February 2026 — dotnet/BenchmarkDotNet: Delivered a new Roslyn analyzer rule to prevent use of write-only properties with ParamsSource, strengthening static analysis and reducing subtle NullReferenceExceptions in benchmark parameter handling. The implementation ensures the analyzer skips properties without getters to avoid NullReferenceException when GetMethod is null during scanning, increasing robustness of diagnostics. This work is associated with commit c342c49f1b68d3e5e04bc05c5ad12b0e9140a7b1 and included targeted test fixes, with the rule added to unshipped to ensure early visibility before release. Business impact includes higher code quality, reduced runtime risk for parameterized benchmarks, and a smoother developer experience when adding ParamsSource-based scenarios.