| // Check that we correctly prevent users from making trait objects |
| // form traits that make use of `Self` in an argument or return |
| // position, unless `where Self : Sized` is present.. |
| |
| |
| trait Bar { |
| fn bar(&self, x: &Self); |
| } |
| |
| trait Baz { |
| fn baz(&self) -> Self; |
| } |
| |
| trait Quux { |
| fn quux(&self, s: &Self) -> Self where Self : Sized; |
| } |
| |
| fn make_bar<T:Bar>(t: &T) -> &dyn Bar { |
| //~^ ERROR E0038 |
| t |
| } |
| |
| fn make_baz<T:Baz>(t: &T) -> &dyn Baz { |
| //~^ ERROR E0038 |
| t |
| } |
| |
| fn make_quux<T:Quux>(t: &T) -> &dyn Quux { |
| t |
| } |
| |
| fn make_quux_explicit<T:Quux>(t: &T) -> &dyn Quux { |
| t as &dyn Quux |
| } |
| |
| fn main() {} |
