compiler.h: add () in ACCESS_ONCE()

Protect x in ACCESS_ONCE macro.

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

diff --git a/urcu/compiler.h b/urcu/compiler.h
index 5b7bb305b2de83b1828171f506d7241d3c692d03..ce19c74764de7c82c5c8dbb06e2ddd214027c5f8 100644 (file)
--- a/urcu/compiler.h
+++ b/urcu/compiler.h
@@ -37,7 +37,7 @@
  * use is to mediate communication between process-level code and irq/NMI
  * handlers, all running on the same CPU.
  */
-#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&x)
+#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x))
 
 #ifndef max
 #define max(a,b) ((a)>(b)?(a):(b))