XCode 9: This block declaration is not a prototype

[Jan-E]

XCode 9 with the recommended settings issues a warning for 3 lines. Suggested fixes:

In the .h file

-- (void)exportAsynchronouslyWithCompletionHandler:(void (^)())handler;
+- (void)exportAsynchronouslyWithCompletionHandler:(void (^)(void))handler;

In the .m file

-@property (nonatomic, strong) void (^completionHandler)();
+@property (nonatomic, strong) void (^completionHandler)(void);

and

-- (void)exportAsynchronouslyWithCompletionHandler:(void (^)())handler
+- (void)exportAsynchronouslyWithCompletionHandler:(void (^)(void))handler

@rs Would there be any problem to change these lines with the recommended fixes?

[3257]

This could help you. It is a little different than your question but I think they are related anyways. https://stackoverflow.com/questions/44473146/this-function-declaration-is-not-a-prototype-warning-in-xcode-9