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-rw-r--r--src/cryptonote_core/blockchain.cpp12
1 files changed, 10 insertions, 2 deletions
diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp
index 7015383fa..c052e3944 100644
--- a/src/cryptonote_core/blockchain.cpp
+++ b/src/cryptonote_core/blockchain.cpp
@@ -1188,8 +1188,16 @@ bool Blockchain::handle_alternative_block(const block& b, const crypto::hash& id
// FIXME:
// this brings up an interesting point: consider allowing to get block
// difficulty both by height OR by hash, not just height.
- auto main_chain_cumulative_difficulty = m_db->get_block_cumulative_difficulty(m_db->get_block_height(b.prev_id));
- bei.cumulative_difficulty = alt_chain.size() ? it_prev->second.cumulative_difficulty : main_chain_cumulative_difficulty;
+ difficulty_type main_chain_cumulative_difficulty = m_db->get_block_cumulative_difficulty(m_db->height() - 1);
+ if (alt_chain.size())
+ {
+ bei.cumulative_difficulty = it_prev->second.cumulative_difficulty;
+ }
+ else
+ {
+ // passed-in block's previous block's cumulative difficulty, found on the main chain
+ bei.cumulative_difficulty = m_db->get_block_cumulative_difficulty(m_db->get_block_height(b.prev_id));
+ }
bei.cumulative_difficulty += current_diff;
// add block to alternate blocks storage,