rust/tests/ui/traits/trait-upcasting/illegal-upcast-to-impl-opaque.rs
2024-05-23 15:48:06 +00:00

29 lines
692 B
Rust

//@ revisions: current next
//@[next] compile-flags: -Znext-solver
//@[next] failure-status: 101
//@[next] known-bug: unknown
//@[next] normalize-stderr-test "note: .*\n\n" -> ""
//@[next] normalize-stderr-test "thread 'rustc' panicked.*\n.*\n" -> ""
//@[next] normalize-stderr-test "(error: internal compiler error: [^:]+):\d+:\d+: " -> "$1:LL:CC: "
//@[next] normalize-stderr-test "delayed at .*" -> ""
//@[next] rustc-env:RUST_BACKTRACE=0
//@ check-pass
#![feature(trait_upcasting)]
trait Super {
type Assoc;
}
trait Sub: Super {}
impl<T: ?Sized> Super for T {
type Assoc = i32;
}
fn illegal(x: &dyn Sub<Assoc = i32>) -> &dyn Super<Assoc = impl Sized> {
x
}
fn main() {}