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1 | // 2003-02-06 Petur Runolfsson <peturr02@ru.is> |
2 | ||
1b716e90 | 3 | // Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation |
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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 2, 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 COPYING. If not, write to the Free | |
83f51799 | 18 | // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
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19 | // USA. |
20 | ||
21 | // 22.2.1.5 - Template class codecvt [lib.locale.codecvt] | |
22 | ||
23 | #include <locale> | |
1b716e90 | 24 | #include <cstring> |
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25 | #include <testsuite_hooks.h> |
26 | ||
27 | // Need to explicitly set the state(mbstate_t) to zero. | |
28 | // How to do this is not specified by the ISO C99 standard, so we | |
29 | // might need to add some operators to make the intuiative case | |
30 | // work: | |
31 | // w_codecvt::state_type state00; | |
32 | // state00 = 0; | |
33 | // or, can use this explicit "C" initialization: | |
34 | // w_codecvt::state_type state01 = {0, 0}; | |
35 | // .. except Ulrich says: Use memset. Always use memset. Feel the force... | |
36 | void | |
37 | zero_state(std::mbstate_t& state) | |
38 | { std::memset(&state, 0, sizeof(std::mbstate_t)); } | |
39 | ||
40 | bool length_called = false; | |
41 | ||
42 | class length_codecvt : public std::codecvt<wchar_t, char, std::mbstate_t> | |
43 | { | |
44 | typedef std::codecvt<wchar_t, char, std::mbstate_t> w_codecvt; | |
45 | ||
46 | public: | |
47 | // DR75: type of first argument of do_length is state_type& | |
48 | virtual int do_length(state_type& state, const extern_type* from, | |
49 | const extern_type* end, std::size_t max) const | |
50 | { | |
51 | length_called = true; | |
52 | return w_codecvt::do_length(state, from, end, max); | |
53 | } | |
54 | }; | |
55 | ||
56 | // Required instantiation | |
57 | // codecvt<wchar_t, char, mbstate_t> | |
58 | // | |
59 | // libstdc++/9224 | |
60 | void test06() | |
61 | { | |
62 | using namespace std; | |
63 | typedef codecvt<wchar_t, char, mbstate_t> w_codecvt; | |
64 | typedef char ext_type; | |
65 | ||
11f10e6b | 66 | bool test __attribute__((unused)) = true; |
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67 | const ext_type* e_lit = "black pearl jasmine tea"; |
68 | int size = strlen(e_lit); | |
69 | ||
70 | locale loc; | |
71 | loc = locale(loc, new length_codecvt); | |
72 | const w_codecvt* cvt = &use_facet<w_codecvt>(loc); | |
73 | ||
74 | w_codecvt::state_type state04; | |
75 | zero_state(state04); | |
76 | length_called = false; | |
77 | cvt->length(state04, e_lit, e_lit + size, 5); | |
78 | VERIFY( length_called ); | |
79 | } | |
80 | ||
81 | int main () | |
82 | { | |
83 | test06(); | |
84 | return 0; | |
85 | } |