1 // Copyright (C) 2004 Free Software Foundation
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 2, or (at your option)
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING. If not, write to the Free
16 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19 // 27.6.1.3 unformatted input functions
20 // NB: ostream has a particular "seeks" category. Adopt this for istreams too.
21 // @require@ %-*.tst %-*.txt
22 // @diff@ %-*.tst %-*.txt
27 #include <testsuite_hooks.h>
32 typedef std::wistream::off_type off_type
;
34 bool test
__attribute__((unused
)) = true;
35 std::wistream::pos_type pos01
, pos02
, pos03
, pos04
, pos05
, pos06
;
36 std::ios_base::iostate state01
, state02
;
37 const char str_lit01
[] = "wistream_seeks-1.txt";
38 const char str_lit02
[] = "wistream_seeks-2.txt";
39 std::wifstream
if01(str_lit01
, std::ios_base::in
| std::ios_base::out
);
40 std::wifstream
if02(str_lit01
, std::ios_base::in
);
41 std::wifstream
if03(str_lit02
, std::ios_base::out
| std::ios_base::trunc
);
42 VERIFY( if01
.good() );
43 VERIFY( if02
.good() );
44 VERIFY( if03
.good() );
46 std::wistream
is01(if01
.rdbuf());
47 std::wistream
is02(if02
.rdbuf());
48 std::wistream
is03(if03
.rdbuf());
54 VERIFY( pos01
== pos02
);
59 VERIFY( pos03
== pos04
);
64 VERIFY( pos05
== pos06
);
67 // NB: see library issues list 136. It's the v-3 interp that seekg
68 // only sets the input buffer, or else istreams with buffers that
69 // have _M_mode == ios_base::out will fail to have consistency
70 // between seekg and tellg.
71 state01
= is01
.rdstate();
72 is01
.seekg(10, std::ios_base::cur
);
73 state02
= is01
.rdstate();
75 VERIFY( pos01
== pos02
+ off_type(10) );
76 VERIFY( state01
== state02
);
78 VERIFY( pos02
== pos01
);