Edinburgh IMP77 Compiler - Version 8.4
    1 %externalroutine test     ;! Fails if in a routine but works OK in a begin/end block
				.machinemode zarch
				.machine "zEC12"
		.text
		.Ltext0:
				.align	8
		.globl TEST
		TEST:
		.LFB185:
		.LDL1:
    2   %if 0 = 1 %then %start  ;! only fails if in an "if" condition. Doesn't matter if forward or reversed or a start/finish block!
    3     %signal 15,2
    4   %finish
    5 %end
    6
				br	%r14
		.LFE185:
		.Letext0:
    7 %endoffile
    6 Statements compiled