ref: d5fe5b7cc7d8a629a190c1834f76b91a6bdb7e0e dir: /test/fncast.myr/
use std const main = { var fn, envfn var ptr fn = { } envfn = { ptr = ptr } ptr = fn castto(byte#) ptr = envfn castto(byte#) std.put("ok\n") }