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- // { dg-do run { target c++11 } }
- // Copyright (C) 2015-2022 Free Software Foundation, Inc.
- //
- // This file is part of the GNU ISO C++ Library. This library is free
- // software; you can redistribute it and/or modify it under the
- // terms of the GNU General Public License as published by the
- // Free Software Foundation; either version 3, or (at your option)
- // any later version.
- // This library is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU General Public License for more details.
- // You should have received a copy of the GNU General Public License along
- // with this library; see the file COPYING3. If not see
- // <http://www.gnu.org/licenses/>.
- // 22.3.3.2.3 Buffer conversions
- #include <locale>
- #include <sstream>
- #include <testsuite_hooks.h>
- #include <testsuite_common_types.h>
- template<typename Elem>
- struct cvt : std::codecvt<Elem, char, std::mbstate_t> { };
- template<typename Elem>
- using buf_conv = std::wbuffer_convert<cvt<Elem>, Elem>;
- using std::string;
- using std::wstring;
- void test01()
- {
- #ifdef _GLIBCXX_USE_WCHAR_T
- buf_conv<wchar_t> buf;
- std::stringbuf sbuf;
- VERIFY( buf.rdbuf() == nullptr );
- VERIFY( buf.rdbuf(&sbuf) == nullptr );
- VERIFY( buf.rdbuf() == &sbuf );
- VERIFY( buf.rdbuf(nullptr) == &sbuf );
- __gnu_test::implicitly_default_constructible test;
- test.operator()<buf_conv<wchar_t>>(); // P0935R0
- #endif
- }
- void test02()
- {
- std::stringbuf sbuf;
- buf_conv<char> buf(&sbuf); // noconv
- std::stringstream ss;
- ss.std::ios::rdbuf(&buf);
- string input = "King for a day...";
- ss << input << std::flush;
- string output = sbuf.str();
- VERIFY( input == output );
- }
- void test03()
- {
- #ifdef _GLIBCXX_USE_WCHAR_T
- std::stringbuf sbuf;
- buf_conv<wchar_t> buf(&sbuf);
- std::wstringstream ss;
- ss.std::wios::rdbuf(&buf);
- wstring input = L"Fool for a lifetime";
- ss << input << std::flush;
- string output = sbuf.str();
- VERIFY( output == "Fool for a lifetime" );
- #endif
- }
- int main()
- {
- test01();
- test02();
- test03();
- }
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