Merge branch 'master' of git://openvswitch.org/openvswitch

[sliver-openvswitch.git] / lib / util.h

diff --git a/lib/util.h b/lib/util.h
index 2159594..0db41be 100644 (file)
--- a/lib/util.h
+++ b/lib/util.h
@@ -189,9 +189,13 @@ is_pow2(uintmax_t x)
  * that that OBJECT points to, assigns the address of the outer object to
  * OBJECT, which must be an lvalue.
  *
- * Evaluates to 1. */
+ * Evaluates to (void) 0 as the result is not to be used. */
 #define ASSIGN_CONTAINER(OBJECT, POINTER, MEMBER) \
-    ((OBJECT) = OBJECT_CONTAINING(POINTER, OBJECT, MEMBER), 1)
+    ((OBJECT) = OBJECT_CONTAINING(POINTER, OBJECT, MEMBER), (void) 0)
+
+/* Given ATTR, and TYPE, cast the ATTR to TYPE by first casting ATTR to
+ * (void *). This is to suppress the alignment warning issued by clang. */
+#define ALIGNED_CAST(TYPE, ATTR) ((TYPE) (void *) (ATTR))
 
 #ifdef  __cplusplus
 extern "C" {