error: Undefined symbol '@'
    at label-scope.asm(3)
error: Undefined symbol '.'
    at label-scope.asm(3)
error: Undefined symbol '..'
    at label-scope.asm(3)
error: Built-in symbol '@' cannot be purged
    at label-scope.asm(12)
error: Built-in symbol '.' cannot be purged
    at label-scope.asm(12)
error: Built-in symbol '..' cannot be purged
    at label-scope.asm(12)
Assembly aborted with 6 errors!