Update AttrDocs.td to note that adding or removing __attribute__((objc_class_stub)) breaks ABI
Update AttrDocs.td to note that adding or removing __attribute__((objc_class_stub)) breaks ABI

apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang