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Fix fast-shutdown crash if genesis block was not loaded

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If the ShutdownRequested() check at the top of ActivateBestChain()
returns false during initial genesis block load we will fail an
assertion in UTXO DB flush as the best block hash IsNull(). To work
around this, we move the check until after one round of
ActivateBestChainStep(), ensuring the genesis block gets connected.
This commit is contained in:
Matt Corallo 2018-02-06 13:38:54 -05:00
parent 1c9394ad47
commit dd2de47c62
1 changed files with 7 additions and 3 deletions
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10
src/validation.cpp
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@ -2581,9 +2581,6 @@ bool CChainState::ActivateBestChain(CValidationState &state, const CChainParams&
SyncWithValidationInterfaceQueue();
}
if (ShutdownRequested())
break;
const CBlockIndex *pindexFork;
bool fInitialDownload;
{
@ -2630,6 +2627,13 @@ bool CChainState::ActivateBestChain(CValidationState &state, const CChainParams&
}
if (nStopAtHeight && pindexNewTip && pindexNewTip->nHeight >= nStopAtHeight) StartShutdown();
// We check shutdown only after giving ActivateBestChainStep a chance to run once so that we
// never shutdown before connecting the genesis block during LoadChainTip(). Previously this
// caused an assert() failure during shutdown in such cases as the UTXO DB flushing checks
// that the best block hash is non-null.
if (ShutdownRequested())
break;
} while (pindexNewTip != pindexMostWork);
CheckBlockIndex(chainparams.GetConsensus());