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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/12790-2.cc
1 // Copyright (C) 2003-2018 Free Software Foundation, Inc.
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 3, 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 COPYING3. If not see
16 // <http://www.gnu.org/licenses/>.
18 // 27.8.1.4 Overridden virtual functions
20 // { dg-require-fileio "" }
24 #include <testsuite_hooks.h>
25 #include <testsuite_character.h>
31 using __gnu_test::pod_uchar
;
32 typedef basic_filebuf
<pod_uchar
>::traits_type traits_type
;
34 const char* name
= "tmp_seekoff_12790";
36 locale
loc(locale::classic(),
37 new codecvt
<traits_type::char_type
, char,
38 traits_type::state_type
>);
40 basic_filebuf
<pod_uchar
> fb
;
43 fb
.open(name
, ios_base::out
);
44 fb
.sputc(pod_uchar::from
<char>(0xff));
45 fb
.sputc(pod_uchar::from
<char>(0));
46 fb
.sputc(pod_uchar::from
<char>(0));
47 fb
.sputc(pod_uchar::from
<char>('a'));
48 fb
.sputc(pod_uchar::from
<char>('a'));
49 fb
.sputc(pod_uchar::from
<char>('a'));
50 fb
.sputc(pod_uchar::from
<char>('a'));
53 fb
.open(name
, ios_base::in
);
58 // Check that seekoff resets the state when seeking to beginning.
59 traits_type::pos_type pos
= fb
.pubseekoff(0, ios_base::beg
);
60 VERIFY( pos
!= traits_type::pos_type(traits_type::off_type(-1)) );
62 traits_type::int_type c
= fb
.sbumpc();
63 VERIFY( c
!= traits_type::eof() );
64 VERIFY( traits_type::eq(traits_type::to_char_type(c
),
65 pod_uchar::from
<char>(0xff)) );
72 VERIFY( c
!= traits_type::eof() );
73 VERIFY( traits_type::eq(traits_type::to_char_type(c
),
74 pod_uchar::from
<char>('a')) );
76 VERIFY( c
== traits_type::eof() );