From c3b9b375cc1b08f42809638897145d93c1f6bbcd Mon Sep 17 00:00:00 2001
From: Guillaume Ballet <3272758+gballet@users.noreply.github.com>
Date: Wed, 31 Jan 2024 11:15:43 +0100
Subject: [PATCH] fix: nil pointer when deactivating verkle-incompatible
 genesis code (#353)

---
 core/genesis.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/core/genesis.go b/core/genesis.go
index 19a84df818..1262d350f2 100644
--- a/core/genesis.go
+++ b/core/genesis.go
@@ -342,7 +342,8 @@ func SetupGenesisBlockWithOverride(db ethdb.Database, triedb *trie.Database, gen
 	// We have the genesis block in database(perhaps in ancient database)
 	// but the corresponding state is missing.
 	header := rawdb.ReadHeader(db, stored, 0)
-	if !genesis.Config.IsPrague(big.NewInt(0), genesis.Timestamp) && header.Root != types.EmptyRootHash && !rawdb.HasLegacyTrieNode(db, header.Root) {
+	notverkle := genesis == nil || genesis.Config == nil || genesis.Config.PragueTime == nil || !genesis.Config.IsPrague(big.NewInt(0), genesis.Timestamp)
+	if notverkle && header.Root != types.EmptyRootHash && !rawdb.HasLegacyTrieNode(db, header.Root) {
 		if genesis == nil {
 			genesis = DefaultGenesisBlock()
 		}