From 9ec75c5ef4182a38e261beaafdc94325785cc7c5 Mon Sep 17 00:00:00 2001
From: Ruben Dario Ponticelli <rdponticelli@gmail.com>
Date: Wed, 5 Nov 2014 20:52:27 -0300
Subject: [PATCH] Add a locking mechanism to IsInitialBlockDownload to ensure
 it never goes from false to true.

---
 src/main.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/main.cpp b/src/main.cpp
index bf487df39f..0fd8065342 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1177,8 +1177,14 @@ bool IsInitialBlockDownload()
     LOCK(cs_main);
     if (fImporting || fReindex || chainActive.Height() < Checkpoints::GetTotalBlocksEstimate())
         return true;
-    return (chainActive.Height() < pindexBestHeader->nHeight - 24 * 6 ||
+    static bool lockIBDState = false;
+    if (lockIBDState)
+        return false;
+    bool state = (chainActive.Height() < pindexBestHeader->nHeight - 24 * 6 ||
             pindexBestHeader->GetBlockTime() < GetTime() - 24 * 60 * 60);
+    if (!state)
+        lockIBDState = true;
+    return state;
 }
 
 bool fLargeWorkForkFound = false;