ref: 9b9f3ffb96228205ac7abb98602a52ff865b97bf dir: /test/link/section-union/split-data.asm/
IF !DEF(SECOND) DATA equs "ds 1\ndb $aa" ELSE DATA equs "db $bb\nds 1" ENDC SECTION UNION "mutually-overlaid data", ROM0 DATA PURGE DATA