| // Copyright (C) 2003 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 2, 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 COPYING. If not, write to the Free |
| // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
| // USA. |
| |
| // { dg-require-fileio "" } |
| |
| // 27.8.1.3 filebuf member functions |
| |
| #include <locale> |
| #include <fstream> |
| #include <testsuite_hooks.h> |
| |
| class Cvt : public std::codecvt<char, char, std::mbstate_t> |
| { |
| public: |
| mutable bool unshift_called; |
| |
| Cvt() |
| : unshift_called(false) |
| { } |
| |
| protected: |
| bool |
| do_always_noconv() const throw() |
| { return false; } |
| |
| int |
| do_encoding() const throw() |
| { return -1; } |
| |
| std::codecvt_base::result |
| do_unshift(std::mbstate_t&, char* to, char*, char*& to_next) const |
| { |
| unshift_called = true; |
| to_next = to; |
| return std::codecvt_base::ok; |
| } |
| }; |
| |
| // libstdc++/12790 |
| // basic_filebuf::close() should call codecvt::unshift() |
| void test01() |
| { |
| using namespace std; |
| |
| bool test __attribute__((unused)) = true; |
| const char* name = "tmp_close_12790"; |
| |
| Cvt* cvt = new Cvt; |
| locale loc(locale::classic(), cvt); |
| |
| filebuf fb; |
| fb.pubsetbuf(0, 0); |
| fb.pubimbue(loc); |
| |
| fb.open(name, ios_base::out); |
| fb.sputc('a'); |
| fb.in_avail(); // showmanyc() should have no effect on close(). |
| |
| VERIFY( !cvt->unshift_called ); |
| fb.close(); |
| VERIFY( cvt->unshift_called ); |
| } |
| |
| int main() |
| { |
| test01(); |
| return 0; |
| } |