January 2026 monthly summary for golang/go focusing on compiler stability and zero-size array handling in the Go compiler. Key change: fixed a divide-by-zero error when generating equality signatures for arrays with zero-size elements, ensuring stability and correctness of equality signature generation for such arrays. The patch updates the compile path to skip generating comparison code for zero-size elements (e.g., [3]struct{_ [0]float64}) to prevent crashes and unnecessary work. Impact: eliminates a crash scenario in the compiler when encountering zero-size arrays, improving reliability for users and downstream tooling that rely on correct equality signature generation. This work helps prevent regressions in edge-case code and contributes to overall compiler robustness. Process: the change was reviewed and integrated through the Go repository's review system, with multiple reviewers (e.g., Cherry Mui, Cuong Manh Le, Keith Randall) and referencing issue #77303. Auto-submission and CI pathways were followed.