Re: [9fans] how to avoid a memset() optimization

[Tomas <psycho@pobox.com>]

On Tue, 19 Nov 2002 at 9:32am, presotto@plan9.bell-labs.com wrote:

> The exceptional style has its merits.  If C had a resonable
> multivalued return mechanism like alef or limbo, I think it
> would have been a better solution.
>
> There's no reason other than personal preference to not use the
> same model at user level, it's just a stack of long jmp
> variables.  However, I haven't found the need.  Return values
> seem to work just as well though they are much wordier.

I've been fantasizing about having some sort of atreturn()
functionality similar to atexit() to use in error handling (as
soon as a file is opened, do an atreturn() and specify that that
fd should be closed upon a "return -1;" but not otherwise, for
example).

Has anyone else been thinking in that direction? Does anyone have
references to mailing list/usenet discussions or papers about
such a feature?

/Tomas