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Re: Re2: Crash when trying to load corrupt file with NSDictionary -initW


From: Roland Schwingel
Subject: Re: Re2: Crash when trying to load corrupt file with NSDictionary -initWithContentsOfFile:
Date: Thu, 30 Jun 2005 11:08:27 +0200
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.3) Gecko/20040910

Hi...

Richard Frith-Macdonald <richard@brainstorm.co.uk> wrote on 30.06.2005 10:34:27:
> > <roland.schwingel@onevision.de> wrote:>
> > Unfortunately it does not work and the reason is clear. With my corrupt file > > info->didUnique is set to 0 in initDeserializerInfo(), so the GSIArray is
> > also not initialized and calling GSIArrayCount(&info->array) accesses
> > uninitialized data. Access to the GSIArray should only be done after
> > checking the didUnique flag.
>
> Thanks ... I missed that the array could be uninitialised. Should be fixed > now to check both that the array is initialised and that the index into it
> is valid (and raise a different exception message in each case).

With one last small tweak it works now. I added a
break;
after the last else branch you added to terminate the ST_XREF case,
elsewise it would rush directly into the ST_CSTRING case which is
bad.

Thanks,

Roland





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