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Merge pull request #3732

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fa0839f Ensure m_timestamps has the correct number for computing difficulty. (thaerkh)
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luigi1111 2018-06-16 14:05:53 -05:00
commit fb2b16f10a
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src/cryptonote_core/blockchain.cpp
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@ -827,7 +827,7 @@ difficulty_type Blockchain::get_difficulty_for_next_block()
// then when the next block difficulty is queried, push the latest height data and
// pop the oldest one from the list. This only requires 1x read per height instead
// of doing 735 (DIFFICULTY_BLOCKS_COUNT).
if (m_timestamps_and_difficulties_height != 0 && ((height - m_timestamps_and_difficulties_height) == 1))
if (m_timestamps_and_difficulties_height != 0 && ((height - m_timestamps_and_difficulties_height) == 1) && m_timestamps.size() >= DIFFICULTY_BLOCKS_COUNT)
{
uint64_t index = height - 1;
m_timestamps.push_back(m_db->get_block_timestamp(index));