During October 2025, Michael Bazley developed a Location interface for the eclipse-jdt/eclipse.jdt.core repository, standardizing how source positions are managed for ASTNode and InvocationSite. By introducing this abstraction in Java, he eliminated unsafe type casts in the compiler’s inference context, specifically addressing issues in InferenceContext18.solve(). His work in compiler design focused on improving type safety and reducing runtime risks, resulting in clearer and more maintainable code. This refactoring established a consistent, location-aware approach across the core, laying groundwork for future enhancements. The depth of the changes reflects a thoughtful application of software engineering principles to core compiler infrastructure.