From 24b2f83713f5e3fd5147e99be44a5f842a6332fb Mon Sep 17 00:00:00 2001
From: Paul Hauner <paul@paulhauner.com>
Date: Tue, 13 Aug 2019 07:35:52 +1000
Subject: [PATCH] Fix wrong state given to op pool prune

---
 beacon_node/beacon_chain/src/beacon_chain.rs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/beacon_node/beacon_chain/src/beacon_chain.rs b/beacon_node/beacon_chain/src/beacon_chain.rs
index 0e0583309f..bed50202d4 100644
--- a/beacon_node/beacon_chain/src/beacon_chain.rs
+++ b/beacon_node/beacon_chain/src/beacon_chain.rs
@@ -1199,8 +1199,12 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
             self.fork_choice
                 .process_finalization(&finalized_block, finalized_block_root)?;
 
-            self.op_pool
-                .prune_all(&self.head().beacon_state, &self.spec);
+            let finalized_state = self
+                .store
+                .get::<BeaconState<T::EthSpec>>(&finalized_block.state_root)?
+                .ok_or_else(|| Error::MissingBeaconState(finalized_block.state_root))?;
+
+            self.op_pool.prune_all(&finalized_state, &self.spec);
 
             Ok(())
         }