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List:       kde-windows
Subject:    Re: [PATCH] kdecore crashes LoadLibrary calls
From:       Ralf Habacker <ralf.habacker () freenet ! de>
Date:       2009-03-31 20:11:52
Message-ID: 49D27908.5060300 () freenet ! de
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Ralf Habacker schrieb:
> Patrick Spendrin schrieb:
>> Hi,
>>
>> I have a small patch here which fixes a problem I recently got aware of:
>> if you try to make a regsvr32 kdecore.dll it will fail saying that
>> LoadLibrary was not achieved (simply try it). The correct error message
>> would have been a missing entrypoint for DllRegisterServer though.
>> After searching for quite a while I found the problem:
>> When you load kdecore linked to an executable, the image will be located
>> at the address 0x0040000. When you load kdecore directly via regsvr32,
>> the image will have the address 0x10000000 (0x1 0x0) instead.
>> When trying to read from the first one then you will obviously get a
>> "crash". As I am unable to find out where our image is (this is the
>> address of the HINSTANCE parameter in the DllMain) as the constructor of
>> the static class will be called before running the DllMain, I have now
>> changed it so that the code will be called from the DllMain with the
>> parameter.
>>
>> As this patch might change the behaviour of your debug output, please
>> check if it works for you | comment it.
>>   
> patch is committed.
reverted patch - some more tests with kde applications and this patch 
shows that the HINSTANCE parameter is now always 0x10000000, which let 
kdecore crashes :-(

Ralf

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