43 lines
811 B
Rust
43 lines
811 B
Rust
// 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..
|
|
//
|
|
//@ revisions: curr dyn_compatible_for_dispatch
|
|
|
|
#![cfg_attr(dyn_compatible_for_dispatch, feature(dyn_compatible_for_dispatch))]
|
|
|
|
|
|
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 {
|
|
//[curr]~^ ERROR E0038
|
|
t
|
|
//~^ ERROR E0038
|
|
}
|
|
|
|
fn make_baz<T:Baz>(t: &T) -> &dyn Baz {
|
|
//[curr]~^ ERROR E0038
|
|
t
|
|
//~^ ERROR E0038
|
|
}
|
|
|
|
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() {}
|