Reverse Lexical Order

[H. S. Teoh]

On Mon, Jul 15, 2013 at 08:59:44PM -0400, Jonathan M Davis wrote:
> On Monday, July 15, 2013 14:48:08 Manfred Nowak wrote:
> > Jonathan M Davis wrote:
> > > gotos in such a context seem like a bit
> > > of a nightmare to me though.
> > 
> > I did realize this nightmare. Therefore the assurance in the docs
> > is probably true only in the absence within the scope of at least
> > gotos to targets within the scope.
> 
> Well, I'd have to study exactly how goto works to say how exactly it
> would interact with stuff like try-catch. I've pretty much only used
> goto with case statements and loops and haven't spent the time trying
> to sort out all of its idiosyncracies. I guess that I should add that
> to be my todo list.
[...]

My understanding is that goto translates directly to a jump in assembly,
so jumping in/out of blocks with declarations or stuff that needs
cleanups should immediately raise red flags. Of course, the compiler may
do something intelligent by inserting implicit stack pointer adjustments
and/or cleanup blocks, but I wouldn't count on it unless the language
spec explicitly requires so.


T

-- 
I am Ohm of Borg. Resistance is voltage over current.