From 46810e961c95726ef52b52fb0b41c1828a5d09c1 Mon Sep 17 00:00:00 2001
From: Gav Wood <gav@ethcore.io>
Date: Thu, 14 Jan 2016 01:27:02 +0100
Subject: [PATCH] Broken casting.

---
 src/hash.rs | 34 ++++++++++++++++++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

diff --git a/src/hash.rs b/src/hash.rs
index 73ffdd538..de63ab061 100644
--- a/src/hash.rs
+++ b/src/hash.rs
@@ -412,8 +412,18 @@ macro_rules! impl_hash {
 	}
 }
 
-impl<'a> From<&'a U256> for H256 {
-	fn from(value: &'a U256) -> H256 {
+impl From<U256> for H256 {
+	fn from(value: U256) -> H256 {
+		unsafe {
+			let mut ret: H256 = ::std::mem::uninitialized();
+			value.to_bytes(&mut ret);
+			ret
+		}
+	}
+}
+
+impl<'_> From<&'_ U256> for H256 {
+	fn from(value: &'_ U256) -> H256 {
 		unsafe {
 			let mut ret: H256 = ::std::mem::uninitialized();
 			value.to_bytes(&mut ret);
@@ -432,6 +442,16 @@ impl From<H256> for Address {
 	}
 }
 
+impl<'_> From<&'_ H256> for Address {
+	fn from(value: &'_ H256) -> Address {
+		unsafe {
+			let mut ret: Address = ::std::mem::uninitialized();
+			::std::ptr::copy(value.as_ptr().offset(12), ret.as_mut_ptr(), 20);
+			ret
+		}
+	}
+}
+
 impl From<Address> for H256 {
 	fn from(value: Address) -> H256 {
 		unsafe {
@@ -442,6 +462,16 @@ impl From<Address> for H256 {
 	}
 }
 
+impl<'_> From<&'_ Address> for H256 {
+	fn from(value: &'_ Address) -> H256 {
+		unsafe {
+			let mut ret = H256::new();
+			::std::ptr::copy(value.as_ptr(), ret.as_mut_ptr().offset(12), 20);
+			ret
+		}
+	}
+}
+
 pub fn h256_from_hex(s: &str) -> H256 {
 	use std::str::FromStr;
 	H256::from_str(s).unwrap()