/* Treat unmatching pathspec elements as errors */
        if (pathspec.nr && error_unmatch)
-               ps_matched = xcalloc(1, pathspec.nr);
+               ps_matched = xcalloc(pathspec.nr, 1);
 
        if ((dir.flags & DIR_SHOW_IGNORED) && !exc_given)
                die("ls-files --ignored needs some exclude pattern");