2 files changed, 12 insertions, 17 deletions
diff --git a/missing/strchr.c b/missing/strchr.c
index 886d70ede6..bebd7ba578 100644
--- a/missing/strchr.c
+++ b/missing/strchr.c
@@ -1,32 +1,28 @@
 /* public domain rewrite of strchr(3) and strrchr(3) */
 
 char *
-strchr(s, c)
-    char *s;
-    int c;
+strchr(const char *s, int c)
 {
-    if (c == 0) return s + strlen(s);
+    if (c == 0) return (char *)s + strlen(s);
     while (*s) {
 	if (*s == c)
-	    return s;
+	    return (char *)s;
 	s++;
     }
     return 0;
 }
 
 char *
-strrchr(s, c)
-    char *s;
-    int c;
+strrchr(const char *s, int c)
 {
-    char *save;
+    const char *save;
 
-    if (c == 0) return s + strlen(s);
+    if (c == 0) return (char *)s + strlen(s);
     save = 0;
     while (*s) {
 	if (*s == c)
 	    save = s;
 	s++;
     }
-    return save;
+    return (char *)save;
 }
diff --git a/missing/strstr.c b/missing/strstr.c
index 1673518f06..2e9c282fb1 100644
--- a/missing/strstr.c
+++ b/missing/strstr.c
@@ -1,20 +1,19 @@
 /* public domain rewrite of strstr(3) */
 
 char *
-strstr(haystack, needle)
-    char *haystack, *needle;
+strstr(const char *haystack, const char *needle)
 {
-    char *hend;
-    char *a, *b;
+    const char *hend;
+    const char *a, *b;
 
-    if (*needle == 0) return haystack;
+    if (*needle == 0) return (char *)haystack;
     hend = haystack + strlen(haystack) - strlen(needle) + 1;
     while (haystack < hend) {
 	if (*haystack == *needle) {
 	    a = haystack;
 	    b = needle;
 	    for (;;) {
-		if (*b == 0) return haystack;
+		if (*b == 0) return (char *)haystack;
 		if (*a++ != *b++) {
 		    break;
 		}