From 570590f7271ddd1bcedf14a7bbc38975db720419 Mon Sep 17 00:00:00 2001
From: Clar Charr <clar@charr.xyz>
Date: Wed, 6 Jun 2018 19:40:03 -0400
Subject: [PATCH] impl Hash for !

---
 src/libcore/hash/mod.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/libcore/hash/mod.rs b/src/libcore/hash/mod.rs
index 3e1f21cafe412..e6f8dfffd6330 100644
--- a/src/libcore/hash/mod.rs
+++ b/src/libcore/hash/mod.rs
@@ -603,6 +603,13 @@ mod impls {
         }
     }
 
+    #[stable(feature = "never_hash", since = "1.29.0")]
+    impl Hash for ! {
+        fn hash<H: Hasher>(&self, _: &mut H) {
+            *self
+        }
+    }
+
     macro_rules! impl_hash_tuple {
         () => (
             #[stable(feature = "rust1", since = "1.0.0")]