ref: 58ace77cc4b17d32fe0cf3904ffd57b4b1afe4b4 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", ptr) }