From 041a1c26d091e5623e510f0716872289e8e59510 Mon Sep 17 00:00:00 2001
From: Alexander Block <ablock84@gmail.com>
Date: Wed, 6 Mar 2019 07:58:27 +0100
Subject: [PATCH] Move safe TX checks into TestForBlock and
 TestPackageTransactions

Otherwise we'll miss checks for ancestors.
---
 src/miner.cpp | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/src/miner.cpp b/src/miner.cpp
index 64fd4fc93f..c4c8490693 100644
--- a/src/miner.cpp
+++ b/src/miner.cpp
@@ -287,11 +287,15 @@ bool BlockAssembler::TestPackage(uint64_t packageSize, unsigned int packageSigOp
 
 // Perform transaction-level checks before adding to block:
 // - transaction finality (locktime)
+// - safe TXs in regard to ChainLocks
 bool BlockAssembler::TestPackageTransactions(const CTxMemPool::setEntries& package)
 {
     BOOST_FOREACH (const CTxMemPool::txiter it, package) {
         if (!IsFinalTx(it->GetTx(), nHeight, nLockTimeCutoff))
             return false;
+        if (!llmq::chainLocksHandler->IsTxSafeForMining(it->GetTx().GetHash())) {
+            return false;
+        }
     }
     return true;
 }
@@ -333,6 +337,10 @@ bool BlockAssembler::TestForBlock(CTxMemPool::txiter iter)
     if (!IsFinalTx(iter->GetTx(), nHeight, nLockTimeCutoff))
         return false;
 
+    if (!llmq::chainLocksHandler->IsTxSafeForMining(iter->GetTx().GetHash())) {
+        return false;
+    }
+
     return true;
 }
 
@@ -454,12 +462,6 @@ void BlockAssembler::addPackageTxs(int &nPackagesSelected, int &nDescendantsUpda
             continue;
         }
 
-        if (mi != mempool.mapTx.get<ancestor_score>().end() &&
-                !llmq::chainLocksHandler->IsTxSafeForMining(mi->GetTx().GetHash())) {
-            ++mi;
-            continue;
-        }
-
         // Now that mi is not stale, determine which transaction to evaluate:
         // the next entry from mapTx, or the best from mapModifiedTx?
         bool fUsingModified = false;
@@ -530,7 +532,7 @@ void BlockAssembler::addPackageTxs(int &nPackagesSelected, int &nDescendantsUpda
         onlyUnconfirmed(ancestors);
         ancestors.insert(iter);
 
-        // Test if all tx's are Final
+        // Test if all tx's are Final and safe
         if (!TestPackageTransactions(ancestors)) {
             if (fUsingModified) {
                 mapModifiedTx.get<ancestor_score>().erase(modit);
@@ -608,10 +610,6 @@ void BlockAssembler::addPriorityTxs()
             continue;
         }
 
-        if (!llmq::chainLocksHandler->IsTxSafeForMining(iter->GetTx().GetHash())) {
-            continue;
-        }
-
         // If this tx fits in the block add it, otherwise keep looping
         if (TestForBlock(iter)) {
             AddToBlock(iter);