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From: CURLEY@WHARTON.UPENN.EDU ("Curley, Robert F.")
Newsgroups: comp.os.vms
Subject: MACRO Puzzle
Message-ID: <8706180020.AA04423@ucbvax.Berkeley.EDU>
Date: Mon, 15-Jun-87 10:19:00 EDT
Article-I.D.: ucbvax.8706180020.AA04423
Posted: Mon Jun 15 10:19:00 1987
Date-Received: Sun, 21-Jun-87 11:42:26 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
Organization: The ARPA Internet
Lines: 31

This is not new, but it came up in discussion recently and I thought
that those who are interested in MACRO might be interested.

Consider the following program (originally written in MACRO-11):

	.MACRO	BLUE
	.IF NDF BLACK
BLACK=0
	.ENDC
BLACK=BLACK+1
	.ENDM
;
	BLUE
RED:	.WORD	BLACK
	.END

The question is: "What value does the assembler place in RED?"

The interesting observation: "The value depends upon whether you run this
code through the VAX MACRO or through the MACRO-11 assembler."

--Bob Curley

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