Remove cross-borrowing for traits.

Closes #15349

[breaking-change]

Trait objects are no longer implicitly coerced from Box<T> to &T. You must make an explicit coercion using `&*`.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/librustrt/unwind.rs b/src/librustrt/unwind.rs
index 9de58960c5e..9e6dff8a751 100644
--- a/src/librustrt/unwind.rs
+++ b/src/librustrt/unwind.rs
@@ -570,7 +570,7 @@ fn begin_unwind_inner(msg: Box<Any + Send>, file_line: &(&'static str, uint)) ->
             n => {
                 let f: Callback = unsafe { mem::transmute(n) };
                 let (file, line) = *file_line;
-                f(msg, file, line);
+                f(&*msg, file, line);
             }
         }
     };