During April 2025, Dross contributed to the rust-lang/gcc repository by addressing a performance issue in the Ada frontend. He implemented a targeted fix in Ada.Strings.Superbounded, modifying the assertion policy to ignore ghost predicates at runtime. This change, achieved by setting Ghost_Predicate to Ignore in the pragma Assertion_Policy, reduced unnecessary runtime overhead and improved predictability in Ada string handling. Dross validated the performance gains and ensured regression safety, demonstrating expertise in Ada programming and compiler development. His work focused on precise, minimal changes that aligned with project goals, and he documented the update thoroughly for review and integration.