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1 | // 1999-05-11 bkoz |
2 | ||
7adcbafe | 3 | // Copyright (C) 1999-2022 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 | |
748086b7 JJ |
17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
b2dad0e3 | 19 | |
9a27acc3 | 20 | // { dg-options "-Wno-stringop-overflow -Wno-stringop-overread" } |
e864d395 | 21 | |
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22 | // 21.3.3 string capacity |
23 | ||
24 | #include <string> | |
1b716e90 | 25 | #include <cstring> |
fe413112 | 26 | #include <testsuite_hooks.h> |
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27 | |
28 | template<typename T> | |
29 | struct A { }; | |
30 | ||
31 | template<typename T> | |
32 | bool | |
8b5bc374 | 33 | operator==(const A<T>&, const A<T>&) { return true; } |
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34 | |
35 | template<typename T> | |
36 | bool | |
8b5bc374 | 37 | operator<(const A<T>&, const A<T>&) { return true; } |
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38 | |
39 | struct B { }; | |
40 | ||
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41 | // char_traits specialization |
42 | namespace std | |
43 | { | |
44 | template<> | |
45 | struct char_traits<A<B> > | |
46 | { | |
47 | typedef A<B> char_type; | |
48 | // Unsigned as wint_t in unsigned. | |
49 | typedef unsigned long int_type; | |
50 | typedef streampos pos_type; | |
51 | typedef streamoff off_type; | |
52 | typedef mbstate_t state_type; | |
53 | ||
54 | static void | |
55 | assign(char_type& __c1, const char_type& __c2) | |
56 | { __c1 = __c2; } | |
57 | ||
58 | static bool | |
59 | eq(const char_type& __c1, const char_type& __c2) | |
60 | { return __c1 == __c2; } | |
61 | ||
62 | static bool | |
63 | lt(const char_type& __c1, const char_type& __c2) | |
64 | { return __c1 < __c2; } | |
65 | ||
66 | static int | |
67 | compare(const char_type* __s1, const char_type* __s2, size_t __n) | |
68 | { | |
69 | for (size_t __i = 0; __i < __n; ++__i) | |
70 | if (!eq(__s1[__i], __s2[__i])) | |
71 | return lt(__s1[__i], __s2[__i]) ? -1 : 1; | |
72 | return 0; | |
73 | } | |
74 | ||
75 | static size_t | |
76 | length(const char_type* __s) | |
77 | { | |
78 | const char_type* __p = __s; | |
79 | while (__p) | |
80 | ++__p; | |
81 | return (__p - __s); | |
82 | } | |
83 | ||
84 | static const char_type* | |
85 | find(const char_type* __s, size_t __n, const char_type& __a) | |
86 | { | |
87 | for (const char_type* __p = __s; size_t(__p - __s) < __n; ++__p) | |
88 | if (*__p == __a) return __p; | |
89 | return 0; | |
90 | } | |
91 | ||
92 | static char_type* | |
93 | move(char_type* __s1, const char_type* __s2, size_t __n) | |
94 | { return (char_type*) memmove(__s1, __s2, __n * sizeof(char_type)); } | |
95 | ||
96 | static char_type* | |
97 | copy(char_type* __s1, const char_type* __s2, size_t __n) | |
98 | { return (char_type*) memcpy(__s1, __s2, __n * sizeof(char_type)); } | |
99 | ||
100 | static char_type* | |
101 | assign(char_type* __s, size_t __n, char_type __a) | |
102 | { | |
103 | for (char_type* __p = __s; __p < __s + __n; ++__p) | |
104 | assign(*__p, __a); | |
105 | return __s; | |
106 | } | |
107 | ||
108 | static char_type | |
8b5bc374 | 109 | to_char_type(const int_type&) |
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110 | { return char_type(); } |
111 | ||
112 | static int_type | |
8b5bc374 | 113 | to_int_type(const char_type&) { return int_type(); } |
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114 | |
115 | static bool | |
116 | eq_int_type(const int_type& __c1, const int_type& __c2) | |
117 | { return __c1 == __c2; } | |
118 | ||
119 | static int_type | |
