From f94b23ed1d308f7ca5d803d7a1639e168fcf55a1 Mon Sep 17 00:00:00 2001
From: Dylan McKay <me@dylanmckay.io>
Date: Mon, 5 Nov 2018 20:20:24 +1300
Subject: [PATCH] Use the new panic handler feature

The "panic_fmt" lang item no longer exists; it has been replaced with
the unstable feature #[panic_handler]
---
 src/lib.rs      | 1 +
 src/std_stub.rs | 7 +++----
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index a474a88..7be2b49 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -7,6 +7,7 @@
 #![feature(associated_type_defaults)]
 #![feature(const_fn)]
 #![feature(lang_items)]
+#![feature(panic_handler)]
 #![feature(unwind_attributes)]
 
 #![no_core]
diff --git a/src/std_stub.rs b/src/std_stub.rs
index 60bbb60..53cd096 100644
--- a/src/std_stub.rs
+++ b/src/std_stub.rs
@@ -7,10 +7,9 @@ pub mod std {
     pub unsafe extern "C" fn rust_eh_personality(_state: (), _exception_object: *mut (), _context: *mut ()) -> () {
     }
 
-    #[lang = "panic_fmt"]
-    #[unwind]
-    pub extern fn rust_begin_panic(_msg: (), _file: &'static str, _line: u32) -> ! {
-        loop { }
+    #[panic_handler]
+    fn panic(_info: &::core::panic::PanicInfo) -> ! {
+        loop {}
     }
 }