[SOLVED] Function Returning Itself

Issue

Is it possible to declare some function type func_t which returns that type, func_t?

In other words, is it possible for a function to return itself?

// func_t is declared as some sort of function pointer
func_t foo(void *arg)
{
  return &foo;
}

Or would I have to use void * and typecasting?

Solution

No, you cannot declare recursive function types in C. Except inside a structure (or an union), it’s not possible to declare a recursive type in C.

Now for the void * solution, void * is only guaranteed to hold pointers to objects and not pointers to functions. Being able to convert function pointers and void * is available only as an extension.

Answered By – ouah

Answer Checked By – Willingham (BugsFixing Volunteer)