1 // { dg-do run { target c++11 } }
3 // Copyright (C) 2015-2023 Free Software Foundation, Inc.
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)
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.
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/>.
20 // 22.3.3.2.3 Buffer conversions
24 #include <testsuite_hooks.h>
25 #include <testsuite_common_types.h>
27 template<typename Elem
>
28 struct cvt
: std::codecvt
<Elem
, char, std::mbstate_t> { };
30 template<typename Elem
>
31 using buf_conv
= std::wbuffer_convert
<cvt
<Elem
>, Elem
>;
38 #ifdef _GLIBCXX_USE_WCHAR_T
39 buf_conv
<wchar_t> buf
;
41 VERIFY( buf
.rdbuf() == nullptr );
42 VERIFY( buf
.rdbuf(&sbuf
) == nullptr );
43 VERIFY( buf
.rdbuf() == &sbuf
);
44 VERIFY( buf
.rdbuf(nullptr) == &sbuf
);
46 __gnu_test::implicitly_default_constructible test
;
47 test
.operator()<buf_conv
<wchar_t>>(); // P0935R0
54 buf_conv
<char> buf(&sbuf
); // noconv
57 ss
.std::ios::rdbuf(&buf
);
58 string input
= "King for a day...";
59 ss
<< input
<< std::flush
;
60 string output
= sbuf
.str();
61 VERIFY( input
== output
);
66 #ifdef _GLIBCXX_USE_WCHAR_T
68 buf_conv
<wchar_t> buf(&sbuf
);
70 std::wstringstream ss
;
71 ss
.std::wios::rdbuf(&buf
);
72 wstring input
= L
"Fool for a lifetime";
73 ss
<< input
<< std::flush
;
74 string output
= sbuf
.str();
75 VERIFY( output
== "Fool for a lifetime" );