooks.h> | |
30 | ||
31 | // libstdc++/18654 | |
32 | void test01() | |
33 | { | |
34 | using namespace std; | |
d1a7222c PC |
35 | |
36 | typedef wstring::size_type size_type; | |
37 | ||
34a2b755 JW |
38 | #if _GLIBCXX_USE_CXX11_ABI |
39 | // Can't shrink below small string size. | |
230b4ede | 40 | const size_type minsize = wstring().capacity() + 1; |
34a2b755 JW |
41 | #else |
42 | // Exact shrink-to-size and shrink-to-fit | |
4f70f9d2 | 43 | const size_type minsize = 2 << 0; |
34a2b755 | 44 | #endif |
01f4c821 | 45 | const size_type maxsize = 2 << MAX_SIZE; |
4f70f9d2 | 46 | for (size_type i = minsize; i <= maxsize; i *= 2) |
d1a7222c PC |
47 | { |
48 | wstring str(i, L'x'); | |
49 | str.reserve(3 * i); | |
140cf935 AL |
50 | const size_type cap = str.capacity(); |
51 | VERIFY( cap >= 3 * i ); | |
d1a7222c PC |
52 | |
53 | str.reserve(2 * i); | |
140cf935 | 54 | VERIFY( str.capacity() == cap ); |
d1a7222c | 55 | |
140cf935 | 56 | #if __cplusplus <= 201703L |
d1a7222c | 57 | str.reserve(); |
140cf935 AL |
58 | #else |
59 | str.shrink_to_fit(); // reserve is deprecated in C++20 | |
60 | #endif | |
d1a7222c PC |
61 | VERIFY( str.capacity() == i ); |
62 | } | |
63 | } | |
64 | ||
65 | int main() | |
66 | { | |
67 | test01(); | |
68 | return 0; | |
69 | } |