rust/tests/ui/feature-gates/feature-gate-object_safe_for_dispatch.rs
2023-01-11 09:32:08 +00:00

42 lines
757 B
Rust

// Test that the use of the non object-safe trait objects
// are gated by `object_safe_for_dispatch` feature gate.
trait NonObjectSafe1: Sized {}
trait NonObjectSafe2 {
fn static_fn() {}
}
trait NonObjectSafe3 {
fn foo<T>(&self);
}
trait NonObjectSafe4 {
fn foo(&self, s: &Self);
}
fn takes_non_object_safe_ref<T>(obj: &dyn NonObjectSafe1) {
//~^ ERROR E0038
}
fn return_non_object_safe_ref() -> &'static dyn NonObjectSafe2 {
//~^ ERROR E0038
loop {}
}
fn takes_non_object_safe_box(obj: Box<dyn NonObjectSafe3>) {
//~^ ERROR E0038
}
fn return_non_object_safe_rc() -> std::rc::Rc<dyn NonObjectSafe4> {
//~^ ERROR E0038
loop {}
}
trait Trait {}
impl Trait for dyn NonObjectSafe1 {}
//~^ ERROR E0038
fn main() {}