glibc/stdio-common/tst-fileno.c
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2018-01-01 00:32:25 +00:00

41 lines
1.2 KiB
C

/* Copyright (C) 1994-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
static int
check (const char *name, FILE *stream, int fd)
{
int sfd = fileno (stream);
printf ("(fileno (%s) = %d) %c= %d\n", name, sfd,
sfd == fd ? '=' : '!', fd);
return sfd != fd;
}
static int
do_test (void)
{
return (check ("stdin", stdin, STDIN_FILENO) ||
check ("stdout", stdout, STDOUT_FILENO) ||
check ("stderr", stderr, STDERR_FILENO));
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"