Author: ed
Date: Sun Jun 9 08:28:23 2013
New Revision: 251566
URL: http://svnweb.freebsd.org/changeset/base/251566
Log:
Fix the way atomic_is_lock_free() is defined for Clang.
When using Clang atomics, atomic types are not placed in a structure.
There is thus no reason why we should get the __val member.
Modified:
head/sys/sys/stdatomic.h
Modified: head/sys/sys/stdatomic.h
==============================================================================
--- head/sys/sys/stdatomic.h Sun Jun 9 08:06:26 2013 (r251565)
+++ head/sys/sys/stdatomic.h Sun Jun 9 08:28:23 2013 (r251566)
@@ -156,7 +156,10 @@ enum memory_order {
* 7.17.5 Lock-free property.
*/
-#if defined(__CLANG_ATOMICS) || defined(__GNUC_ATOMICS)
+#if defined(__CLANG_ATOMICS)
+#define atomic_is_lock_free(obj) \
+ __atomic_is_lock_free(sizeof(*(obj)), obj)
+#elif defined(__GNUC_ATOMICS)
#define atomic_is_lock_free(obj) \
__atomic_is_lock_free(sizeof((obj)->__val), &(obj)->__val)
#else
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