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99dee823 | 1 | // Copyright (C) 2020-2021 Free Software Foundation, Inc. |
a0e4d7b4 TR |
2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
18 | // C++20 29.8.2.2 basic_stringbuf constructors [stringbuf.cons | |
19 | ||
20 | // { dg-options "-std=gnu++2a" } | |
21 | // { dg-do run { target c++2a } } | |
22 | // { dg-require-effective-target cxx11-abi } | |
23 | ||
24 | #include <sstream> | |
25 | #include <string> | |
26 | #include <testsuite_allocator.h> | |
27 | #include <testsuite_hooks.h> | |
28 | ||
29 | void | |
30 | test01() | |
31 | { | |
32 | std::istringstream::allocator_type a; | |
33 | std::istringstream stm(std::ios_base::in, a); | |
34 | } | |
35 | ||
432258be | 36 | auto const cstr = "This is a test string"; |
a0e4d7b4 TR |
37 | |
38 | void | |
39 | test02() | |
40 | { | |
41 | std::string s1(cstr); | |
42 | std::istringstream stm(std::move(s1)); | |
43 | VERIFY( s1.empty() ); | |
44 | ||
45 | std::string s2(cstr); | |
46 | VERIFY( stm.str() == s2 ); | |
47 | } | |
48 | ||
49 | void | |
50 | test03() | |
51 | { | |
52 | using alloc_type = __gnu_test::tracker_allocator<char>; | |
53 | using str_type = std::basic_string<char, std::char_traits<char>, alloc_type>; | |
54 | ||
55 | auto const mode = std::ios_base::in; | |
56 | str_type s1(cstr); | |
57 | ||
58 | { | |
59 | std::istringstream::allocator_type a; | |
60 | std::istringstream sbuf(s1, mode, a); | |
61 | std::string s2(cstr); | |
62 | VERIFY( sbuf.str() == s2 ); | |
63 | } | |
64 | ||
65 | { | |
66 | std::istringstream sbuf(s1, mode); | |
67 | std::string s2(cstr); | |
68 | VERIFY( sbuf.str() == s2 ); | |
69 | } | |
70 | ||
71 | { | |
72 | std::istringstream sbuf(s1); | |
73 | std::string s2(cstr); | |
74 | VERIFY( sbuf.str() == s2 ); | |
75 | } | |
76 | } | |
77 | ||
432258be JW |
78 | // A minimal allocator with no default constructor |
79 | template<typename T> | |
80 | struct NoDefaultCons : __gnu_test::SimpleAllocator<T> | |
81 | { | |
82 | using __gnu_test::SimpleAllocator<T>::SimpleAllocator; | |
83 | ||
84 | NoDefaultCons() = delete; | |
85 | ||
86 | NoDefaultCons(int) { } | |
87 | }; | |
88 | ||
89 | void | |
90 | test04() | |
91 | { | |
92 | using sstream = std::basic_istringstream<char, std::char_traits<char>, | |
93 | NoDefaultCons<char>>; | |
94 | ||
95 | NoDefaultCons<char> a(1); | |
96 | const std::string str(cstr); | |
97 | ||
98 | sstream ss1(str, a); | |
99 | VERIFY( ss1.str() == cstr ); | |
100 | VERIFY( ss1.get() == cstr[0] ); | |
101 | ||
102 | sstream ss2(str, std::ios::out, a); | |
103 | VERIFY( ss2.str() == cstr ); | |
104 | VERIFY( ss2.get() == cstr[0] ); | |
105 | ||
106 | sstream ss3(std::string(str), std::ios::out, a); | |
107 | VERIFY( ss3.str() == cstr ); | |
108 | VERIFY( ss3.get() == cstr[0] ); | |
109 | } | |
110 | ||
a0e4d7b4 TR |
111 | int |
112 | main() | |
113 | { | |
114 | test01(); | |
115 | test02(); | |
116 | test03(); | |
432258be | 117 | test04(); |
a0e4d7b4 | 118 | } |