rust/tests/ui/wf/wf-unsafe-trait-obj-match.rs
2023-01-11 09:32:08 +00:00

30 lines
476 B
Rust

// Check that we do not allow coercions to object
// unsafe trait objects in match arms
#![feature(object_safe_for_dispatch)]
trait Trait: Sized {}
struct S;
impl Trait for S {}
struct R;
impl Trait for R {}
fn opt() -> Option<()> {
Some(())
}
fn main() {
match opt() {
Some(()) => &S,
None => &R, //~ ERROR E0308
}
let t: &dyn Trait = match opt() { //~ ERROR E0038
Some(()) => &S, //~ ERROR E0038
None => &R,
};
}