Crashes? in most cases simply does not compile because Scheme has static scope; it is thus not a program. But, we can of course go even further than that:

Crashes? in most cases simply does not compile because Scheme has static scope; it is thus not a program. But, we can of course go even further than that: (library (main constants (0 0 1)) (export pi) (define pi 3.1415926535) ) `(0 0 1)` is not a valid Scheme program, no matter what one define at any point; an integer can never be the operand of an expression.