tst.weak2.c revision 313485 
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29#include <signal.h>
30#include <stdlib.h>
31#include <unistd.h>
32
33/*
34 * The canonical name should be 'go' since we prefer symbol names with fewer
35 * leading underscores.
36 */
37
38#pragma weak _go = go
39
40static int
41go(int a)
42{
43	return (a + 1);
44}
45
46static void
47handle(int sig)
48{
49	_go(1);
50	exit(0);
51}
52
53int
54main(int argc, char **argv)
55{
56	(void) signal(SIGUSR1, handle);
57	for (;;)
58		getpid();
59}
60