tests: don't assume fd 99 is closed * tests/test-accept.c, tests/test-accept4.c, tests/test-bind.c: * tests/test-close.c, tests/test-connect.c, tests/test-dprintf.c: * tests/test-dup.c, tests/test-dup2.c, tests/test-faccessat.c: * tests/test-fchdir.c, tests/test-fchmod.c, tests/test-fchmodat.c: * tests/test-fchown.c, tests/test-fchownat.c, tests/test-fclose.c: * tests/test-fdatasync.c, tests/test-fdopen.c, tests/test-fdopendir.c: * tests/test-fflush.c, tests/test-fgetc.c, tests/test-fputc.c: * tests/test-fread.c, tests/test-freopen.c, tests/test-fseeko4.c: * tests/test-fstat.c, tests/test-fstatat.c, tests/test-fsync.c: * tests/test-ftello4.c, tests/test-ftruncate.c, tests/test-futimens.h: * tests/test-fwrite.c, tests/test-getpeername.c: * tests/test-getsockname.c, tests/test-getsockopt.c: * tests/test-grantpt.c, tests/test-ioctl.c, tests/test-isatty.c: * tests/test-linkat.c, tests/test-listen.c, tests/test-lseek.c: * tests/test-mkdirat.c, tests/test-mkfifoat.c, tests/test-openat.c: * tests/test-pread.c, tests/test-pwrite.c, tests/test-read.c: * tests/test-readlinkat.c, tests/test-recv.c, tests/test-recvfrom.c: * tests/test-renameat.c, tests/test-select.h, tests/test-send.c: * tests/test-sendto.c, tests/test-setsockopt.c, tests/test-shutdown.c: * tests/test-symlinkat.c, tests/test-ttyname_r.c: * tests/test-unlinkat.c, tests/test-unlockpt.c: * tests/test-utimensat.c, tests/test-vdprintf.c, tests/test-write.c: Close file descriptor 99, instead of assuming it's already closed.

/* Test duplicating a file descriptor.
   Copyright (C) 2011-2013 Free Software Foundation, Inc.

   This program 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 of the License, or
   (at your option) any later version.

   This program 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 program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <config.h>

#include <unistd.h>

#include "signature.h"
SIGNATURE_CHECK (dup, int, (int));

#include <errno.h>

#include "macros.h"

int
main (void)
{
  /* Test behaviour for invalid file descriptors.  */
  {
    errno = 0;
    ASSERT (dup (-1) == -1);
    ASSERT (errno == EBADF);
  }
  {
    close (99);
    errno = 0;
    ASSERT (dup (99) == -1);
    ASSERT (errno == EBADF);
  }

  return 0;
}