/// let value: i32 = 123;
///
/// // let the compiler make a trait object
-/// let object: &Foo = &value;
+/// let object: &dyn Foo = &value;
///
/// // look at the raw representation
/// let raw_object: raw::TraitObject = unsafe { mem::transmute(object) };
///
/// // construct a new object, pointing to a different `i32`, being
/// // careful to use the `i32` vtable from `object`
-/// let synthesized: &Foo = unsafe {
+/// let synthesized: &dyn Foo = unsafe {
/// mem::transmute(raw::TraitObject {
/// data: &other_value as *const _ as *mut (),
/// vtable: raw_object.vtable,