ref: 41dfa1df58c7e398a68e9c2b6f6f745b7b3f0b2b dir: /test/fncast.myr/
use std const main = { var fn, envfn var ptr fn = { } envfn = { ptr = ptr } ptr = (fn : byte#) ptr = (envfn : byte#) std.put("ok\n") }