Re: C++ exceptions

Kevin O'Connor wrote:

>> DWORD* sp = (DWORD*)ContextRecord->Sp;
>>    *--sp = ContextRecord->Pc;
> [...]
> 
> Sp is the stack of the main code, and the exception handler writes to
> that stack space.  Are we guarenteed that if we longjmp back to the
> main code that it wont corrupt anything?  (In general, I wouldn't
> think it would be a problem because the stack grows down - but do we
> have a guarantee that gcc always decrements sp before using it?)
> 

I think we do.  Even 'alloca's are only "released" at function exit,
isn't it?

Cheers,
Pedro Alves


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