Sort the two lines of stderr from the

first `tar -v --listed-incremental'.  They would come out
reversed and provoke a test failure on a tmpfs
file system.

tests/listed02.at

@@ -1,7 +1,7 @@
 # Process this file with autom4te to create testsuite. -*- Autotest -*-
 
 # Test suite for GNU tar.
-# Copyright (C) 2004, 2005 Free Software Foundation, Inc.
+# Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -46,7 +46,11 @@ done
 
 sleep 1
 echo Creating main archive
-tar -c -v --listed-incremental=tart.incr1 -f archive.1 tart || exit 1
+tar -c -v --listed-incremental=tart.incr1 -f archive.1 tart 2> err || exit 1
+
+# The above prints two lines to stderr announcing the new directories c0 and c1.
+# Ensure that they appear in this script's stderr in sorted order.
+sort err 1>&2 2>/dev/null; rm -f err
 
 sleep 1
 echo Modifying filesystem