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catalyst: check if block exists in assemble-block call with unknown parent-hash #22770

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Merged
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Apr 29, 2021
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catalyst: check if block exists in assemble-block call with unknown parent-hash #22770

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5 changes: 5 additions & 0 deletions eth/catalyst/api.go
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Original file line number Diff line number Diff line change
Expand Up @@ -109,6 +109,11 @@ func (api *consensusAPI) AssembleBlock(params assembleBlockParams) (*executableD

bc := api.eth.BlockChain()
parent := bc.GetBlockByHash(params.ParentHash)
if parent == nil {
log.Warn("Cannot assemble block with parent hash to unknown block", "parentHash", params.ParentHash)
return nil, fmt.Errorf("cannot assemble block with unknown parent %s", params.ParentHash)
}

pool := api.eth.TxPool()

if parent.Time() >= params.Timestamp {
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