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Xi Ge committed b58c3a2fb7d
[FixCode] Add @escaping when overriding mismatch is because of it. (#4273) * [FixCode] Add @escaping when overriding mismatch is because of it. rdar://27814862 With the change of default escaping behavior, users' existing code overriding objc functions may need to add @escaping to make the overriding match as before. This patch checks if an overriding mismatch is due to the lacking of @escaping and add it as a fixit. * [test] Update existing test. NFC