From d803c18bbfbeea6a7fe0ce4b2c0e957f143412bf Mon Sep 17 00:00:00 2001
From: Ben Blum <bblum@andrew.cmu.edu>
Date: Mon, 5 Aug 2013 20:14:20 -0400
Subject: [PATCH] (cleanup) Improve rtabort message for atomic-sleep.

---
 src/libstd/rt/kill.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/libstd/rt/kill.rs b/src/libstd/rt/kill.rs
index 3372c13b8770..a4f48d979359 100644
--- a/src/libstd/rt/kill.rs
+++ b/src/libstd/rt/kill.rs
@@ -590,7 +590,8 @@ impl Death {
     #[inline]
     pub fn assert_may_sleep(&self) {
         if self.wont_sleep != 0 {
-            rtabort!("illegal atomic-sleep: can't deschedule inside atomically()");
+            rtabort!("illegal atomic-sleep: attempt to reschedule while \
+                      using an Exclusive or LittleLock");
         }
     }
 }