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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/27_io/basic_filebuf/close/char/3.cc
1 // 2001-05-21 Benjamin Kosnik <bkoz@redhat.com>
3 // Copyright (C) 2001-2013 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
23 #include <testsuite_hooks.h>
25 // @require@ %-*.tst %-*.txt
26 // @diff@ %-*.tst %*.txt
28 // NB: This test assumes that _M_buf_size == 40, and not the usual
29 // buffer_size length of BUFSIZ (8192), so that overflow/underflow can be
30 // simulated a bit more readily.
31 // NRB (Nota Really Bene): setting it to 40 breaks the test, as intended.
32 const int buffer_size
= 8192;
33 //const int buffer_size = 40;
35 const char name_01
[] = "filebuf_virtuals-1.txt"; // file with data in it
36 const char name_02
[] = "filebuf_virtuals-2.txt"; // empty file, need to create
37 const char name_03
[] = "filebuf_virtuals-3.txt"; // empty file, need to create
39 class derived_filebuf
: public std::filebuf
43 set_size(int_type __size
) { _M_buf_size
= __size
; }
46 derived_filebuf fb_01
; // in
47 derived_filebuf fb_02
; // out
48 derived_filebuf fb_03
; // in | out
50 // Initialize filebufs to be the same size regardless of platform.
53 fb_01
.set_size(buffer_size
);
54 fb_02
.set_size(buffer_size
);
55 fb_03
.set_size(buffer_size
);
58 // Test overloaded virtual functions.
61 typedef std::filebuf::int_type int_type
;
62 typedef std::filebuf::traits_type traits_type
;
63 typedef std::filebuf::pos_type pos_type
;
64 typedef std::filebuf::off_type off_type
;
65 typedef size_t size_type
;
67 bool test
__attribute__((unused
)) = true;
70 fb_01
.open(name_01
, std::ios_base::in
);
71 fb_02
.open(name_02
, std::ios_base::out
| std::ios_base::trunc
);
72 fb_03
.open(name_03
, std::ios_base::out
| std::ios_base::in
| std::ios_base::trunc
);
74 // NB Have to close these suckers. . .
75 // filebuf_type* close()
79 VERIFY( !fb_01
.is_open() );
80 VERIFY( !fb_02
.is_open() );
81 VERIFY( !fb_03
.is_open() );