overload4.c

gcc-you can use this code to learn something about gcc, and inquire further into linux,

// Build don't link:

template <class T> void foo(T);

template <class T> void bar(void (*)(T), T);

void baz() {
  bar<int>(foo, 1);
  bar(foo<int>, 1);
  bar<int>(foo<int>, 1);
  bar(foo, 1); 
}