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From: Andy Little (andy_at_[hidden])
Date: 2006-03-09 05:26:07

> Andy Little wrote
"Martin Bonner" wrote
> ----Original Message----
> From: boost-bounces_at_[hidden]
> [mailto:boost-bounces_at_[hidden]] On Behalf Of Andy Little Sent:
> 09 March 2006 08:09 To: boost_at_[hidden]
> Subject: Re: [boost] [bitfield] More portable implementation available
> inthevault
>> "Emile Cormier" wrote
>>> in
> =bitfield&
>> Unfortunately my unzipper wont unzip it. Just says "unknown
>> compression
>> algorithm" or some such.
>> regards
>> Andy Little
> Curious. Have you tried downloading it again?

Yes. it still says unknown compression algorithm.

> I have just opened it with WinZip 8.0 and it worked fine

When I'm feeling lazy I use the so-called Windows Extraction Wizard

Select your file, Right Click and select "Extract All". That comes up with
"unknown compression format."
For big files the Wizards incredibly slow so I use PKZip 4.0 (PKZip having
invented the format AFAIK).

However PKZip crashes on this file. Comes up in the debugger with "Unhandled
exception at 0x0043c90d in pkzipw.exe: 0xC0000005: Access violation reading
location 0x43435542."

My guess is that somebody has extended the original pkzip format and made that
the default when compressing files, for whatever reason I dont know, or maybe
the spec has been modified recently. Anyway I have had a couple of these files
which dont seem to follow the original spec in the last couple of weeks and I
can do nothing with them whatsoever except to delete them I'm afraid as they
dont seem to be backward compatible with the original spec.

Andy Little

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