GNU bug report logs - #10953
Potential logical bug in readtokens.c

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Xu Zhongxing <xu_zhong_xing <at> 163.com>
Subject: bug#10953: closed (Re: bug#10953: Potential logical bug in
 readtokens.c)
Date: Wed, 07 Mar 2012 19:59:02 +0000

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Your bug report

#10953: Potential logical bug in readtokens.c

which was filed against the coreutils package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 10953 <at> debbugs.gnu.org.

-- 
10953: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=10953
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Jim Meyering <jim <at> meyering.net>
Cc: Xu Zhongxing <xu_zhong_xing <at> 163.com>, 10953-done <at> debbugs.gnu.org
Subject: Re: bug#10953: Potential logical bug in readtokens.c
Date: Wed, 07 Mar 2012 11:56:48 -0800

On 03/07/2012 11:52 AM, Jim Meyering wrote:
> Here's a proposed readtokens test module:

I took a quick look, and it looks fine, thanks.

The bug's fixed now, so I'm marking it as 'done'.

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From: Xu Zhongxing <xu_zhong_xing <at> 163.com>
To: bug-coreutils <at> gnu.org
Subject: Potential logical bug in readtokens.c
Date: Tue, 06 Mar 2012 13:58:59 +0800

Hi,

I think I found a potential bug. But I am not sure about it. It looks
real from the code.

For coreutils 8.15, in file readtokens.c, function readtoken()

If delim is NULL, and saved_delim is not NULL, then the condition on
line 75 is not satisfied, but the condition on line 79 is satisfied.

In this case, there could be NULL pointer deference for delim[i] in line 84.


- Zhongxing Xu

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