Consider this test case:

int f() { return 23; }

template<typename T>
struct Base {
  int f() { return 13; }
};

template<typename T>
struct Derived : public Base<T> {
  int g() { return f(); }
};

int main()
{
  Derived<int> value;
  return value.g();
}

Here, Derived::g calls ::f, not Base::f.
This is due to a C++ name lookup rule, see:

http://gcc.gnu.org/onlinedocs/gcc/Name-lookup.html
http://gcc.gnu.org/wiki/VerboseDiagnostics#dependent_base

gdb implements this wrongly -- if you stop in g and try to call f,
gdb will try to call Base::f.