| // revisions: curr object_safe_for_dispatch |
| |
| #![cfg_attr(object_safe_for_dispatch, feature(object_safe_for_dispatch))] |
| |
| use std::rc::Rc; |
| |
| trait Foo { |
| fn foo(self: &Rc<Self>) -> usize; |
| } |
| |
| trait Bar { |
| fn foo(self: &Rc<Self>) -> usize where Self: Sized; |
| fn bar(self: Rc<Self>) -> usize; |
| } |
| |
| impl Foo for usize { |
| fn foo(self: &Rc<Self>) -> usize { |
| **self |
| } |
| } |
| |
| impl Bar for usize { |
| fn foo(self: &Rc<Self>) -> usize { |
| **self |
| } |
| |
| fn bar(self: Rc<Self>) -> usize { |
| *self |
| } |
| } |
| |
| fn make_foo() { |
| let x = Rc::new(5usize) as Rc<dyn Foo>; |
| //[curr]~^ ERROR E0038 |
| //[curr]~| ERROR E0038 |
| //[object_safe_for_dispatch]~^^^ ERROR E0038 |
| } |
| |
| fn make_bar() { |
| let x = Rc::new(5usize) as Rc<dyn Bar>; |
| x.bar(); |
| } |
| |
| fn main() {} |