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core/state/snapshot: fix panic on missing parent

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Péter Szilágyi 2021-03-22 22:41:28 +02:00
parent 8d6cc16742
commit a31f6d54df
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1 changed files with 2 additions and 2 deletions
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4
core/state/snapshot/snapshot.go
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@ -283,11 +283,11 @@ func (t *Tree) Update(blockRoot common.Hash, parentRoot common.Hash, destructs m
return errSnapshotCycle return errSnapshotCycle
} }
// Generate a new snapshot on top of the parent // Generate a new snapshot on top of the parent
parent := t.Snapshot(parentRoot).(snapshot) parent := t.Snapshot(parentRoot)
if parent == nil { if parent == nil {
return fmt.Errorf("parent [%#x] snapshot missing", parentRoot) return fmt.Errorf("parent [%#x] snapshot missing", parentRoot)
} }
snap := parent.Update(blockRoot, destructs, accounts, storage) snap := parent.(snapshot).Update(blockRoot, destructs, accounts, storage)
// Save the new snapshot for later // Save the new snapshot for later
t.lock.Lock() t.lock.Lock()