usr/src/cmd/dtrace/test/tst/common/offsetof/tst.OffsetofUnion.d

   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:
  30  * Test invocation of offsetof() with a union type alias.
  31  *
  32  * SECTION: Structs and Unions/Member Sizes and Offsets
  33  *
  34  * NOTES:
  35  *
  36  */
  37
  38 #pragma D option quiet
  39
  40 union record {
  41         int x;
  42         int y;
  43         char c;
  44 };
  45
  46 BEGIN
  47 {
  48         printf("offsetof(record, x) = %d\n", offsetof(union D`record, x));
  49         printf("offsetof(record, y) = %d\n", offsetof(union D`record, y));
  50         printf("offsetof(record, c) = %d\n", offsetof(union D`record, c));
  51         exit(0);
  52 }
  53
  54 END
  55 /(0 != offsetof(union D`record, y)) && (0 != offsetof(union D`record, x)) &&
  56     (0 != offsetof(union D`record, c))/
  57 {
  58         exit(1);
  59 }