svn commit: r321930 - head/sys/sys

[Konstantin Belousov]

Author: kib
Date: Wed Aug  2 14:54:54 2017
New Revision: 321930
URL: https://svnweb.freebsd.org/changeset/base/321930

Log:
  For makedev(), cast the minor argument to unsigned type explicitely,
  avoiding possible sign propagation.
  
  Submitted by:	hselasky

Modified:
  head/sys/sys/types.h

Modified: head/sys/sys/types.h
==============================================================================
--- head/sys/sys/types.h	Wed Aug  2 14:45:58 2017	(r321929)
+++ head/sys/sys/types.h	Wed Aug  2 14:54:54 2017	(r321930)
@@ -366,7 +366,7 @@ __bitcount64(__uint64_t _x)
 
 #define	major(x)	((int)((dev_t)(x) >> 32))	/* major number */
 #define	minor(x)	((int)((x) & 0xffffffff))	/* minor number */
-#define	makedev(x, y)	(((dev_t)(x) << 32) | (y))	/* create dev_t */
+#define	makedev(x, y)	(((dev_t)(x) << 32) | (unsigned)(y)) /* create dev_t */
 
 /*
  * These declarations belong elsewhere, but are repeated here and in