diff --git a/sys/boot/common/misc.c b/sys/boot/common/misc.c
index f1a049194cef..c4c36ea9a4e8 100644
--- a/sys/boot/common/misc.c
+++ b/sys/boot/common/misc.c
@@ -42,7 +42,7 @@ unargv(int argc, char *argv[])
     int		i;
     char	*cp;
 
-    for (hlong = 0, i = 0, hlong = 0; i < argc; i++)
+    for (i = 0, hlong = 0; i < argc; i++)
 	hlong += strlen(argv[i]) + 2;
 
     if(hlong == 0)
diff --git a/usr.bin/rs/rs.c b/usr.bin/rs/rs.c
index df01c57d1b63..82aaa9aeefce 100644
--- a/usr.bin/rs/rs.c
+++ b/usr.bin/rs/rs.c
@@ -153,7 +153,6 @@ getfile(void)
 				p++;
 		}
 	ep = getptrs(elem);
-	p = curline;
 	do {
 		if (flags & ONEPERLINE) {
 			*ep = curline;
diff --git a/usr.bin/yacc/closure.c b/usr.bin/yacc/closure.c
index 24b1610cd13b..2124417f5c5d 100644
--- a/usr.bin/yacc/closure.c
+++ b/usr.bin/yacc/closure.c
@@ -142,7 +142,6 @@ set_first_derives()
 	    }
 	}
 
-	vrow += varsetsize;
 	rrow += rulesetsize;
     }
 
@@ -173,7 +172,6 @@ int n;
     int itemno;
 
     rulesetsize = WORDSIZE(nrules);
-    rsp = ruleset;
     rsend = ruleset + rulesetsize;
     for (rsp = ruleset; rsp < rsend; rsp++)
 	*rsp = 0;