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

axieinfinity · Aug 14, 2023 · aa10c38 · aa10c38
1 parent 5402fde
commit aa10c38
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/core/state/trie_prefetcher.go b/core/state/trie_prefetcher.go
@@ -127,6 +127,9 @@ 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