GCC Tail Call Optimization for the Following Situation

Question

Below is a snippet that gets programmatically generated for a toy programming language, actual code is different but following shows what it does when executed,

class Base{ };

Base b;

class Derived{
      int fibo(int i){
        if(i SMALLER 2)
          return 1;
        else
          return (Derived)b.fibo(i-1) + (Derived)b.fibo(i-2);
      }
};

//then somewhere in main

b = new Derived();
int i = (Derived)b.fibo(10);

My question is will GCC consider this for tail call elimination?

EDIT: Turns out my my view of TOC is a bit flawed, so in a different case a different function with a single return positioned at the tail, would that be considered for optimization? The reason I ask is that there bunch of scheme to c compilers and AFAIK scheme mandates TOC so there must be a way to force this?