How can we know the caller function's name?

Question

In the C language, __FUNCTION__ can be used to get the current function\'s name. But if I define a function named a() and it is called

Answer 1

If you're only after knowing where you were for logging/debug purposes you can use a macro to avoid __func__ giving the name of your logging/debug function but of the function calling it.

Being in a macro will not result in a change to __func__ but will "feel" like using a function.

e.g.

#define LOG(s, data...) log("%s: "s, __function__, ## data)