ANS Forth:

	0 >in 2dup ! !

which leads to:

	$ gforth
	Gforth 0.7.0, Copyright (C) 1995-2008 Free Software Foundation, Inc.
	Gforth comes with ABSOLUTELY NO WARRANTY; for details type `license'
	Type `bye' to exit
	0 >in 2dup ! !                                          
	:1: Stack overflow
	0 >in 2dup >>>!<<< !
	Backtrace:
	$B71DF6EC r> 
	$B71D34A4 perform 
	$B71DD654 (search-wordlist) 
	$3 
	$0 
	$B71DD734 (vocfind) 
	$B71D34A4 perform 
	$B71D351C (search-wordlist) 
	$B71D3FF4 find-name 

In fact, the 2nd `!` is never executed.