1 // 2003-02-06 Petur Runolfsson <peturr02@ru.is>
2
3 // Copyright (C) 2003-2018 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...
35 void
zero_state(std::mbstate_t & state)36 zero_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
test06()44 void 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 const ext_type* e_lit = "black pearl jasmine tea";
54 const ext_type* efrom_next;
55 const int_type* i_lit = L"black pearl jasmine tea";
56 size_t size = strlen(e_lit);
57 int_type* i_arr = new int_type[size + 1];
58 int_type* i_ref = new int_type[size + 1];
59 wmemset(i_arr, static_cast<wchar_t>(0xdeadbeef), size + 1);
60 wmemset(i_ref, static_cast<wchar_t>(0xdeadbeef), size + 1);
61 int_type* ito_next;
62
63 locale loc;
64 const w_codecvt* cvt = &use_facet<w_codecvt>(loc);
65
66 // in
67 w_codecvt::state_type state01;
68 zero_state(state01);
69 result r1 = cvt->in(state01, e_lit, e_lit + size, efrom_next,
70 i_arr, i_arr + 1, ito_next);
71 VERIFY( r1 == codecvt_base::partial );
72 VERIFY( efrom_next == e_lit + 1 );
73 VERIFY( ito_next == i_arr + 1 );
74 VERIFY( !int_traits::compare(i_arr, i_lit, 1) );
75 VERIFY( !int_traits::compare(ito_next, i_ref, size) );
76
77 delete [] i_arr;
78 delete [] i_ref;
79 }
80
main()81 int main ()
82 {
83 test06();
84 return 0;
85 }
86