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From: maman@uranie.inria.fr (Nathan Maman)
Newsgroups: comp.lang.pascal,comp.lang.fortran
Subject: Re: Gotos are okay, but what about COME-FROM's??
Message-ID: <9904@mirsa.inria.fr>
Date: 29 Jan 91 15:54:44 GMT
References: <1991Jan24.112445.3829@kcbbs> <1991Jan25.175604.34@csc.canterbury.ac.nz> <MAINE.91Jan24223115@ra.dfrf.nasa.gov> <1991Jan25.231348.1469@dragon.wpd.sgi.com>
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	I don't know exactly how these COMEFROM's worked, but perhaps
	they could be used in Exceptions|Errors|Signals treatment(s).

	Example:

	Sub s1
	    statements
	    return
	  entry-point s1_some_signal
	    treatment
	    you should be able here to
		a) return to calculation in s1
		b) return to calling sub
		c) exit from program with some message
	end s1

	Sub signal_handler
	    if COME-FROM s1
	    then go to s1_some_signal
	    end if
	    return (or whatever: stop, ...)
	end

	What do you think, am I wrong ?

-- 
				Nat.

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