fix(patch): resolve overlapping exclusive access errors in library evolution mode#14
fix(patch): resolve overlapping exclusive access errors in library evolution mode#14
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… mode Restructure buffer access patterns to avoid simultaneous inout borrows of sibling stored properties, which the compiler rejects in resilient (library evolution) builds where it cannot prove disjointness. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Summary of ChangesHello, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request resolves critical compiler errors that occur in Swift's library evolution mode due to strict exclusive access rules. By refactoring how internal buffers are accessed within the fuzzy matching algorithms, it ensures that multiple mutable properties can be safely used simultaneously without triggering runtime or compile-time violations, thereby improving the library's resilience and compatibility with future Swift versions. Highlights
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #14 +/- ##
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Coverage 98.64% 98.64%
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Files 41 41
Lines 9031 9047 +16
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+ Hits 8908 8924 +16
Misses 123 123
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Code Review
This pull request effectively resolves an "overlapping exclusive access" compiler error in Swift's library evolution mode by refactoring buffer access patterns. The changes in FuzzyMatcher.swift and ScoringBuffer.swift correctly apply standard Swift patterns to work around simultaneous inout borrows. The implementation is clean and well-documented. I have one suggestion in ScoringBuffer.swift to use a defer statement, which would make the resource cleanup more robust and idiomatic.
| let result = localBytes.withUnsafeMutableBufferPointer { bytesPtr in | ||
| localBonus.withUnsafeMutableBufferPointer { bonusPtr in | ||
| body(bytesPtr.baseAddress!, bonusPtr.baseAddress!) | ||
| } | ||
| } | ||
| swap(&localBytes, &bytes) | ||
| swap(&localBonus, &bonus) | ||
| return result |
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Using a defer block to swap the arrays back would make this code more robust and idiomatic. While the current implementation is correct because the body closure doesn't throw, defer guarantees that the cleanup logic (swapping back the arrays) is executed right before the function returns. This is especially useful if the function's logic becomes more complex or if the closure's signature is changed to be throwing in the future.
defer {
swap(&localBytes, &bytes)
swap(&localBonus, &bonus)
}
return localBytes.withUnsafeMutableBufferPointer { bytesPtr in
localBonus.withUnsafeMutableBufferPointer { bonusPtr in
body(bytesPtr.baseAddress!, bonusPtr.baseAddress!)
}
}
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Pull request had an unknown failure |
2 participants
Restructure buffer access patterns to avoid simultaneous inout borrows of sibling stored properties, which the compiler rejects in resilient (library evolution) builds where it cannot prove disjointness.
Description
Include a summary of the change and which issue is fixed.
Fixes #issue-number
How Has This Been Tested?
Please describe the tests that you ran to verify your changes.
Checklist
///comments) for any new public APIsswift test)