3 files changed, 4 insertions, 2 deletions
diff --git a/lib/libc/string/memset.c b/lib/libc/string/memset.c
index 55cca11..afe5f96 100644
--- a/lib/libc/string/memset.c
+++ b/lib/libc/string/memset.c
@@ -68,7 +68,9 @@ memset(dst0, c0, length)
 #endif
 {
 	register size_t t;
+#ifndef BZERO
 	register u_int c;
+#endif
 	register u_char *dst;
 
 	dst = dst0;
diff --git a/lib/libc/string/strcat.c b/lib/libc/string/strcat.c
index 3436967..95dcd1d 100644
--- a/lib/libc/string/strcat.c
+++ b/lib/libc/string/strcat.c
@@ -45,6 +45,6 @@ strcat(s, append)
 	char *save = s;
 
 	for (; *s; ++s);
-	while (*s++ = *append++);
+	while ((*s++ = *append++));
 	return(save);
 }
diff --git a/lib/libc/string/strcpy.c b/lib/libc/string/strcpy.c
index d1791dd..c9b44b1 100644
--- a/lib/libc/string/strcpy.c
+++ b/lib/libc/string/strcpy.c
@@ -45,6 +45,6 @@ strcpy(to, from)
 {
 	char *save = to;
 
-	for (; *to = *from; ++from, ++to);
+	for (; (*to = *from); ++from, ++to);
 	return(save);
 }