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fix nil exception

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This commit is contained in:
AnilChinchawale 2018-12-04 14:29:07 +05:30
parent 4a12d746ff
commit 6d3bcd918f
1 changed files with 10 additions and 6 deletions
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16
miner/worker.go
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@ -552,7 +552,11 @@ func (self *worker) commitNewWork() {
if atomic.LoadInt32(&self.mining) == 1 {
header.Coinbase = self.coinbase
}
if err := self.engine.Prepare(self.chain, self.current.state, header); err != nil {
state := &state.StateDB{}
if self.current != nil {
state = self.current.state
}
if err := self.engine.Prepare(self.chain, state, header); err != nil {
log.Error("Failed to prepare header for new block", "err", err)
return
}
@ -612,12 +616,12 @@ func (self *worker) commitNewWork() {
delete(self.possibleUncles, hash)
}
}
// Create the new block to seal with the consensus engine
if work.Block, err = self.engine.Finalize(self.chain, header, work.state, work.txs, uncles, work.receipts); err != nil {
log.Error("Failed to finalize block for sealing", "err", err)
return
}
if atomic.LoadInt32(&self.mining) == 1 {
// Create the new block to seal with the consensus engine
if work.Block, err = self.engine.Finalize(self.chain, header, work.state, work.txs, uncles, work.receipts); err != nil {
log.Error("Failed to finalize block for sealing", "err", err)
return
}
log.Info("Committing new block", "number", work.Block.Number(), "txs", work.tcount, "special txs", len(specialTxs), "uncles", len(uncles), "elapsed", common.PrettyDuration(time.Since(tstart)))
self.unconfirmed.Shift(work.Block.NumberU64() - 1)
self.lastParentBlockCommit = parent.Hash().Hex()