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From: mdf@osu-eddie.UUCP (Mark D. Freeman)
Newsgroups: net.micro.pc
Subject: Bug in IBM BASIC Compiler 2.0 found
Message-ID: <994@osu-eddie.UUCP>
Date: Thu, 12-Dec-85 23:55:35 EST
Article-I.D.: osu-eddi.994
Posted: Thu Dec 12 23:55:35 1985
Date-Received: Fri, 13-Dec-85 20:44:03 EST
Distribution: na
Organization: StrongPoint Systems, Inc. (guest of Ohio State U.)
Lines: 37

In BASIC, appending a $ to a variable name indicates that the variable
represents a string.

In the IBM BASIC Compiler 2.0, you may use labels instead of line numbers.

This is legal:

		ON A GOTO LABEL.1,LABEL.2,LABEL.3
LABEL.1:	'
LABEL.2:	'
LABEL.3:	'

If you make a typo so that one of the labels has a $ appended to it, this 
makes the ON GOTO statement try to GOTO a string variable.  Obviously, no
dice.  However, the compiler can't figure out what is going on, and dies
with an internal error.

Try this at home:

		ON A GOTO LABEL.1,LABEL.2,LABEL.3$
LABEL.1:	'
LABEL.2:	'
LABEL.3:	'

Anybody find any other bugs in this new compiler?



-- 
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Mark D. Freeman                     Guest account at The Ohio State University
StrongPoint Systems, Inc.				    mdf@osu-eddie.UUCP
209 Olentangy Street					  Mdf@Ohio-State.CSNET
Columbus, OH  43202-2340		       Mdf%Ohio-State@CSNET-RELAY.ARPA
							 !cbosgd!osu-eddie!mdf
I disclaim even my very existance.
	"This must be one of those gay-arab-biker-shushi bars!" -- Protocol
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