From b761a58171f2a7b2249211840aeb203a37dc8b13 Mon Sep 17 00:00:00 2001
From: pablomartin4btc <pablomartin4btc@gmail.com>
Date: Wed, 18 Oct 2023 20:17:42 -0300
Subject: [PATCH] assumeutxo, blockstorage: prevent core dump on invalid hash

Github-Pull: #28698
Rebased-from: 4a5be10b928d4ed33d223972537c1cb79163e79c
---
 src/node/blockstorage.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/node/blockstorage.cpp b/src/node/blockstorage.cpp
index 53f616de23..058e524745 100644
--- a/src/node/blockstorage.cpp
+++ b/src/node/blockstorage.cpp
@@ -387,7 +387,12 @@ bool BlockManager::LoadBlockIndex(const std::optional<uint256>& snapshot_blockha
     }
 
     if (snapshot_blockhash) {
-        const AssumeutxoData au_data = *Assert(GetParams().AssumeutxoForBlockhash(*snapshot_blockhash));
+        const std::optional<AssumeutxoData> maybe_au_data = GetParams().AssumeutxoForBlockhash(*snapshot_blockhash);
+        if (!maybe_au_data) {
+            m_opts.notifications.fatalError(strprintf("Assumeutxo data not found for the given blockhash '%s'.", snapshot_blockhash->ToString()));
+            return false;
+        }
+        const AssumeutxoData& au_data = *Assert(maybe_au_data);
         m_snapshot_height = au_data.height;
         CBlockIndex* base{LookupBlockIndex(*snapshot_blockhash)};