diff -ru source/src/xz/file_io.c source-new/src/xz/file_io.c
--- source/src/xz/file_io.c	2016-12-30 03:13:57.000000000 -0800
+++ source-new/src/xz/file_io.c	2017-08-08 12:49:15.225290972 -0700
@@ -351,7 +351,7 @@
 io_copy_attrs(const file_pair *pair)
 {
 	// Skip chown and chmod on Windows.
-#ifndef TUKLIB_DOSLIKE
+#if 0
 	// This function is more tricky than you may think at first.
 	// Blindly copying permissions may permit users to access the
 	// destination file who didn't have permission to access the