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Date:	Sat, 7 Oct 2023 00:49:41 -0600
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Subject:	Re: Setup Ver 2.926 (64bit):can't file extract from
	qt5-webkit-debuginfo
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From:	Brian Inglis via Cygwin <cygwin AT cygwin DOT com>
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On 2023-10-05 11:41, ASSI via Cygwin wrote:
> ASSI via Cygwin writes:
>> I could reproduce that issue, no time yet to dig deeper.  It looks like
>> the decompressor loses track of where it is, then uses whatever data
>> comes after that to try and extract the next file (which obviously
>> doesn't look like it's expected to).
> 
> Both GNU tar and bsdtar (from libarchive) decompress the archive
> correctly, so that would allow you to install manually.  Looking at the
> file that produces the failure, it is quite a bit larger than 2GiB, so I
> think that this simply means that the canned tar extractor in setup.exe
> is just not large-file safe.

I hadn't realised that file was so large when decompressed: that definitely 
looks like a 32 bit signed overflow issue: changing the signed offset(s) or 
size(s) to unsigned, or size_t if larger, should eliminate future issues.

-- 
Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada

La perfection est atteinte                   Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer     but when there is no more to cut
                                 -- Antoine de Saint-Exupéry


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