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fix(contracts): OZ-N04 Implicit Type Casting #907

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merged 2 commits into from Sep 1, 2023

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@zimpha zimpha commented Sep 1, 2023

Purpose or design rationale of this PR

This PR partially fixed the issue reported by Openzepplin (N-04 Implicit Type Casting) during ScrollOwner and Rate Limiter audit. The following are the details:

In the ETHRateLimiter contract, the variables _currentPeriod.lastUpdateTs and _currentPeriodStart are being compared. However, _currentPeriod.lastUpdateTs's type is uint48 and _currentPeriodStart's type is uint256.

Consider explicitly type-casting variables of different types when they are compared or used in the same calculation. This ensures consistency in computations and reduces the risk of errors resulting from data loss.

PR title

Your PR title must follow conventional commits (as we are doing squash merge for each PR), so it must start with one of the following types:

  • fix: A bug fix

Deployment tag versioning

Has tag in common/version.go been updated or have you added bump-version tag to this PR?

  • No, this PR doesn't involve a new deployment, git tag, docker image tag
  • Yes

Breaking change label

Does this PR have the breaking-change label?

  • No, this PR is not a breaking change
  • Yes

@zimpha zimpha added the bug Something isn't working label Sep 1, 2023
@zimpha zimpha self-assigned this Sep 1, 2023
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github-actions bot commented Sep 1, 2023

LCOV of commit df9416f during Contracts #1368

Summary coverage rate:
  lines......: 52.6% (992 of 1885 lines)
  functions..: 67.3% (222 of 330 functions)
  branches...: no data found

Files changed coverage rate: n/a

@HAOYUatHZ HAOYUatHZ merged commit 2e1f42f into develop Sep 1, 2023
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@HAOYUatHZ HAOYUatHZ deleted the fix/OZ-N04_implicit_type_casting branch September 1, 2023 11:45
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2 participants