ref: 8a8f41b17cb8c2f51b26e3e3a541e7b0a876ec3c 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") }