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-rw-r--r--core/blockchain.go6
1 files changed, 5 insertions, 1 deletions
diff --git a/core/blockchain.go b/core/blockchain.go
index d173b2de2..ee1c0702b 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -445,7 +445,11 @@ func (bc *BlockChain) repair(head **types.Block) error {
return nil
}
// Otherwise rewind one block and recheck state availability there
- (*head) = bc.GetBlock((*head).ParentHash(), (*head).NumberU64()-1)
+ block := bc.GetBlock((*head).ParentHash(), (*head).NumberU64()-1)
+ if block == nil {
+ return fmt.Errorf("failed to repair block, can not get block at height %d", (*head).NumberU64())
+ }
+ (*head) = block
}
}