Index: lib/libc/stdtime/strptime.c
===================================================================
--- lib/libc/stdtime/strptime.c	(revision 272441)
+++ lib/libc/stdtime/strptime.c	(working copy)
@@ -103,8 +103,6 @@
 
 	ptr = fmt;
 	while (*ptr != 0) {
-		if (*buf == 0)
-			break;
 
 		c = *ptr++;
 
@@ -123,7 +121,6 @@
 label:
 		c = *ptr++;
 		switch (c) {
-		case 0:
 		case '%':
 			if (*buf++ != '%')
 				return (NULL);
@@ -599,6 +596,9 @@
 			while (isspace_l((unsigned char)*buf, locale))
 				buf++;
 			break;
+
+		default:
+			return (NULL);
 		}
 	}