1// 2000-08-17 Benjamin Kosnik <bkoz@cygnus.com>
2
3// Copyright (C) 2000-2015 Free Software Foundation, Inc.
4//
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)
9// any later version.
10
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.
15
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/>.
19
20// 22.2.1.5 - Template class codecvt [lib.locale.codecvt]
21
22#include <locale>
23#include <cstring>
24#include <testsuite_hooks.h>
25
26// Need to explicitly set the state(mbstate_t) to zero.
27// How to do this is not specified by the ISO C99 standard, so we
28// might need to add some operators to make the intuiative case
29// work:
30//   w_codecvt::state_type state00;
31//   state00 = 0;
32// or, can use this explicit "C" initialization:
33//   w_codecvt::state_type state01 = {0, 0};
34// .. except Ulrich says: Use memset. Always use memset. Feel the force...
35void
36zero_state(std::mbstate_t& state)
37{ std::memset(&state, 0, sizeof(std::mbstate_t)); }
38
39// Required instantiation
40// codecvt<wchar_t, char, mbstate_t>
41void test01()
42{
43  using namespace std;
44  typedef codecvt<wchar_t, char, mbstate_t> 	w_codecvt;
45  typedef char					ext_type;
46
47  bool test __attribute__((unused)) = true;
48  const ext_type* 	e_lit = "black pearl jasmine tea";
49  int 			size = strlen(e_lit);
50
51  locale 		loc;
52  const w_codecvt* 	cvt = &use_facet<w_codecvt>(loc);
53
54  w_codecvt::state_type state04;
55  zero_state(state04);
56  int j = cvt->length(state04, e_lit, e_lit + size, 5);
57  VERIFY( j == 5 );
58}
59
60int main ()
61{
62  test01();
63  return 0;
64}
65