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// Copyright (C) 2001 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.
// 27.8.1.3 filebuf member functions
// @require@ %-*.tst %-*.txt
// @diff@ %-*.tst %-*.txt
// various tests for filebuf::open() and filebuf::close() including
// the non-portable functionality in the libstdc++-v3 IO library
#include <iostream>
#include <fstream>
#include <unistd.h>
#include <signal.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <testsuite_hooks.h>
// verify that std::filebuf doesn't close files that it didn't open
// when using the following std::filebuf ctor:
//
// std::filebuf(__c_file_type* __f,
// ios_base::openmode __mode,
// int_type __s);
//
// thanks to "George T. Talbot" <george@moberg.com> for uncovering
// this bug/situation.
const char name_01[] = "filebuf_members-1.tst";
const char name_02[] = "filebuf_members-1.txt";
int
test_01()
{
bool test = true;
int close_num;
// read (ext)
FILE* f2 = fopen(name_01, "r");
VERIFY( f2 != NULL );
{
std::filebuf fb(f2, std::ios_base::in, 512);
}
close_num = fclose(f2);
VERIFY( close_num == 0 );
// read (standard)
FILE* f = fopen(name_01, "r");
VERIFY( f != NULL );
{
std::ifstream ifstream1(name_01);
VERIFY( ifstream1.is_open() );
std::ios_base::iostate st01 = ifstream1.rdstate();
VERIFY( st01 == std::ios_base::goodbit );
}
close_num = fclose(f);
VERIFY( close_num == 0 );
#ifdef DEBUG_ASSERT
assert(test);
#endif
return test;
}
int
test_02()
{
bool test = true;
int first_fd = ::open(name_01, O_RDONLY);
VERIFY( first_fd != -1 );
FILE* first_file = ::fdopen(first_fd, "r");
VERIFY( first_file != NULL );
std::filebuf fb (first_file, std::ios_base::in);
int second_fd = fb.fd();
test = first_fd == second_fd;
#ifdef DEBUG_ASSERT
assert(test);
#endif
return test;
}
// libstdc++/2913, libstdc++/4879
// John Fardo <jfardo@laurelnetworks.com>, Brad Garcia <garsh@attbi.com>
void
test_03()
{
signal(SIGPIPE, SIG_IGN);
if (0 != mkfifo("xxx", S_IRWXU))
{
std::cerr << "failed to creat fifo" << std::endl;
exit(-1);
}
int fval = fork();
if (fval == -1)
{
std::cerr << "failed to fork" << std::endl;
unlink("xxx");
exit(-1);
}
else if (fval == 0)
{
std::ifstream ifs("xxx");
sleep(1);
ifs.close();
exit(0);
}
std::ofstream ofs("xxx");
sleep(2);
ofs.put('t');
/*
* ISO/IED 14882:1998(E) 27.8.1.10.4
*
* void close();
*
* Effects: Calls rdbuf()->close() and, if that function fails
* (returns a null pointer), calls setstate(failbit)...
*/
ofs.close();
if (!(ofs.rdstate() & std::ios::failbit))
{
std::cerr << "fail bit was not set!" << std::endl;
unlink("xxx");
exit(-1);
}
unlink("xxx");
exit(0);
}
int
main()
{
test_01();
test_02();
test_03();
return 0;
}
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