Index: lib/libc/net/getservent.c
===================================================================
--- lib/libc/net/getservent.c
+++ lib/libc/net/getservent.c
@@ -235,7 +235,7 @@
 		return (NS_RETURN);
 	}
 	aliases = (char **)_ALIGN(&buffer[resultbuflen + 1]);
-	aliases_size = (buffer + bufsize - (char *)aliases) / sizeof(char *);
+	aliases_size = buffer + bufsize - ((char *)aliases / sizeof(char *));
 	if (aliases_size < 1) {
 		*errnop = ERANGE;
 		return (NS_RETURN);
Index: lib/libc/rpc/getrpcent.c
===================================================================
--- lib/libc/rpc/getrpcent.c
+++ lib/libc/rpc/getrpcent.c
@@ -518,8 +518,7 @@
 		}
 
 		aliases=(char **)_ALIGN(&buffer[resultbuflen+2]);
-		aliases_size = (buffer + bufsize - (char *)aliases) /
-			sizeof(char *);
+		aliases_size = buffer + bufsize - ((char *)aliases / sizeof(char *));
 		if (aliases_size < 1) {
 			*errnop = ERANGE;
 			rv = NS_RETURN;