[SDL] Random crash : really need help from experienced Mac OSX programmer

[Frank Becker]

manutoo wrote:
> Hello,
>
> I just finished to port 2 of my games to Mac OSX from Windows/DirectX/D3D,
> using SDL v1.2.12 + SDL_image v1.2.6 + SDL_mixer v1.2.8, with OpenGL for
> display.
> Unfortunately, both games get random crashes, sometimes just at start or
> after a few minutes, sometimes after a hour, sometimes never. Unfortunately,
> on my system, it seems to be never, so it's not easy for me to debug and
> find the cause.
>
> I gathered a few crash reports I got here :
> http://www.managames.com/crashreports.html
>
> It seems the crash occures from the Cocoa event system, both with
> nextEventMatchingMask & sendEvent, by wanting to reach an incorrect object
> address, and thus crashing in objc_msgSend (or objc_msgSend_rtp).
>
> My games are in C++, so I'm using only 2 obj-c sources (one being obj-c++),
> I put them here :
> http://www.managames.com/crash-mm-code.txt
> The 1st one is the SDL default file. I tried both with and without using a
> custom .Nib file.
> The 2nd one is mainly used to add a custom menu with a few entries, but one
> of my user reported me to get the bug, even after have disabled the creation
> of this menu.
>
> I got some few crash reports from within my code, and I already corrected
> them, but it didn't help to fix the random crashes...
>
> On my system, I used NSZombieEnabled, CFZombie, MallocGuardEdges &
> MallocScribble, without any result.
> I have my own buffer overrun detection system in debug mode, and it didn't
> catch anything.
>
> You can find my games here : http://www.managames.com
>
> Anyone would have some idea where and how I should head my bug research ?
>
>   
Double check you follow the memory management rules:
http://developer.apple.com/documentation/Cocoa/Conceptual/MemoryMgmt/Tasks/MemoryManagementRules.html

The following two releases in GetOsxLanguage are bad:

	[pPreferredLang release];
	[pLanguages release];

Cheers,
Frank.

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