File: add-supertrait-auto-traits.rs

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rustc 1.85.0%2Bdfsg2-3
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//@ check-pass
//@ revisions: current next
//@ ignore-compare-mode-next-solver (explicit revisions)
//@[next] compile-flags: -Znext-solver

#![feature(trait_upcasting)]

trait Target {}
trait Source: Send + Target {}

fn upcast(x: &dyn Source) -> &(dyn Target + Send) { x }

fn same(x: &dyn Source) -> &(dyn Source + Send) { x }

fn main() {}