svn commit: r352250 - head/sys/sys

[Hans Petter Selasky]

Author: hselasky
Date: Thu Sep 12 15:57:49 2019
New Revision: 352250
URL: https://svnweb.freebsd.org/changeset/base/352250

Log:
  Fix for undefined behaviour.
  Left shift of 1 by 31 places cannot be represented in type 'int'.
  
  MFC after:	1 week
  Sponsored by:	Mellanox Technologies

Modified:
  head/sys/sys/refcount.h

Modified: head/sys/sys/refcount.h
==============================================================================
--- head/sys/sys/refcount.h	Thu Sep 12 15:50:14 2019	(r352249)
+++ head/sys/sys/refcount.h	Thu Sep 12 15:57:49 2019	(r352250)
@@ -39,7 +39,7 @@
 #define	KASSERT(exp, msg)	/* */
 #endif
 
-#define	REFCOUNT_WAITER			(1 << 31) /* Refcount has waiter. */
+#define	REFCOUNT_WAITER			(1U << 31) /* Refcount has waiter. */
 #define	REFCOUNT_SATURATION_VALUE	(3U << 29)
 
 #define	REFCOUNT_SATURATED(val)		(((val) & (1U << 30)) != 0)