120 | eof() { return static_cast<int_type>(-1); } | |
121 | ||
122 | static int_type | |
123 | not_eof(const int_type& __c) | |
124 | { return eq_int_type(__c, eof()) ? int_type(0) : __c; } | |
125 | }; | |
126 | } // namespace std | |
127 | ||
36ce7daa | 128 | void test01() |
b2dad0e3 | 129 | { |
61f1ed59 | 130 | // non POD types : resize, capacity, reserve |
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131 | std::basic_string< A<B> > str02; |
132 | typedef std::basic_string< A<B> >::size_type size_type_o; | |
133 | size_type_o sz03; | |
134 | size_type_o sz04; | |
135 | ||
136 | sz03 = str02.capacity(); | |
137 | str02.reserve(100); | |
138 | sz04 = str02.capacity(); | |
aa1b2f7d BV |
139 | VERIFY( sz04 >= sz03 ); |
140 | VERIFY( sz04 >= 100 ); | |
140cf935 | 141 | #if __cplusplus <= 201703L |
b2dad0e3 | 142 | str02.reserve(); |
34a2b755 | 143 | #else |
140cf935 | 144 | str02.shrink_to_fit(); // reserve is deprecated in C++20 |
34a2b755 | 145 | #endif |
140cf935 AL |
146 | sz03 = str02.capacity(); |
147 | VERIFY( sz03 < sz04 ); | |
148 | ||
149 | // P0966: reserve should not shrink | |
150 | str02.reserve(100); | |
151 | sz03 = str02.capacity(); | |
152 | str02.reserve(sz03 - 1); | |
153 | VERIFY( str02.capacity() == sz03 ); | |
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154 | |
155 | sz03 = str02.size() + 5; | |
156 | str02.resize(sz03); | |
157 | sz04 = str02.size(); | |
aa1b2f7d | 158 | VERIFY( sz03 == sz04 ); |
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159 | |
160 | sz03 = str02.size() - 5; | |
161 | str02.resize(sz03); | |
162 | sz04 = str02.size(); | |
aa1b2f7d | 163 | VERIFY( sz03 == sz04 ); |
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164 | |
165 | A<B> inst_obj; | |
166 | std::basic_string<A<B> > str07(30, inst_obj); | |
167 | std::basic_string<A<B> > str08 = str07; | |
168 | str07 = str08 + str07; | |
aa1b2f7d BV |
169 | VERIFY( str07.capacity() >= str07.size() ); |
170 | VERIFY( str08.capacity() >= str08.size() ); | |
b2dad0e3 | 171 | |
61f1ed59 PC |
172 | // non-POD types: size, length, max_size, clear(), empty() |
173 | bool b01 = str02.empty(); | |
aa1b2f7d | 174 | VERIFY( b01 == true ); |
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175 | sz03 = str02.size(); |
176 | sz04 = str02.length(); | |
aa1b2f7d | 177 | VERIFY( sz03 == sz04 ); |
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178 | str02.c_str(); |
179 | sz03 = str02.size(); | |
180 | sz04 = str02.length(); | |
aa1b2f7d | 181 | VERIFY( sz03 == sz04 ); |
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182 | |
183 | sz03 = str02.max_size(); | |
aa1b2f7d | 184 | VERIFY( sz03 >= sz04 ); |
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185 | |
186 | sz03 = str02.size(); | |
187 | str02.clear(); | |
188 | b01 = str02.empty(); | |
aa1b2f7d | 189 | VERIFY( b01 == true ); |
b2dad0e3 | 190 | sz04 = str02.size(); |
aa1b2f7d | 191 | VERIFY( sz03 >= sz04 ); |
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192 | } |
193 | ||
72c9b062 | 194 | #if !__GXX_WEAK__ |
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195 | // Explicitly instantiate for systems with no COMDAT or weak support. |
196 | template | |
1631cbcf | 197 | const std::basic_string< A<B> >::size_type |
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198 | std::basic_string< A<B> >::_Rep::_S_max_size; |
199 | ||
200 | template | |
1631cbcf | 201 | const A<B> |
0d223e3a | 202 | std::basic_string< A<B> >::_Rep::_S_terminal; |
72c9b062 | 203 | #endif |
dcc61724 | 204 | |
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205 | int main() |
206 | { | |
207 | test01(); | |
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208 | return 0; |
209 | } |