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blockchain: Fix alt chain generated coins overflow 

Apply the overflow logic used for computing already_generated_coins in
the main chain to alternative chains.
This commit is contained in:
iamamyth 2019-08-18 17:26:58 -07:00
parent 1bb4ae3b5e
commit 07cb087e5d
1 changed files with 2 additions and 1 deletions
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3
src/cryptonote_core/blockchain.cpp
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@ -1739,7 +1739,8 @@ bool Blockchain::handle_alternative_block(const block& b, const crypto::hash& id
const uint64_t prev_height = alt_chain.size() ? prev_data.height : m_db->get_block_height(b.prev_id);
bei.height = prev_height + 1;
uint64_t block_reward = get_outs_money_amount(b.miner_tx);
bei.already_generated_coins = block_reward + (alt_chain.size() ? prev_data.already_generated_coins : m_db->get_block_already_generated_coins(prev_height));
const uint64_t prev_generated_coins = alt_chain.size() ? prev_data.already_generated_coins : m_db->get_block_already_generated_coins(prev_height);
bei.already_generated_coins = (block_reward < (MONEY_SUPPLY - prev_generated_coins)) ? prev_generated_coins + block_reward : MONEY_SUPPLY;
// verify that the block's timestamp is within the acceptable range
// (not earlier than the median of the last X blocks)