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Ensure pindexPrev is not null before mining against it in both BitcoinMiner and RandomXMiner

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This commit is contained in:
Duke Leto
2022-09-18 10:27:48 -04:00
parent 9b1b6fdc2e
commit 8e1ba0658d
1 changed files with 16 additions and 0 deletions
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16
src/miner.cpp
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@@ -1102,6 +1102,14 @@ void static RandomXMiner()
// Create new block // Create new block
unsigned int nTransactionsUpdatedLast = mempool.GetTransactionsUpdated(); unsigned int nTransactionsUpdatedLast = mempool.GetTransactionsUpdated();
CBlockIndex* pindexPrev = chainActive.LastTip(); CBlockIndex* pindexPrev = chainActive.LastTip();
// If we don't have a valid chain tip to work from, wait and try again.
if (pindexPrev == nullptr) {
fprintf(stderr,"%s: null pindexPrev, trying again...\n",__func__);
MilliSleep(1000);
continue;
}
if ( Mining_height != pindexPrev->GetHeight()+1 ) if ( Mining_height != pindexPrev->GetHeight()+1 )
{ {
Mining_height = pindexPrev->GetHeight()+1; Mining_height = pindexPrev->GetHeight()+1;
@@ -1460,6 +1468,14 @@ void static BitcoinMiner()
// //
unsigned int nTransactionsUpdatedLast = mempool.GetTransactionsUpdated(); unsigned int nTransactionsUpdatedLast = mempool.GetTransactionsUpdated();
CBlockIndex* pindexPrev = chainActive.LastTip(); CBlockIndex* pindexPrev = chainActive.LastTip();
// If we don't have a valid chain tip to work from, wait and try again.
if (pindexPrev == nullptr) {
fprintf(stderr,"%s: null pindexPrev, trying again...\n",__func__);
MilliSleep(1000);
continue;
}
if ( Mining_height != pindexPrev->GetHeight()+1 ) if ( Mining_height != pindexPrev->GetHeight()+1 )
{ {
Mining_height = pindexPrev->GetHeight()+1; Mining_height = pindexPrev->GetHeight()+1;