[Toybox] [PATCH] Fix segfault in sed -e 'c\'

[Rob Landley]

On 03/07/2016 08:38 PM, Andy Chu wrote:
>> I applied your segfault fix, but I think I'll wait for somebody to show
>> something this part breaks?
> 
> Yeah it doesn't seem like something anyone should rely on, so I think
> it makes to do the simple fix first.
> 
>> Thanks for the fix. Did your fuzzer find anything else?
> 
> Not yet...  The sed -f input was literally the first thing I tried and
> that dropped out almost instantly.  I just tried fuzzing the grep
> expression and chmod mode but it didn't find anything.
> 
> I have a patch to main.c to allow afl-fuzz to fuzz arbitrary params
> (it works on a model of files, so sed -f was easy to fuzz, but other
> things require instrumentation).  If it can find a few more bugs that
> may be worth it.
> 
> BTW I didn't see the patch applied here?
> https://github.com/landley/toybox/commits/master

Sorry, I have a cold that's screwed up this whole week. I have work on
different machines I need to collate to upload.

(Eh, I'll just re-apply it on my netbook. :)

Rob

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