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 #include <signal.h>
28 #include <stdlib.h>
29 #include <unistd.h>
30
31 /*
32 * The canonical name should be 'go' since we prefer symbol names with fewer
33 * leading underscores.
34 */
35
36 extern int a;
37
38 int help(void);
39 int go(void);
40
41 int a = 100;
42
43 int
help(void)44 help(void)
45 {
46 return (a);
47 }
48
49 int
go(void)50 go(void)
51 {
52 return (help() + 1);
53 }
54
55 static void
handle(int sig __unused)56 handle(int sig __unused)
57 {
58 go();
59 exit(0);
60 }
61
62 int
main(void)63 main(void)
64 {
65 (void) signal(SIGUSR1, handle);
66 for (;;)
67 getpid();
68 }
69