usr/src/cmd/dtrace/test/tst/common/bitfields/tst.BitFieldPromotion.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
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 /*
  30  * ASSERTION: Bit-field will be automatically promoted to the next largest
  31  * integer type for use in any expression and then the value assigned will
  32  * warp around the maximum number assignable to the data type.
  33  *
  34  * SECTION: Structs and Unions/Bit-Fields
  35  */
  36
  37 #pragma D option quiet
  38
  39 struct bitRecord{
  40         int a : 1;
  41         int b : 15;
  42         int c : 31;
  43 } var;
  44
  45 BEGIN
  46 {
  47         var.a = 256;
  48         var.b = 65536;
  49         var.c = 4294967296;
  50
  51         printf("bitRecord.a: %d\nbitRecord.b: %d\nbitRecord.c: %d\n",
  52         var.a, var.b, var.c);
  53         exit(0);
  54 }
  55
  56 END
  57 /(0 != var.a) || (0 != var.b) || (0 != var.c)/
  58 {
  59         exit(1);
  60 }