[webkit-dev] Stuck... again (Conserative GC)

Maciej Stachowiak mjs at apple.com
Sun Jun 19 21:45:43 PDT 2005

On Jun 12, 2005, at 9:33 AM, Justin Haygood wrote:

> Ouch, crash in markStackObjectsConservatively()
> The following two lines essentially cause the crash:
>  char **p = (char **)start;
>  char **e = (char **)end;
> start and end work, and according to the debugger have the correct  
> values.
> p and e also have correct values, BUT also the debugger has this to  
> say about them:
> p: expression can't be evaluated
> e: Bad Ptr

That's really weird. Are you still having this problem? I don't have  
access to a Windows box at the moment so I have no idea what would be  
wrong. Perhaps windows doesn't like the cast to a doubly indirect  
pointer for some reason. Or maybe it is trying to implicitly double- 
deference them in the debugger, which of course would not work since  
they point to spots on the stack that likely are not themselves valid  


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