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
|
// 2003-04-01 Benjamin Kosnik <bkoz@redhat.com>
// Copyright (C) 2003 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 2, 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 COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// 27.7.6 - Member functions [lib.stringstream.members]
#include <sstream>
#include <testsuite_hooks.h>
void
redirect_buffer(std::ios& stream, std::streambuf* new_buf)
{ stream.rdbuf(new_buf); }
std::streambuf*
active_buffer(std::ios& stream)
{ return stream.rdbuf(); }
// libstdc++/2832
void test02()
{
bool test __attribute__((unused)) = true;
const char* strlit01 = "fuck war";
const std::string str00;
const std::string str01(strlit01);
std::string str02;
std::stringbuf sbuf;
std::streambuf* pbasebuf0 = &sbuf;
std::stringstream sstrm1;
// derived rdbuf() always returns original streambuf, even though
// it's no longer associated with the stream.
std::stringbuf* const buf1 = sstrm1.rdbuf();
// base rdbuf() returns the currently associated streambuf
std::streambuf* pbasebuf1 = active_buffer(sstrm1);
redirect_buffer(sstrm1, &sbuf);
std::stringbuf* const buf2 = sstrm1.rdbuf();
std::streambuf* pbasebuf2 = active_buffer(sstrm1);
VERIFY( buf1 == buf2 );
VERIFY( pbasebuf1 != pbasebuf2 );
VERIFY( pbasebuf2 == pbasebuf0 );
// How confusing and non-intuitive is this?
// These semantics are a joke, a serious defect, and incredibly lame.
}
int main()
{
test02();
return 0;
}
|