1 #!/usr/sbin/dtrace -ws
2 /*
3  * CDDL HEADER START
4  *
5  * The contents of this file are subject to the terms of the
6  * Common Development and Distribution License (the "License").
7  * You may not use this file except in compliance with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 
23 /*
24  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
25  * Use is subject to license terms.
26  */
27 
28 #pragma ident	"%Z%%M%	%I%	%E% SMI"
29 
30 /*
31  * ASSERTION:
32  * Destructive actions may never be speculative.
33  *
34  * SECTION: Speculative Tracing/Using a Speculation
35  * SECTION: dtrace(1M) Utility/ -w option
36  *
37  */
38 #pragma D option quiet
39 
40 char a[2];
41 void *buf;
42 uintptr_t addr;
43 size_t nbytes;
44 BEGIN
45 {
46 	self->i = 0;
47 	addr = (uintptr_t) &a[0];
48 	nbytes = 10;
49 	var = speculation();
50 }
51 
52 BEGIN
53 {
54 	speculate(var);
55 	printf("Speculation ID: %d", var);
56 	self->i++;
57 	copyout(buf, addr, nbytes);
58 }
59 
60 BEGIN
61 {
62 	printf("This test should not have compiled\n");
63 	exit(0);
64 }
65 
66 ERROR
67 {
68 	exit(0);
69 }
70