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Correct the definition of CIRCLEQ_EMPTY. It would give a false positive

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if the queue contained only one element.

Submitted by:	Greg Ansley <gja@ansley.com>
This commit is contained in:
Justin T. Gibbs 1997-11-02 19:41:16 +00:00
parent 81e5344479
commit 69d83be037
1 changed files with 2 additions and 2 deletions
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4
sys/sys/queue.h
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@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)queue.h 8.5 (Berkeley) 8/20/94
* $Id: queue.h,v 1.17 1997/08/25 20:21:54 phk Exp $
* $Id: queue.h,v 1.18 1997/09/21 22:09:20 gibbs Exp $
*/
#ifndef _SYS_QUEUE_H_
@ -389,7 +389,7 @@ struct { \
/*
* Circular queue functions.
*/
#define CIRCLEQ_EMPTY(head) ((head)->cqh_first == (head)->cqh_last)
#define CIRCLEQ_EMPTY(head) ((head)->cqh_first == (void *)(head))
#define CIRCLEQ_FIRST(head) ((head)->cqh_first)