g++ __FUNCTION__ replace time

Question

Can anyone tell when g++ replaces the __FUNCTION__ \'macro\' with the string containing the function name? It seems it can replace it not until it has check the

Answer 1

You are using __FUNCTION__ like a preprocessor macro, but it's a variable (please read http://gcc.gnu.org/onlinedocs/gcc/Function-Names.html).

Try printf("%s", __FUNCTION__) just for testing and it will print the function name.