-// Copyright (C) 2001, 2002, 2003, 2005 Free Software Foundation, Inc.
+// { dg-require-mkfifo "" }
+
+// Copyright (C) 2001-2024 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)
+// 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,
// 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.
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
// 27.8.1.3 filebuf member functions
// @require@ %-*.tst %-*.txt
void test_06()
{
using namespace __gnu_test;
- bool test __attribute__((unused)) = true;
const char* name = "tmp_fifo2";
- semaphore s1, s2;
signal(SIGPIPE, SIG_IGN);
unlink(name);
- try_mkfifo(name, S_IRWXU);
+ mkfifo(name, S_IRWXU);
- if (!fork())
- {
- std::filebuf fbuf;
- fbuf.open(name, std::ios_base::in);
- fbuf.sgetc();
- s1.signal ();
- fbuf.close();
- s2.wait ();
- exit(0);
- }
-
std::filebuf fbuf;
+ // The use of ios_base::ate implies an attempt to seek on the file
+ // descriptor. The seek will fail. Thus, at the OS level, this
+ // call to "fbuf.open" will result in a call to "open" (which will
+ // succeed), a call to "lseek" (which will fail), and, finally, a
+ // call to "close" (which will succeed). Thus, after this call, the
+ // file should be closed.
std::filebuf* r = fbuf.open(name,
std::ios_base::in
| std::ios_base::out
| std::ios_base::ate);
- s1.wait ();
- VERIFY( !fbuf.is_open() );
- VERIFY( r == NULL );
- s2.signal ();
+ if (!r)
+ VERIFY( !fbuf.is_open() );
+ else
+ VERIFY( fbuf.is_open() );
}
int