/
/ Check whether IFNZRO EXPR is true when EXPR refers to an undefined
/ symbol.  Treating it as such will cause TSS/8 assembly to fail.
/ A similar bug exists with IFZERO.  These should not change their
/ result, but it is nearly impossible for them not to.
/
/ Encasing them in IFDEF would work around the problem.
/
*200
START,	NOP
	/IFZERO FOO1 <HLT>
	IFNZRO FOO1 <HLT>
FOO1,	NOP	/ Should not move between passes 1 and 2.
	HLT
$