svn commit: r254785 - releng/9.2/include

[Ed Maste]

Author: emaste
Date: Sat Aug 24 13:58:17 2013
New Revision: 254785
URL: http://svnweb.freebsd.org/changeset/base/254785

Log:
  MF9 r254783: Correct implementation of atomic_flag_test_and_set
  
  Approved by:	re

Modified:
  releng/9.2/include/stdatomic.h
Directory Properties:
  releng/9.2/include/   (props changed)

Modified: releng/9.2/include/stdatomic.h
==============================================================================
--- releng/9.2/include/stdatomic.h	Sat Aug 24 13:54:56 2013	(r254784)
+++ releng/9.2/include/stdatomic.h	Sat Aug 24 13:58:17 2013	(r254785)
@@ -322,7 +322,7 @@ typedef atomic_bool			atomic_flag;
 #define	atomic_flag_clear_explicit(object, order)			\
 	atomic_store_explicit(object, 0, order)
 #define	atomic_flag_test_and_set_explicit(object, order)		\
-	atomic_compare_exchange_strong_explicit(object, 0, 1, order, order)
+	atomic_exchange_explicit(object, 1, order)
 
 #define	atomic_flag_clear(object)					\
 	atomic_flag_clear_explicit(object, memory_order_seq_cst)