Check pindexBestForkBase for null
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@ -1211,13 +1211,13 @@ void CheckForkWarningConditions()
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if (pindexBestForkTip || (pindexBestInvalid && pindexBestInvalid->nChainWork > chainActive.Tip()->nChainWork + (chainActive.Tip()->GetBlockWork() * 6)))
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{
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if (!fLargeWorkForkFound)
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if (!fLargeWorkForkFound && pindexBestForkBase)
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{
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std::string warning = std::string("'Warning: Large-work fork detected, forking after block ") +
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pindexBestForkBase->phashBlock->ToString() + std::string("'");
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CAlert::Notify(warning, true);
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}
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if (pindexBestForkTip)
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if (pindexBestForkTip && pindexBestForkBase)
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{
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LogPrintf("CheckForkWarningConditions: Warning: Large valid fork found\n forking the chain at height %d (%s)\n lasting to height %d (%s).\nChain state database corruption likely.\n",
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pindexBestForkBase->nHeight, pindexBestForkBase->phashBlock->ToString(),
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