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Automatically merged updates to draft EIP(s) 1087 

Hi, I'm a bot! This change was automatically merged because:

 - It only modifies existing Draft or Last Call EIP(s)
 - The PR was approved or written by at least one author of each modified EIP
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Wei Tang 2018-08-18 03:40:29 +08:00 committed by EIP Automerge Bot
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@ -39,7 +39,7 @@ The following changes are made to the EVM:
- At the end of the transaction, for each slot in the dirty map:
- If the slot was 0 before the transaction and is 0 now, refund 19800 gas.
- If the slot was nonzero before the transaction and its value has not changed, refund 4800 gas.
- If the slot was nonzero before the transaction and is 0 now, refund 10000 gas.
- If the slot was nonzero before the transaction and is 0 now, refund 15000 gas.
After these changes, transactions that make only a single change to a storage slot will retain their existing costs. However, contracts that make multiple changes will see significantly reduced costs. Repeating the examples from the Motivation section: