Disallow NSLog to be used

Question

Is it possible to disallow the use of NSLog, so that it will come up as an error if used at compile time? Ideally some sort of compiler flag with the name of the method that is disallowed?

Thanks

Answer 1

If you re-declare NSLog (and perhaps also NSLogv) as

void NSLog(NSString *format, ...) UNAVAILABLE_ATTRIBUTE;
void NSLogv(NSString *format, va_list args) UNAVAILABLE_ATTRIBUTE;

in your precompiled header file, you get a nice error message:

main.m:199:3: error: 'NSLog' is unavailable
                NSLog(@"%@", s1);
                ^

---

You can even provide a custom error message (found in Messages on deprecated and unavailable Attributes of the Clang documentation):

void NSLog(NSString *format, ...) __attribute__((unavailable("You should not do this!")));

main.m:202:3: error: 'NSLog' is unavailable: You should not do this!
                NSLog(@"%@", s1);
                ^