From cc15c5bfd1eb3903de246c124702a7c66c687008 Mon Sep 17 00:00:00 2001
From: Suhas Daftuar <sdaftuar@chaincode.com>
Date: Sun, 28 Apr 2024 15:35:45 -0400
Subject: [PATCH] fuzz: don't allow adding duplicate transactions to the
 mempool

---
 src/test/fuzz/partially_downloaded_block.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/test/fuzz/partially_downloaded_block.cpp b/src/test/fuzz/partially_downloaded_block.cpp
index ab75afe066..2bf47930f4 100644
--- a/src/test/fuzz/partially_downloaded_block.cpp
+++ b/src/test/fuzz/partially_downloaded_block.cpp
@@ -72,7 +72,7 @@ FUZZ_TARGET(partially_downloaded_block, .init = initialize_pdb)
             available.insert(i);
         }
 
-        if (add_to_mempool) {
+        if (add_to_mempool && !pool.exists(GenTxid::Txid(tx->GetHash()))) {
             LOCK2(cs_main, pool.cs);
             pool.addUnchecked(ConsumeTxMemPoolEntry(fuzzed_data_provider, *tx));
             available.insert(i);