From 0c09d9f00e39c4b1aee0fcb091fba068845b8edd Mon Sep 17 00:00:00 2001
From: Russell Yanofsky <russ@chaincode.com>
Date: Tue, 25 Oct 2016 15:30:55 -0400
Subject: [PATCH] Send tip change notification from invalidateblock

This change is needed to prevent sync_blocks timeouts in the mempool_reorg
test after the sync_blocks update in the upcoming commit
"[qa] Change sync_blocks to pick smarter maxheight".

This change was initially suggested by Suhas Daftuar <sdaftuar@chaincode.com>
in https://github.com/bitcoin/bitcoin/pull/8680#r78209060

Github-Pull: #9196
Rebased-From: 67c6326abd1788e6f411feb4f44b69774e76aae2
---
 src/main.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main.cpp b/src/main.cpp
index 083ea194a..10e2fa983 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -3176,6 +3176,7 @@ bool InvalidateBlock(CValidationState& state, const CChainParams& chainparams, C
 
     InvalidChainFound(pindex);
     mempool.removeForReorg(pcoinsTip, chainActive.Tip()->nHeight + 1, STANDARD_LOCKTIME_VERIFY_FLAGS);
+    uiInterface.NotifyBlockTip(IsInitialBlockDownload(), pindex->pprev);
     return true;
 }