@mflatt The FFI docs have the following pseudocode for malloc: (let ([p (malloc from-type)]) (ptr-set! p from-type v) (ptr-ref p to-type))

Errr….cast, they have the pseudocode for cast.

But in this example, shouldn’t the malloc be apointer, given tht ptr-set! and ptr-ref are happening to it?

As shown here:

http://docs.racket-lang.org/foreign/Miscellaneous_Support.html?q=cast#%28def._%28%28lib._ffi%2Funsafe..rkt%29._cast%29%29

If so I’d be happy to fix that.

@leif I’m not sure what you mean, and I think that code is right. (It’s the actual implementation in the simple case, as reflected by the convert helper function.) malloc does return a pointer, but the pointer refers to from-type content, where from-type isn’t isn’t necessarily a pointer type. Similarly, pre-set! and ptr-ref want a pointer to a from-type/to-type to cast between those.

@mflatt Ah, right, okay, that makes sense. Thanks.

Which package provides raco exe?

Answering my own question: compiler-lib