//go:linkname reflect_ifaceE2I reflect.ifaceE2I
func reflect_ifaceE2I(inter *interfacetype, e eface, dst *iface) {
	*dst = iface{assertE2I(inter, e._type), e.data}
}

//go:linkname reflectlite_ifaceE2I internal/reflectlite.ifaceE2I
func reflectlite_ifaceE2I(inter *interfacetype, e eface, dst *iface) {
	*dst = iface{assertE2I(inter, e._type), e.data}
}

func iterate_itabs(fn func(*itab)) {