From 7564b055725b5521e0ca0a062de996fd999f3e33 Mon Sep 17 00:00:00 2001
From: Sergey Pepyakin <s.pepyakin@gmail.com>
Date: Mon, 20 Nov 2017 16:38:54 +0300
Subject: [PATCH] Make storage_read/write return nothing

---
 ethcore/wasm/src/env.rs     | 4 ++--
 ethcore/wasm/src/runtime.rs | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/ethcore/wasm/src/env.rs b/ethcore/wasm/src/env.rs
index 1a2f5fd3b..1004f3526 100644
--- a/ethcore/wasm/src/env.rs
+++ b/ethcore/wasm/src/env.rs
@@ -25,12 +25,12 @@ pub const SIGNATURES: &'static [UserFunctionDescriptor] = &[
 	Static(
 		"_storage_read",
 		&[I32; 2],
-		Some(I32),
+		None,
 	),
 	Static(
 		"_storage_write",
 		&[I32; 2],
-		Some(I32),
+		None,
 	),
 	Static(
 		"_balance",
diff --git a/ethcore/wasm/src/runtime.rs b/ethcore/wasm/src/runtime.rs
index 3c2bd101e..0782876b5 100644
--- a/ethcore/wasm/src/runtime.rs
+++ b/ethcore/wasm/src/runtime.rs
@@ -168,7 +168,7 @@ impl<'a, 'b> Runtime<'a, 'b> {
 
 		self.ext.set_storage(key, val).map_err(|_| UserTrap::StorageUpdateError)?;
 
-		Ok(Some(0i32.into()))
+		Ok(None)
 	}
 
 	/// Read from the storage to wasm memory
@@ -184,7 +184,7 @@ impl<'a, 'b> Runtime<'a, 'b> {
 
 		self.memory.set(val_ptr as u32, &*val)?;
 
-		Ok(Some(0.into()))
+		Ok(None)
 	}
 
 	/// Fetches balance for address