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 #pragma ident	"%Z%%M%	%I%	%E% SMI"
27 
28 /*
29  * ASSERTION: offsetof can be used anywhere in a D program that an integer
30  * constant can be used.
31  *
32  * SECTION: Structs and Unions/Member Sizes and Offsets
33  *
34  * NOTES:
35  *
36  */
37 
38 #pragma D option quiet
39 
40 typedef struct record {
41 	char c;
42 	int x;
43 	int y;
44 } record_t;
45 
46 BEGIN
47 {
48 
49 	add = offsetof(record_t, c) + offsetof(record_t, x) +
50 	    offsetof(record_t, y);
51 	sub = offsetof(record_t, y) - offsetof(record_t, x);
52 	mul = offsetof(record_t, x) * offsetof(record_t, c);
53 	div = offsetof(record_t, y) / offsetof(record_t, x);
54 
55 	printf("offsetof(record_t, c) = %d\n", offsetof(record_t, c));
56 	printf("offsetof(record_t, x) = %d\n", offsetof(record_t, x));
57 	printf("offsetof(record_t, y) = %d\n", offsetof(record_t, y));
58 
59 	printf("Addition of offsets (c+x+y)= %d\n", add);
60 	printf("Subtraction of offsets (y-x)= %d\n", sub);
61 	printf("Multiplication of offsets (x*c) = %d\n", mul);
62 	printf("Division of offsets (y/x) = %d\n", div);
63 
64 	exit(0);
65 }
66 
67 END
68 /(8 != offsetof(record_t, y)) || (4 != offsetof(record_t, x)) ||
69     (0 != offsetof(record_t, c)) || (12 != add)  || (4 != sub) || (0 != mul)
70     || (2 != div)/
71 {
72 	exit(1);
73 }
74