ref: 2f8d3d7f2e4e3592b0a2fce30a4ec218aafe9bce 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") }