From 3dff5a9f3f8825e859f807a916766bbb4357dfa4 Mon Sep 17 00:00:00 2001
From: Robert Habermeier <rphmeier@gmail.com>
Date: Sun, 5 Jun 2016 22:14:25 +0200
Subject: [PATCH] add early exit for pruned blocks

---
 ethcore/src/client/client.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/ethcore/src/client/client.rs b/ethcore/src/client/client.rs
index 65cb13e4c..008ca7860 100644
--- a/ethcore/src/client/client.rs
+++ b/ethcore/src/client/client.rs
@@ -379,6 +379,11 @@ impl<V> Client<V> where V: Verifier {
 		self.block_header(id).and_then(|header| {
 			let db = self.state_db.lock().unwrap().boxed_clone();
 
+			// early exit for pruned blocks
+			if db.is_pruned() && self.chain.best_block_number() >= block_number + HISTORY {
+				return None;
+			}
+
 			// TODO [rob]: refactor State::from_existing so we avoid doing redundant lookups.
 			if !db.contains(&root) {
 				return None;