Swift 6.3 Stabilizes Android SDK, Extends C Interop, and More
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Swift update adds official Android support and improved C interoperability.
Summary
Swift 6.3 stabilizes the Android SDK for native development, introduces the @c attribute for automatic C header generation, and adds module selectors to disambiguate cross-module calls. It includes weak let for concurrency-safe weak references, @specialize and @inline(always) for compiler optimization control, and advances Embedded Swift with unified linking and Swift SMMIO for memory-mapped I/O.