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weird problem with executable + dll

Started by marfr960 Sep 4, 2006 at 8:27 AM 3 replies 350+ views

Original Post

Sep 4, 2006 at 8:27 AM

Hi all, I am stuck with a very weird problem. I coded a graphical tool composed by an executable and one DLL in MS VC++ 6.0 under Windows XP. In the DLL there are some functions and the resources (text files) used by the executable. Now, if I launch the debug version of the executable (linked with the debug version of the DLL) from outside the IDE, it runs fine. If I launch the release version of the executable (linked with the release version of the DLL), the application does not work properly, like if it does not find the resources. Ok, I realized that there is some bug in the release version of the DLL, infact if I link the release executable with the debug version of the DLL it works fine. The big weird problem is that if I launch the release executable + release DLL form _within_ the IDE, it works! As far as I know, there should be not a difference between the executable launched by windows explorer and the executable launched from within the IDE. Does anybody has some clue of the reason because this is happening? I am losing a good amount of my sanity for this... thanks a lot, marfr960

marfr960

Sep 4, 2006 at 8:41 AM

I agree that it could be something related with the path.

However, if the executable would not find the DLL, it would give me a run-time error (like "DLL not found").

I also checked if the executable is able to reach the resources into the release DLL and it seems that the resources are correctly accessed...

TheAdmiral

Sep 4, 2006 at 10:35 AM

If your problem isn't fixed yet, try setting up a JIT debugger (MSVS works if you're using that, though I'd recommend OllyDbg). This way, you can attach a debugger at the moment an unhandled exception occurs.

Regards
Admiral

marfr960

Sep 4, 2006 at 10:43 AM

Thanks a lot for the suggestion!
I did not know about the existence of OllyDbg, it seems an interesting product.

I will try it out as soon as I can.

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