rpc exception

Gregory M. Turner gmturner007 at ameritech.net
Thu May 1 01:58:38 CDT 2003


On Thursday 01 May 2003 01:42 am, Ove Kaaven wrote:
> tor, 01.05.2003 kl. 07.26 skrev Gregory M. Turner:
> > (b) if the exception code doesn't run, A() runs longjmp again, to
> > non-local goto /back/ into D(), using the second jmp_buf.  This returns
> > normally and would, I guess, expect to unwind the stack normally through
> > C(), B() and so on... (this is all ignoring the fact that flow-of-control
> > was interrupted by an exception, but for my purposes I don't think it
> > matters).
>
> This is not OK. Since the first setjmp releases all the stack frames
> between A and D, trying to later reclaim that released stack with
> another setjmp is doomed to unpredictable stack corruption.

was afraid of that... bummer.  well, back to the drawing board ;)  I guess 
this is how we ended up with the need for a function in the first place -- 
you (seem to) need "lambda" delayed execution capabilities that aren't easily 
achieved by a macro... :(

Say, Alexandre, would it be a possibility to just bake some magic into wpp for 
this?

-- 
"Security is mostly superstition. It does not exist in nature,
nor do the children of men as a whole experience it. Avoiding
danger is no safer in the long run than outright exposure. Life is
either a daring adventure, or nothing. To keep our faces toward
change and behave like free spirits in the presence of fate is
strength undefeatable." --Helen Keller

gmt





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