GNU bug report logs - #9318
23.3.50; The first call of encode-coding-region() returns wrong result on on Windows

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From: Chong Yidong <cyd <at> stupidchicken.com>
To: Kazuhiro Ito <kzhr <at> d1.dion.ne.jp>
Cc: 9318 <at> debbugs.gnu.org
Subject: bug#9318: 23.3.50; The first call of encode-coding-region() returns wrong result
Date: Sat, 20 Aug 2011 17:26:04 -0400

Kazuhiro Ito <kzhr <at> d1.dion.ne.jp> writes:

>> When I start Emacs and evaluate the below code, unexpected result returns.
>
>> (let ((func (lambda ()
>> 	      (with-temp-buffer
>> 		(mapc 'insert '(166 25339))
>> 		(encode-coding-region (point-min) (point-max) 'ctext-unix)
>> 		(buffer-string)))))
>>   (cons (funcall func)
>> 	(funcall func)))
>> -> ("¦拻^@^@^@^@^@^@^@^@^@^@" . "^[$(D\"C^[$(H*f^[(B")
>
>> car of the result is not constant.
>
> I noticed this problem is not Windows specific.  I confirmed that it
> is reproducible in Emacs 23.3.1 (build by pkgsrc) on NetBSD/amd64 via
> SSH from remote host.  But it doesn't occur on openSUSE 11.3.

Could you run Emacs under a debugger, trigger the crash, and provide a
backtrace?  (You will need to have compiled Emacs with debugging
symbols.)

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