core/state: filter out nil trie for copy (ethereum#25575)

syscoin · Sep 2, 2022 · 01c6d54 · 01c6d54
1 parent 4bd1c49
commit 01c6d54
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/core/state/trie_prefetcher.go b/core/state/trie_prefetcher.go
@@ -126,6 +126,9 @@ func (p *triePrefetcher) copy() *triePrefetcher {
 	// If the prefetcher is already a copy, duplicate the data
 	if p.fetches != nil {
 		for root, fetch := range p.fetches {
+			if fetch == nil {
+				continue
+			}
 			copy.fetches[root] = p.db.CopyTrie(fetch)
 		}
 		return copy