From 2ecb6ab7aef95f97012a6c1df53e562a2825c73c Mon Sep 17 00:00:00 2001
From: Domino Valdano <dominoplural@gmail.com>
Date: Tue, 3 Apr 2018 14:34:02 -0700
Subject: [PATCH] core:  Fixed segfault in failing tests, due to false
 assumption of bc *Blockchain being non-nil.

---
 core/state_processor.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/core/state_processor.go b/core/state_processor.go
index fa5edbf550..812825d39a 100644
--- a/core/state_processor.go
+++ b/core/state_processor.go
@@ -126,7 +126,9 @@ func ApplyTransaction(config *params.ChainConfig, bc *BlockChain, author *common
 
 	retData := types.ReturnData{TxHash: receipt.TxHash, Data: data, Removed: false}
 	txPostEvent := TransactionEvent{TxHash: receipt.TxHash, RetData: retData}
-	go bc.txPostFeed.Send(&txPostEvent)
+	if bc != nil { // For some tests unrelated to tx events, this ptr can be nil; should always be non-nil in production
+		go bc.txPostFeed.Send(&txPostEvent)
+	}
 
 	return receipt, gas, err
 }