forked from DecentralizedClimateFoundation/DCIPs
52 lines
1.9 KiB
Markdown
52 lines
1.9 KiB
Markdown
---
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eip: 4803
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title: Limit transaction gas to a maximum of 2^63-1
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description: Valid transactions must have a reasonable gas limit
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author: Alex Beregszaszi (@axic)
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discussions-to: https://ethereum-magicians.org/t/eip-4803-limit-transaction-gas-to-a-maximum-of-2-63-1/8296
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status: Stagnant
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type: Standards Track
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category: Core
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created: 2022-02-02
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---
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## Abstract
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Limit transaction gas to be between `0` and `2^63-1`.
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## Motivation
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The gas limit field in the transaction is specified to be an arbitrary long unsigned integer, but various clients put limits on this value. This EIP brings a reasonable limit into consensus.
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## Specification
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Introduce one new restrictions retroactively from genesis: any transaction is invalid and not includeable in a block, where the gas limit exceeds `2^63-1`.
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## Rationale
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### `2^63-1` vs `2^64-1`
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`2^63-1` is chosen because it allows representing the gas value as a signed integer, and so the out of gas check can be done as a simple "less than zero" check after subtraction.
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### Current limit
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Due to the nature of RLP encoding, there is no fixed upper bound for the value, but most implementations limit it to 256-bits. Furthermore, most client implementations (such as geth) internally handle gas as a 64-bit value.
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## Backwards Compatibility
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While this is a breaking change, no actual effect should be visible.
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Before [EIP-1559](./eip-1559.md) it was possible to include transactions with `gasPrice = 0` and thus the `gasLimit * gasPrice <= accountBalance` calculation could have allowed for arbitrarily large values of `gasLimit`. However, the rule that the transaction list cannot exceed the block gas limit, and the strict rules about how the block gas limit can change, prevented arbitrarily large values of `gasLimit` to be in the historical state.
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## Security Considerations
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None.
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## Test Cases
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TBA
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## Copyright
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Copyright and related rights waived via [CC0](../LICENSE.md).
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