From 9b060e5cfb0d185b553b21ae19d390f81e83bd4d Mon Sep 17 00:00:00 2001
From: Matt Corallo <git@bluematt.me>
Date: Wed, 26 Aug 2015 18:58:17 -0700
Subject: [PATCH] Fix removal of time-locked transactions during reorg

---
 src/main.cpp      |  2 +-
 src/txmempool.cpp | 25 +++++++++++++++----------
 src/txmempool.h   |  2 +-
 3 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/src/main.cpp b/src/main.cpp
index 55b0517349..3422c56cfc 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2350,7 +2350,7 @@ bool static DisconnectTip(CValidationState& state, const Consensus::Params& cons
     // UpdateTransactionsFromBlock finds descendants of any transactions in this
     // block that were added back and cleans up the mempool state.
     mempool.UpdateTransactionsFromBlock(vHashUpdate);
-    mempool.removeCoinbaseSpends(pcoinsTip, pindexDelete->nHeight);
+    mempool.removeForReorg(pcoinsTip, pindexDelete->nHeight);
     mempool.check(pcoinsTip);
     // Update chainActive and related variables.
     UpdateTip(pindexDelete->pprev);
diff --git a/src/txmempool.cpp b/src/txmempool.cpp
index 6d1df0b3d1..1c38e32601 100644
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -11,6 +11,7 @@
 #include "main.h"
 #include "policy/fees.h"
 #include "streams.h"
+#include "timedata.h"
 #include "util.h"
 #include "utilmoneystr.h"
 #include "utiltime.h"
@@ -478,22 +479,26 @@ void CTxMemPool::remove(const CTransaction &origTx, std::list<CTransaction>& rem
     }
 }
 
-void CTxMemPool::removeCoinbaseSpends(const CCoinsViewCache *pcoins, unsigned int nMemPoolHeight)
+void CTxMemPool::removeForReorg(const CCoinsViewCache *pcoins, unsigned int nMemPoolHeight)
 {
     // Remove transactions spending a coinbase which are now immature
     LOCK(cs);
     list<CTransaction> transactionsToRemove;
     for (indexed_transaction_set::const_iterator it = mapTx.begin(); it != mapTx.end(); it++) {
         const CTransaction& tx = it->GetTx();
-        BOOST_FOREACH(const CTxIn& txin, tx.vin) {
-            indexed_transaction_set::const_iterator it2 = mapTx.find(txin.prevout.hash);
-            if (it2 != mapTx.end())
-                continue;
-            const CCoins *coins = pcoins->AccessCoins(txin.prevout.hash);
-            if (nCheckFrequency != 0) assert(coins);
-            if (!coins || (coins->IsCoinBase() && ((signed long)nMemPoolHeight) - coins->nHeight < COINBASE_MATURITY)) {
-                transactionsToRemove.push_back(tx);
-                break;
+        if (!IsFinalTx(tx, nMemPoolHeight, GetAdjustedTime())) {
+            transactionsToRemove.push_back(tx);
+        } else {
+            BOOST_FOREACH(const CTxIn& txin, tx.vin) {
+                indexed_transaction_set::const_iterator it2 = mapTx.find(txin.prevout.hash);
+                if (it2 != mapTx.end())
+                    continue;
+                const CCoins *coins = pcoins->AccessCoins(txin.prevout.hash);
+		if (nCheckFrequency != 0) assert(coins);
+                if (!coins || (coins->IsCoinBase() && ((signed long)nMemPoolHeight) - coins->nHeight < COINBASE_MATURITY)) {
+                    transactionsToRemove.push_back(tx);
+                    break;
+                }
             }
         }
     }
diff --git a/src/txmempool.h b/src/txmempool.h
index c470bbe28f..f45d5a2084 100644
--- a/src/txmempool.h
+++ b/src/txmempool.h
@@ -376,7 +376,7 @@ public:
     bool addUnchecked(const uint256& hash, const CTxMemPoolEntry &entry, setEntries &setAncestors, bool fCurrentEstimate = true);
 
     void remove(const CTransaction &tx, std::list<CTransaction>& removed, bool fRecursive = false);
-    void removeCoinbaseSpends(const CCoinsViewCache *pcoins, unsigned int nMemPoolHeight);
+    void removeForReorg(const CCoinsViewCache *pcoins, unsigned int nMemPoolHeight);
     void removeConflicts(const CTransaction &tx, std::list<CTransaction>& removed);
     void removeForBlock(const std::vector<CTransaction>& vtx, unsigned int nBlockHeight,
                         std::list<CTransaction>& conflicts, bool fCurrentEstimate = true);