eth/hooks: check nil stateDB to fix issue XinFinOrg#271

gzliudan · Jul 22, 2024 · 83f4c89 · 83f4c89
1 parent 337acac
commit 83f4c89
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/eth/hooks/engine_v1_hooks.go b/eth/hooks/engine_v1_hooks.go
@@ -228,11 +228,14 @@ func AttachConsensusV1Hooks(adaptor *XDPoS.XDPoS, bc *core.BlockChain, chainConf
 		)
 
 		stateDB, err := bc.StateAt(bc.GetBlockByHash(block).Root())
-		candidateAddresses = state.GetCandidates(stateDB)
-
 		if err != nil {
 			return nil, err
 		}
+		if stateDB == nil {
+			return nil, errors.New("nil stateDB in HookGetSignersFromContract")
+		}
+
+		candidateAddresses = state.GetCandidates(stateDB)
 		for _, address := range candidateAddresses {
 			v, err := validator.GetCandidateCap(opts, address)
 			if err != nil {