forked from cerc-io/plugeth
core: fixed unwinding bad hash (#3347)
Fixed unwinding of bad hashes when already on the canon chain
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eea8d6aa96
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801a13f791
@ -152,9 +152,14 @@ func NewBlockChain(chainDb ethdb.Database, config *params.ChainConfig, pow pow.P
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// Check the current state of the block hashes and make sure that we do not have any of the bad blocks in our chain
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for hash, _ := range BadHashes {
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if header := bc.GetHeaderByHash(hash); header != nil {
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glog.V(logger.Error).Infof("Found bad hash, rewinding chain to block #%d [%x…]", header.Number, header.ParentHash[:4])
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bc.SetHead(header.Number.Uint64() - 1)
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glog.V(logger.Error).Infoln("Chain rewind was successful, resuming normal operation")
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// get the canonical block corresponding to the offending header's number
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headerByNumber := bc.GetHeaderByNumber(header.Number.Uint64())
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// make sure the headerByNumber (if present) is in our current canonical chain
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if headerByNumber != nil && headerByNumber.Hash() == header.Hash() {
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glog.V(logger.Error).Infof("Found bad hash, rewinding chain to block #%d [%x…]", header.Number, header.ParentHash[:4])
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bc.SetHead(header.Number.Uint64() - 1)
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glog.V(logger.Error).Infoln("Chain rewind was successful, resuming normal operation")
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}
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}
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}
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// Take ownership of this particular state
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