Index: mman.h
===================================================================
RCS file: /cvsroot/src/sys/sys/mman.h,v
retrieving revision 1.54
diff -u -r1.54 mman.h
--- mman.h	4 Jul 2018 01:17:32 -0000	1.54
+++ mman.h	8 Jul 2018 20:07:47 -0000
@@ -106,7 +106,7 @@
  * Alignment (expressed in log2).  Must be >= log2(PAGE_SIZE) and
  * < # bits in a pointer (32 or 64).
  */
-#define	MAP_ALIGNED(n)		((unsigned int)(n) << MAP_ALIGNMENT_SHIFT)
+#define	MAP_ALIGNED(n)		(int)((unsigned int)(n) << MAP_ALIGNMENT_SHIFT)
 #define	MAP_ALIGNMENT_SHIFT	24
 #define	MAP_ALIGNMENT_MASK	MAP_ALIGNED(0xff)
 #define	MAP_ALIGNMENT_64KB	MAP_ALIGNED(16)	/* 2^16 */