Re: [BLACKBOX] AW: [BLACKBOX] Illegal Memory Access with Windows 7

From: [at]} <Robert>
Date: Mon, 22 Jul 2013 22:26:05 +0200

Thanks

I am on a pedal biking holiday in Croatia, but will look at this when I return.

Regards
Robert Campbell


Romiras <romiras{([at]})nowhere.xy


Hi, everyone.


It looks that I found the way how to cause bug mentioned above. For this purpose I used small GC benchmark for D language run-time and adapted it for Component Pascal with some modifications.

I tested on Windows XP with 2 GB, Windows 8 with 4 GB and in Linux/Wine with 4 GB. On all of these machine I reproduced a bug.

If I use patched version of module Kernel by user luowy from September 2012, a bug didn't reproduced for me.


Please compile and run an encoded module TestGCAlloc1 attached below:

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 --- end of encoding ---




2013/7/11 Campbell, Robert (Selex ES, UK) <robert.d.campbell{([at]})nowhere.xy


        Chris
        
        Thanks for this - you and Helmut are so much more organised than me!
        
        Marc's email contains updated versions of
         - Dev/Mod/Cpc486.odc
        - System/Mod/Kernel.odc
         & instructions on how to install these files.
        
        Luowy's email contains a later update to Kernel.odc.
        
        
        There is a problem with Cpc486. The problem involves mixing INTEGERs & LONGINTs, and has been discussed here more than once.
        The fix is to add one line; this fix was provided by Louwy on 19-Dec-2011 (give or take a day or two!).
        
        
        I have just installed Marc's version of Cpc486 + Louwy's INTEGER fix, and Louwy's version of Kernel.
        
        
        This has certainly helped the Window's 7 memory problem; I have not used it enough yet to know if it is now reliable, but will
        report on that later.
        
        
        Please Oms, is it possible to update the BlackBox page with a version containing a consistent set of known critical compiler fixes?
        I appreciate there is no resource to incorporate all the 'nice-to-haves', but a buggy compiler with no easy-to-find, well-documented,
         way to obtain and apply critical patches is disappointing.
        You said in August last year "..testing a few corrections we made in the kernel and in the compiler. If they turn out to be good, we will release
        a new version of BlackBox shortly thereafter."
        
        
        
        
        Thanks, Robert
        





        -----Original Message-----
        From: BlackBox [mailto:BLACKBOX{([at]})nowhere.xy
        Sent: 11 July 2013 13:56
        To: BLACKBOX{([at]})nowhere.xy
        Subject: Re: [BLACKBOX] AW: [BLACKBOX] Illegal Memory Access with Windows 7
        
        
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         This message has originated outside your organisation,
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              Keep this in mind if you answer this message.
        


> -----Original Message-----
        > From: BlackBox [mailto:BLACKBOX{([at]})nowhere.xy
        > Robert (Selex ES, UK)
        > Sent: Thursday, 11 July 2013 6:22 PM
        > To: BLACKBOX{([at]})nowhere.xy
        > Subject: Re: [BLACKBOX] AW: [BLACKBOX] Illegal Memory Access with Windows
        > 7
        >
        > Does the current copy of BlackBox on the Oms site have the latest patches,
        > or can someone else remember what the final recommendation was? Precisely
        > what files should have been updated? My current copy of BlackBox.exe is
        > dated 8-Sept-2008. I suspect that the patch should have updated this.
        >

        
        Robert,
        
        Marc Frei sent an email to this mailing list with a patch attached on 30 Aug
        2012.
        
        Luowy followed this up with another modification on 6 Sep 2013 after a
        problem with the initial fix
        was reported by Romiras on 3 Sep 2012.
        
        I have sent copies of the relevant emails to you,
        
        Regards,
        Chris
        
        Chris Burrows
        http://www.cfbsoftware.com
        
        
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Received on Mon Jul 22 2013 - 22:26:05 UTC

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