fix: Implement correct balance updating logic #4692
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Co-authored-by: Austin Larson <[email protected]> Signed-off-by: Jonathan Oppenheimer <[email protected]>
Co-authored-by: Austin Larson <[email protected]> Signed-off-by: Jonathan Oppenheimer <[email protected]>
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Relevant comment: ava-labs/subnet-evm#1745 (comment) |
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Why this should be merged
Previously
upgradeAccountwould naively assume that anyupgrade.BalanceChangewas positive, even though the underlying BalanceChange was aBig.Int, which can be negative. This meant that negative balance updates would be interpreted as positive updates, which is strange, and arguably incorrect behavior. This PR correctly implements the balance changing behavior, and adds checks to ensure account balances are not updated to non-sensical values. Closes #4719How this was tested
I added a new test file,
state_upgrade_test.go.This behavior was seemingly not tested prior.Need to be documented?
I don't think so - we are not exposing any additional API methods, we're just fixing an existing one.
Need to update RELEASES.md?
No