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-rw-r--r--src/txmempool.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/txmempool.cpp b/src/txmempool.cpp
index a1a37dac75..236527a2ba 100644
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -171,6 +171,8 @@ void CTxMemPool::UpdateTransactionsFromBlock(const std::vector<uint256> &vHashes
bool CTxMemPool::CalculateMemPoolAncestors(const CTxMemPoolEntry &entry, setEntries &setAncestors, uint64_t limitAncestorCount, uint64_t limitAncestorSize, uint64_t limitDescendantCount, uint64_t limitDescendantSize, std::string &errString, bool fSearchForParents /* = true */) const
{
+ LOCK(cs);
+
setEntries parentHashes;
const CTransaction &tx = entry.GetTx();