Only check cache validity for witnesses being incremented or decremented
Fixes the bug resulting from #1904.
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@ -645,10 +645,14 @@ void CWallet::IncrementNoteWitnesses(const CBlockIndex* pindex,
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for (std::pair<const uint256, CWalletTx>& wtxItem : mapWallet) {
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for (mapNoteData_t::value_type& item : wtxItem.second.mapNoteData) {
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CNoteData* nd = &(item.second);
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// Check the validity of the cache
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assert(nWitnessCacheSize >= nd->witnesses.size());
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// Only increment witnesses that are behind the current height
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if (nd->witnessHeight < pindex->nHeight) {
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// Check the validity of the cache
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// The only time a note witnessed above the current height
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// would be invalid here is during a reindex when blocks
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// have been decremented, and we are incrementing the blocks
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// immediately after.
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assert(nWitnessCacheSize >= nd->witnesses.size());
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// Witnesses being incremented should always be either -1
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// (never incremented or decremented) or one below pindex
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assert((nd->witnessHeight == -1) ||
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@ -687,10 +691,11 @@ void CWallet::IncrementNoteWitnesses(const CBlockIndex* pindex,
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for (std::pair<const uint256, CWalletTx>& wtxItem : mapWallet) {
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for (mapNoteData_t::value_type& item : wtxItem.second.mapNoteData) {
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CNoteData* nd = &(item.second);
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// Check the validity of the cache
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assert(nWitnessCacheSize >= nd->witnesses.size());
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if (nd->witnessHeight < pindex->nHeight &&
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nd->witnesses.size() > 0) {
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// Check the validity of the cache
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// See earlier comment about validity.
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assert(nWitnessCacheSize >= nd->witnesses.size());
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nd->witnesses.front().append(note_commitment);
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}
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}
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@ -735,9 +740,10 @@ void CWallet::IncrementNoteWitnesses(const CBlockIndex* pindex,
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CNoteData* nd = &(item.second);
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if (nd->witnessHeight < pindex->nHeight) {
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nd->witnessHeight = pindex->nHeight;
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// Check the validity of the cache
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// See earlier comment about validity.
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assert(nWitnessCacheSize >= nd->witnesses.size());
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}
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// Check the validity of the cache
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assert(nWitnessCacheSize >= nd->witnesses.size());
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}
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}
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@ -754,10 +760,12 @@ void CWallet::DecrementNoteWitnesses(const CBlockIndex* pindex)
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for (std::pair<const uint256, CWalletTx>& wtxItem : mapWallet) {
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for (mapNoteData_t::value_type& item : wtxItem.second.mapNoteData) {
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CNoteData* nd = &(item.second);
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// Check the validity of the cache
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assert(nWitnessCacheSize >= nd->witnesses.size());
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// Only increment witnesses that are not above the current height
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if (nd->witnessHeight <= pindex->nHeight) {
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// Check the validity of the cache
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// See comment below (this would be invalid if there was a
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// prior decrement).
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assert(nWitnessCacheSize >= nd->witnesses.size());
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// Witnesses being decremented should always be either -1
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// (never incremented or decremented) or equal to pindex
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assert((nd->witnessHeight == -1) ||
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@ -776,7 +784,18 @@ void CWallet::DecrementNoteWitnesses(const CBlockIndex* pindex)
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for (mapNoteData_t::value_type& item : wtxItem.second.mapNoteData) {
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CNoteData* nd = &(item.second);
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// Check the validity of the cache
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assert(nWitnessCacheSize >= nd->witnesses.size());
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// Technically if there are notes witnessed above the current
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// height, their cache will now be invalid (relative to the new
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// value of nWitnessCacheSize). However, this would only occur
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// during a reindex, and by the time the reindex reaches the tip
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// of the chain again, the existing witness caches will be valid
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// again.
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// We don't set nWitnessCacheSize to zero at the start of the
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// reindex because the on-disk blocks had already resulted in a
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// chain that didn't trigger the assertion below.
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if (nd->witnessHeight < pindex->nHeight) {
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assert(nWitnessCacheSize >= nd->witnesses.size());
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}
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}
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}
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// TODO: If nWitnessCache is zero, we need to regenerate the caches (#1302)
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