blob: de7a371c1c40f80b4fa53495144f5365e6da80eb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
// 2003-09-22 Petur Runolfsson <peturr02@ru.is>
// Copyright (C) 2003-2022 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// 27.6.2.6 Unformatted output functions
//
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// DR 60. What is a formatted input function?
// basic_ostream::flush() does not behave as an unformatted output function.
// But wait ...
// 581. flush() not unformatted function
// So now basic_ostream::flush() *is* an unformatted output function.
#include <ostream>
#include <testsuite_hooks.h>
#include <testsuite_io.h>
void
test01()
{
std::ostream os(0);
VERIFY( os.bad() );
// Nothing should happen if os.rdbuf() is null. No sentry is constructed.
os.flush();
VERIFY( os.rdstate() == std::ios_base::badbit ); // no failbit
os.exceptions(std::ios_base::failbit);
os.flush();
}
void test02()
{
__gnu_test::sync_streambuf buf;
std::ostream os(&buf);
__gnu_test::sync_streambuf buf_tie;
std::ostream os_tie(&buf_tie);
// A sentry should be constructed so os.tie()->flush() should be called.
os.tie(&os_tie);
os.flush();
VERIFY( os.good() );
VERIFY( buf.sync_called() );
VERIFY( buf_tie.sync_called() );
}
void
test03()
{
__gnu_test::sync_streambuf buf;
std::ostream os(&buf);
__gnu_test::sync_streambuf buf_tie;
std::ostream os_tie(&buf_tie);
os.tie(&os_tie);
// os.rdbuf()->pubsync() should not be called if !os.good().
os.setstate(std::ios_base::eofbit);
os.flush();
VERIFY( os.rdstate() & std::ios_base::eofbit );
VERIFY( !buf.sync_called() );
VERIFY( !buf_tie.sync_called() );
}
int main()
{
test01();
test02();
test03();
}
|
