Index: sys/ufs/lfs/lfs_alloc.c
===================================================================
RCS file: /cvsroot/src/sys/ufs/lfs/lfs_alloc.c,v
retrieving revision 1.138
diff -u -r1.138 lfs_alloc.c
--- sys/ufs/lfs/lfs_alloc.c	17 Jan 2020 20:08:10 -0000	1.138
+++ sys/ufs/lfs/lfs_alloc.c	22 Feb 2020 00:09:11 -0000
@@ -95,16 +95,16 @@
 #define SET_BITMAP_FREE(F, I) do { \
 	DLOG((DLOG_ALLOC, "lfs: ino %d wrd %d bit %d set\n", (int)(I), 	\
 	     (int)((I) >> BMSHIFT), (int)((I) & BMMASK)));		\
-	(F)->lfs_ino_bitmap[(I) >> BMSHIFT] |= (1 << ((I) & BMMASK));	\
+	(F)->lfs_ino_bitmap[(I) >> BMSHIFT] |= (1U << ((I) & BMMASK));	\
 } while (0)
 #define CLR_BITMAP_FREE(F, I) do { \
 	DLOG((DLOG_ALLOC, "lfs: ino %d wrd %d bit %d clr\n", (int)(I), 	\
 	     (int)((I) >> BMSHIFT), (int)((I) & BMMASK)));		\
-	(F)->lfs_ino_bitmap[(I) >> BMSHIFT] &= ~(1 << ((I) & BMMASK));	\
+	(F)->lfs_ino_bitmap[(I) >> BMSHIFT] &= ~(1U << ((I) & BMMASK));	\
 } while(0)
 
 #define ISSET_BITMAP_FREE(F, I) \
-	((F)->lfs_ino_bitmap[(I) >> BMSHIFT] & (1 << ((I) & BMMASK)))
+	((F)->lfs_ino_bitmap[(I) >> BMSHIFT] & (1U << ((I) & BMMASK)))
 
 /*
  * Add a new block to the Ifile, to accommodate future file creations.