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Re: [basic-improvements] try/finally support for c/c++
On 06-Nov-2002, Richard Henderson <rth@redhat.com> wrote:
> longjmp pretty much bypasses all the logic one would care to
> ask about. I would say that such would have to be undefined. There
> is mention in the IA-64 psABI docs of a separate longjmp_unwind
> function that _is_ EH aware, but that's the exception not the rule.
> So leaving a try block via longjmp is going to have to be undefined.
Undefined behaviour is pretty drastic. Would it be sufficient to just
make it implementation-defined whether or not longjmp() invokes cleanups
(i.e. destructors and finally blocks)?
--
Fergus Henderson <fjh@cs.mu.oz.au> | "I have always known that the pursuit
The University of Melbourne | of excellence is a lethal habit"
WWW: <http://www.cs.mu.oz.au/~fjh> | -- the last words of T. S. Garp.