---

yaml
---
r: 273302
b: refs/heads/beta
c: 157e1bc
h: refs/heads/master

Author: sfackler

[refs]

@@ -23,7 +23,7 @@ refs/tags/0.9: 36870b185fc5f5486636d4515f0e22677493f225
 refs/tags/0.10: ac33f2b15782272ae348dbd7b14b8257b2148b5a
 refs/tags/0.11.0: e1247cb1d0d681be034adb4b558b5a0c0d5720f9
 refs/tags/0.12.0: f0c419429ef30723ceaf6b42f9b5a2aeb5d2e2d1
-refs/heads/beta: 159eae8b8b32f76c1ae945cdfc52fb77ffc01d52
+refs/heads/beta: 157e1bc6811b033bf640b68ffdf3ea0f1b804ccf
 refs/tags/1.0.0-alpha: e42bd6d93a1d3433c486200587f8f9e12590a4d7
 refs/heads/tmp: e06d2ad9fcd5027bcaac5b08fc9aa39a49d0ecd3
 refs/tags/1.0.0-alpha.2: 4c705f6bc559886632d3871b04f58aab093bfa2f

branches/beta/src/libstd/panic.rs

@@ -29,7 +29,7 @@ pub use panicking::{take_hook, set_hook, PanicInfo, Location};
 #[rustc_deprecated(since = "1.9.0", reason = "renamed to set_hook")]
 #[unstable(feature = "panic_handler", reason = "awaiting feedback", issue = "30449")]
 pub fn set_handler<F>(handler: F) where F: Fn(&PanicInfo) + 'static + Sync + Send {
-    set_hook(handler)
+    set_hook(Box::new(handler))
 }
 
 ///

branches/beta/src/libstd/panicking.rs

@@ -58,12 +58,11 @@ static FIRST_PANIC: AtomicBool = AtomicBool::new(true);
 ///
 /// Panics if called from a panicking thread.
 #[unstable(feature = "panic_handler", reason = "awaiting feedback", issue = "30449")]
-pub fn set_hook<F>(hook: F) where F: Fn(&PanicInfo) + 'static + Sync + Send {
+pub fn set_hook(hook: Box<Fn(&PanicInfo) + 'static + Sync + Send>) {
     if thread::panicking() {
         panic!("cannot modify the panic hook from a panicking thread");
     }
 
-    let hook = Box::new(hook);
     unsafe {
         let lock = HOOK_LOCK.write();
         let old_hook = HOOK;