--- Revision 343337616435
+++ Revision 333238386631
@@ -21,7 +21,8 @@
          * O_DIRECTORY. Opening with O_RDONLY, without O_DIRECTORY succeeds for both
          * regular files and directories.
          */
-        fd = open(argv[1], O_WRONLY);
+        fd = open(argv[1], O_WRONLY | O_DIRECTORY);
+        /* fd = open(argv[1], O_RDONLY); */
         if (fd == -1) {
                 printf("open error %d: %s\n", errno, strerror(errno));
         } else {