@builtin("forget")
fn extern "jin" forget*[T](x: &T) unit

@builtin("panic")
fn extern "jin" panic*(msg: &str) never

@builtin("slice-grow")
fn extern "jin" slice-grow*[T](slice: &mut []T, new-cap: uint) unit

@builtin("slice-utf8-validate")
fn extern "jin" slice-utf8-validate*(slice: &[]u8) bool