fn test_isnil_byteptr(){
	pb := byteptr(0)
	assert isnil( pb )
}

fn test_isnil_voidptr(){
	pv := voidptr(0)
	assert isnil( pv )
}

fn test_isnil_charptr(){
	pc := &char(0)
	assert isnil( pc )
}

fn test_isnil_intptr(){
	pi := &int(0)
	assert isnil( pi )
}