diff options
| -rw-r--r-- | src/coins.cpp | 10 | ||||
| -rw-r--r-- | src/coins.h | 2 | ||||
| -rw-r--r-- | src/main.cpp | 12 |
3 files changed, 11 insertions, 13 deletions
diff --git a/src/coins.cpp b/src/coins.cpp index f0ea5c0459..660181b0c4 100644 --- a/src/coins.cpp +++ b/src/coins.cpp @@ -117,11 +117,17 @@ CCoinsModifier CCoinsViewCache::ModifyCoins(const uint256 &txid) { return CCoinsModifier(*this, ret.first, cachedCoinUsage); } -CCoinsModifier CCoinsViewCache::ModifyNewCoins(const uint256 &txid) { +// ModifyNewCoins has to know whether the new outputs its creating are for a +// coinbase or not. If they are for a coinbase, it can not mark them as fresh. +// This is to ensure that the historical duplicate coinbases before BIP30 was +// in effect will still be properly overwritten when spent. +CCoinsModifier CCoinsViewCache::ModifyNewCoins(const uint256 &txid, bool coinbase) { assert(!hasModifier); std::pair<CCoinsMap::iterator, bool> ret = cacheCoins.insert(std::make_pair(txid, CCoinsCacheEntry())); ret.first->second.coins.Clear(); - ret.first->second.flags = CCoinsCacheEntry::FRESH; + if (!coinbase) { + ret.first->second.flags = CCoinsCacheEntry::FRESH; + } ret.first->second.flags |= CCoinsCacheEntry::DIRTY; return CCoinsModifier(*this, ret.first, 0); } diff --git a/src/coins.h b/src/coins.h index 3b45cb0a34..77b4d56482 100644 --- a/src/coins.h +++ b/src/coins.h @@ -428,7 +428,7 @@ public: * would not properly overwrite the first coinbase of the pair. Simultaneous modifications * are not allowed. */ - CCoinsModifier ModifyNewCoins(const uint256 &txid); + CCoinsModifier ModifyNewCoins(const uint256 &txid, bool coinbase); /** * Push the modifications applied to this cache to its base. diff --git a/src/main.cpp b/src/main.cpp index 8fb121c00d..3c9c77ef67 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -1310,17 +1310,9 @@ void UpdateCoins(const CTransaction& tx, CValidationState &state, CCoinsViewCach undo.nVersion = coins->nVersion; } } - // add outputs - inputs.ModifyNewCoins(tx.GetHash())->FromTx(tx, nHeight); - } - else { - // add outputs for coinbase tx - // In this case call the full ModifyCoins which will do a database - // lookup to be sure the coins do not already exist otherwise we do not - // know whether to mark them fresh or not. We want the duplicate coinbases - // before BIP30 to still be properly overwritten. - inputs.ModifyCoins(tx.GetHash())->FromTx(tx, nHeight); } + // add outputs + inputs.ModifyNewCoins(tx.GetHash(), tx.IsCoinBase())->FromTx(tx, nHeight); } void UpdateCoins(const CTransaction& tx, CValidationState &state, CCoinsViewCache &inputs, int nHeight) |