fix: max gas allowed per transaction

[dinhani-cw]

No description provided.

[github-actions]

PR Review 🔍

⏱️ Estimated effort to review [1-5]	2, because the changes are localized to a few lines and involve straightforward additions such as a constant definition and a minimal logic change in the gas limit handling. The context and impact of the changes are clear, making the review process relatively simple.
🧪 Relevant tests	No
⚡ Possible issues	Possible Bug: The use of min to cap the gas_limit might not account for scenarios where input.gas_limit could be of a different type or unexpectedly large, potentially leading to incorrect behavior if not properly validated or cast.
🔒 Security concerns	No

Code feedback:

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relevant file	src/eth/evm/revm.rs
suggestion	Consider adding a type check or ensuring that input.gas_limit is of a compatible type before using it in the min function to prevent type mismatches or overflow issues. [important]
relevant line	tx_env.gas_limit = min(input.gas_limit.into(), GAS_MAX_LIMIT);

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relevant file	src/eth/evm/revm.rs
suggestion	It might be beneficial to log or handle cases where the gas_limit is reduced due to exceeding GAS_MAX_LIMIT. This could aid in debugging and operational monitoring. [medium]
relevant line	tx_env.gas_limit = min(input.gas_limit.into(), GAS_MAX_LIMIT);

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[github-actions]

PR Code Suggestions ✨

Category	Suggestion	Score
Security	Use checked arithmetic operations to prevent potential integer overflow It's a good practice to handle potential integer overflow when performing operations like minimum comparison between gas limits. Rust provides checked operations for integers that return None on overflow. Using input.gas_limit.into().checked_min(GAS_MAX_LIMIT) ensures that the operation is safe from overflow. src/eth/evm/revm.rs [135] -tx_env.gas_limit = min(input.gas_limit.into(), GAS_MAX_LIMIT); +tx_env.gas_limit = input.gas_limit.into().checked_min(GAS_MAX_LIMIT).unwrap_or(GAS_MAX_LIMIT); Suggestion importance[1-10]: 9 Why: This suggestion addresses a potential security issue by using checked arithmetic operations to prevent integer overflow. This is a significant improvement in terms of code safety and robustness.	9
Enhancement	Rename the constant to provide clearer context Consider using a more descriptive name for the constant GAS_MAX_LIMIT to reflect its purpose and context more clearly. For instance, MAX_TRANSACTION_GAS_LIMIT provides immediate context that this limit is specific to transactions. src/eth/evm/revm.rs [59] -const GAS_MAX_LIMIT: u64 = 1_000_000_000; +const MAX_TRANSACTION_GAS_LIMIT: u64 = 1_000_000_000; Suggestion importance[1-10]: 7 Why: The suggestion to rename GAS_MAX_LIMIT to MAX_TRANSACTION_GAS_LIMIT improves code clarity by making the constant's purpose more explicit. However, the original name is not incorrect, so this is a minor enhancement.	7
Maintainability	Add a comment explaining the rationale behind setting the gas limit To improve the maintainability and readability of the code, consider adding a brief comment above the line where tx_env.gas_limit is set. This comment should explain why the minimum of input.gas_limit and GAS_MAX_LIMIT is used, especially for future developers or reviewers who might not be familiar with the context. src/eth/evm/revm.rs [135] +// Set the gas limit to the lesser of the input limit and the maximum allowed to prevent excessive resource use. tx_env.gas_limit = min(input.gas_limit.into(), GAS_MAX_LIMIT); Suggestion importance[1-10]: 6 Why: Adding a comment to explain the rationale behind setting the gas limit improves code maintainability and readability. While helpful, it is not critical, hence a moderate score.	6
Best practice	Import only the min function explicitly to avoid potential naming conflicts and improve clarity To ensure that the min function is used correctly and efficiently, consider explicitly importing only the min function from the std::cmp module at the beginning of the file. This helps in avoiding the entire cmp module's scope being accessible, which can prevent potential naming conflicts and improve code clarity. src/eth/evm/revm.rs [8] +use std::cmp::min; - Suggestion importance[1-10]: 3 Why: The suggestion to explicitly import only the min function is correct but offers minimal improvement in this context. The likelihood of naming conflicts is low, and the current import is already clear.	3