Subject: bug#6988: 23.2; crash using compose-region under X

From: Chong Yidong <[email-masked]>
Date: Sun, 29 Jan 2012 01:47:06 +0800

I can still observe this crash on latest trunk.  Handa-san, could you
take a look?  Thanks.

Tor Kinlok <[email-masked]> writes:

> Starting a no-toolkit (ie ./configure --with-x-toolkit=no) emacs 23.2.1
> under X windows and then doing a compose-region on a null string results
> in a crash.  Something similar was reported by Johan Bockgård in 2006
> and a fix applied at that time:
>
> http://www.mail-archive.com/[email-masked]/msg05765.html
>
> Following the same procedure from the old report causes the same results:
>
>>$ emacs -Q
>> Insert
>>     (compose-region 1 2 "")
>> in the *scratch* buffer and evaluate it.
>> Emacs crashes during redisplay: