ref: 646fc62b89f10a9de203d3989a7e9a140557f88f
dir: /test/asm/ref-override-bad.err/
ERROR: ref-override-bad.asm(8):
'X' already referenced at ref-override-bad.asm(7)
ERROR: ref-override-bad.asm(13):
'Y' already referenced at ref-override-bad.asm(10)
error: Assembly aborted (2 errors)!