Why AI Code Review Tools Keep Commenting on Lines That Don’t Exist
AI code review tools often struggle with accurately referencing line numbers in diffs, leading to comments on non-existent lines. This issue stems from the complexity of parsing unified diff formats, where additions and deletions can cause coordinate drift. While prompt engineering can improve accuracy, a deterministic verification step is necessary to validate comments against the actual diff structure before they are presented to developers. AI
IMPACT Highlights a critical limitation in current AI code review tools, emphasizing the need for deterministic validation layers to ensure reliability for developers.