| // 2003-02-06 Petur Runolfsson <peturr02@ru.is> |
| |
| // Copyright (C) 2003 Free Software Foundation |
| // |
| // 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| // USA. |
| |
| // 22.2.1.5 - Template class codecvt [lib.locale.codecvt] |
| |
| #include <locale> |
| #include <testsuite_hooks.h> |
| |
| // Need to explicitly set the state(mbstate_t) to zero. |
| // How to do this is not specified by the ISO C99 standard, so we |
| // might need to add some operators to make the intuiative case |
| // work: |
| // w_codecvt::state_type state00; |
| // state00 = 0; |
| // or, can use this explicit "C" initialization: |
| // w_codecvt::state_type state01 = {0, 0}; |
| // .. except Ulrich says: Use memset. Always use memset. Feel the force... |
| void |
| zero_state(std::mbstate_t& state) |
| { std::memset(&state, 0, sizeof(std::mbstate_t)); } |
| |
| bool length_called = false; |
| |
| class length_codecvt : public std::codecvt<wchar_t, char, std::mbstate_t> |
| { |
| typedef std::codecvt<wchar_t, char, std::mbstate_t> w_codecvt; |
| |
| public: |
| // DR75: type of first argument of do_length is state_type& |
| virtual int do_length(state_type& state, const extern_type* from, |
| const extern_type* end, std::size_t max) const |
| { |
| length_called = true; |
| return w_codecvt::do_length(state, from, end, max); |
| } |
| }; |
| |
| // Required instantiation |
| // codecvt<wchar_t, char, mbstate_t> |
| // |
| // libstdc++/9224 |
| void test06() |
| { |
| using namespace std; |
| typedef codecvt<wchar_t, char, mbstate_t> w_codecvt; |
| typedef char ext_type; |
| |
| bool test __attribute__((unused)) = true; |
| const ext_type* e_lit = "black pearl jasmine tea"; |
| int size = strlen(e_lit); |
| |
| locale loc; |
| loc = locale(loc, new length_codecvt); |
| const w_codecvt* cvt = &use_facet<w_codecvt>(loc); |
| |
| w_codecvt::state_type state04; |
| zero_state(state04); |
| length_called = false; |
| cvt->length(state04, e_lit, e_lit + size, 5); |
| VERIFY( length_called ); |
| } |
| |
| int main () |
| { |
| test06(); |
| return 0; |
| } |