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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/27_io/basic_filebuf/seekpos/char/2-in.cc
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1 // 2001-05-21 Benjamin Kosnik <bkoz@redhat.com>
3 // Copyright (C) 2001-2014 Free Software Foundation, Inc.
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)
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.
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/>.
20 // 27.8.1.4 Overridden virtual functions
22 // { dg-require-fileio "" }
25 #include <testsuite_hooks.h>
26 #include <testsuite_io.h>
28 // @require@ %-*.tst %-*.txt
29 // @diff@ %-*.tst %*.txt
31 const char name_01
[] = "seekpos.txt"; // file with data in it
36 using namespace __gnu_test
;
38 typedef filebuf::int_type int_type
;
39 typedef filebuf::pos_type pos_type
;
40 typedef filebuf::off_type off_type
;
41 typedef filebuf::traits_type traits_type
;
43 bool test
__attribute__((unused
)) = true;
49 pos_type
pt_1(off_type(-1));
50 pos_type
pt_2(off_type(0));
56 // pubseekpos(pos_type sp, ios_base::openmode)
57 // alters the stream position to sp
61 constraint_filebuf fb
;
63 fb
.open(name_01
, ios_base::in
);
64 VERIFY( fb
.unbuffered() );
67 pt_1
= fb
.pubseekoff(78, ios_base::beg
);
68 off_1
= off_type(pt_1
);
70 c1
= fb
.snextc(); //current in pointer +1
74 pt_3
= fb
.pubseekoff(0, ios_base::cur
);
76 c2
= fb
.sputc('\n'); //test current out pointer
77 pt_3
= fb
.pubseekoff(0, ios_base::cur
);
80 fb
.pubsync(); //resets pointers
81 pt_2
= fb
.pubseekpos(pt_1
);
82 off_2
= off_type(pt_2
);
83 VERIFY( off_1
== off_2
);
84 c3
= fb
.snextc(); //current in pointer +1
85 VERIFY( c2
== traits_type::eof() );
89 pt_1
= fb
.pubseekoff(0, ios_base::end
);
90 off_1
= off_type(pt_1
);
91 VERIFY( off_1
> off_2
);
92 fb
.sputn("\nof the wonderful things he does!!\nok", 37);
94 VERIFY( fb
.unbuffered() );
96 VERIFY( !fb
.is_open() );