From: Paolo Bonzini <pbonzini@redhat.com>
Date: Mon, 1 Mar 2010 19:06:01 +0000 (-0500)
Subject: avoid multiple evaluation of STORE_SHARED argument
X-Git-Tag: v0.4.2~10
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=f152776dbd7d8cf072160d4d0229e1c3e4ea6f1c;p=userspace-rcu.git

avoid multiple evaluation of STORE_SHARED argument

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/urcu/system.h b/urcu/system.h
index e36a13b..0c3152f 100644
--- a/urcu/system.h
+++ b/urcu/system.h
@@ -46,9 +46,9 @@
  */
 #define STORE_SHARED(x, v)		\
 	({				\
-		_STORE_SHARED(x, v);	\
+		typeof(x) _v = _STORE_SHARED(x, v);	\
 		smp_wmc();		\
-		(v);			\
+		_v;			\
 	})
 
 #endif /* _URCU_SYSTEM_H */