diff options
| -rw-r--r-- | tests/ui/dyn-star/dyn-star-to-dyn.rs | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/tests/ui/dyn-star/dyn-star-to-dyn.rs b/tests/ui/dyn-star/dyn-star-to-dyn.rs index a6d9df9523a..1d974b7ecb2 100644 --- a/tests/ui/dyn-star/dyn-star-to-dyn.rs +++ b/tests/ui/dyn-star/dyn-star-to-dyn.rs @@ -1,9 +1,17 @@ -// build-pass +// run-pass #![feature(dyn_star)] //~^ WARN the feature `dyn_star` is incomplete and may not be safe to use and/or cause compiler crashes +use std::fmt::Debug; + fn main() { - let x: dyn* Send = &(); - let x = Box::new(x) as Box<dyn Send>; + let x: dyn* Debug = &42; + let x = Box::new(x) as Box<dyn Debug>; + assert_eq!("42", format!("{x:?}")); + + // Also test opposite direction. + let x: Box<dyn Debug> = Box::new(42); + let x = &x as dyn* Debug; + assert_eq!("42", format!("{x:?}")); } |