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BlockchainLMDB: Remove tx outputs in reverse order

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Data should be removed in the reverse order it was added.

This matches the order of removal in
blockchain_storage::pop_transaction_from_global_index.
This commit is contained in:
warptangent 2015-12-24 12:22:09 -08:00
parent d0e434f0d8
commit f11def012f
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GPG key ID: 0E490BEBFBE4E92D
1 changed files with 5 additions and 5 deletions
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10
src/blockchain_db/lmdb/db_lmdb.cpp
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@ -722,15 +722,15 @@ void BlockchainLMDB::remove_tx_outputs(const crypto::hash& tx_hash, const transa
size_t num_elems = 0; size_t num_elems = 0;
mdb_cursor_count(cur, &num_elems); mdb_cursor_count(cur, &num_elems);
mdb_cursor_get(cur, &k, &v, MDB_FIRST_DUP); mdb_cursor_get(cur, &k, &v, MDB_LAST_DUP);
for (uint64_t i = 0; i < num_elems; ++i) for (uint64_t i = num_elems; i > 0; --i)
{ {
const tx_out tx_output = tx.vout[i]; const tx_out tx_output = tx.vout[i-1];
remove_output(*(const uint64_t*)v.mv_data, tx_output.amount); remove_output(*(const uint64_t*)v.mv_data, tx_output.amount);
if (i < num_elems - 1) if (i > 1)
{ {
mdb_cursor_get(cur, &k, &v, MDB_NEXT_DUP); mdb_cursor_get(cur, &k, &v, MDB_PREV_DUP);
} }
} }
} }