1// 2003-02-06  Petur Runolfsson  <peturr02@ru.is>
2
3// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009 Free Software Foundation
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>
41//
42// Test handling of output buffer that is too small.
43// libstdc++/9247
44void test06()
45{
46  using namespace std;
47  typedef codecvt<wchar_t, char, mbstate_t> 	w_codecvt;
48  typedef codecvt_base::result			result;
49  typedef wchar_t				int_type;
50  typedef char					ext_type;
51  typedef char_traits<wchar_t>			int_traits;
52
53  bool test __attribute__((unused)) = true;
54  const ext_type* 	e_lit = "black pearl jasmine tea";
55  const ext_type*       efrom_next;
56  const int_type* 	i_lit = L"black pearl jasmine tea";
57  size_t 	       	size = strlen(e_lit);
58  int_type* 		i_arr = new int_type[size + 1];
59  int_type* 		i_ref = new int_type[size + 1];
60  wmemset(i_arr, static_cast<wchar_t>(0xdeadbeef), size + 1);
61  wmemset(i_ref, static_cast<wchar_t>(0xdeadbeef), size + 1);
62  int_type*		ito_next;
63
64  locale 		loc;
65  const w_codecvt* 	cvt = &use_facet<w_codecvt>(loc);
66
67  // in
68  w_codecvt::state_type state01;
69  zero_state(state01);
70  result r1 = cvt->in(state01, e_lit, e_lit + size, efrom_next,
71		      i_arr, i_arr + 1, ito_next);
72  VERIFY( r1 == codecvt_base::partial );
73  VERIFY( efrom_next == e_lit + 1 );
74  VERIFY( ito_next == i_arr + 1 );
75  VERIFY( !int_traits::compare(i_arr, i_lit, 1) );
76  VERIFY( !int_traits::compare(ito_next, i_ref, size) );
77
78  delete [] i_arr;
79  delete [] i_ref;
80}
81
82int main ()
83{
84  test06();
85  return 0;
86}
87