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#![allow(bare_trait_objects)]
trait DynIncompatible {
fn foo() -> Self;
}
struct A;
struct B;
impl DynIncompatible for A {
fn foo() -> Self {
A
}
}
impl DynIncompatible for B {
fn foo() -> Self {
B
}
}
fn car() -> dyn DynIncompatible { //~ ERROR the trait `DynIncompatible` cannot be made into an object
//~^ ERROR return type cannot have an unboxed trait object
if true {
return A;
}
B
}
fn cat() -> Box<dyn DynIncompatible> { //~ ERROR the trait `DynIncompatible` cannot be made into an
if true {
return Box::new(A); //~ ERROR cannot be made into an object
}
Box::new(B) //~ ERROR cannot be made into an object
}
fn main() {}
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