1 // 2003-05-03 Petur Runolfsson <peturr02@ru.is>
2
3 // Copyright (C) 2003-2021 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 // 27.8.1.4 Overridden virtual functions
21
22 #include <locale>
23 #include <fstream>
24 #include <cctype>
25 #include <testsuite_hooks.h>
26
27 class Cvt_to_upper : public std::codecvt<char, char, std::mbstate_t>
28 {
29 typedef std::codecvt<char, char, std::mbstate_t> Base;
30
31 public:
Cvt_to_upper(std::size_t refs=0)32 explicit Cvt_to_upper(std::size_t refs = 0)
33 : Base(refs)
34 { }
35
36 protected:
37 virtual result
do_in(state_type &,const extern_type * from,const extern_type * from_end,const extern_type * & from_next,intern_type * to,intern_type * to_end,intern_type * & to_next) const38 do_in(state_type&,
39 const extern_type* from, const extern_type* from_end,
40 const extern_type*& from_next,
41 intern_type* to, intern_type* to_end,
42 intern_type*& to_next) const
43 {
44 while (from < from_end && to < to_end)
45 *to++ = std::toupper(*from++);
46
47 to_next = to;
48 from_next = from;
49 return from == from_end ? ok : partial;
50 }
51
52 virtual bool
do_always_noconv() const53 do_always_noconv() const throw()
54 {
55 return false;
56 }
57 };
58
59 // libstdc++/9027
test01()60 void test01()
61 {
62 using namespace std;
63
64 const char* name = "filebuf_virtuals-1.txt";
65 locale loc (locale::classic(), new Cvt_to_upper);
66
67 filebuf fbin;
68 fbin.pubimbue(loc);
69 fbin.open(name, ios_base::in);
70
71 int c;
72 while ((c = fbin.sbumpc()) != EOF)
73 {
74 VERIFY( !islower(c) );
75 }
76
77 fbin.close();
78 }
79
main()80 int main()
81 {
82 test01();
83 return 0;
84 }
85