core/state: filter out nil trie for copy (#25575) (#340)

Co-authored-by: rjl493456442 <[email protected]>
axieinfinity · Aug 16, 2023 · 30fa13a · 30fa13a
1 parent 5402fde
commit 30fa13a
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