p.cpp

#include <cstdio>

template<class T>
class Pointer
{
    T *v;
public:
    Pointer(T *t) : v(t) {}
    __attribute__((used))
    T *operator ->()
    {
        return v;
    }
    __attribute__((used))
    T& operator *()
    {
        return *v;
    }
};

__attribute__((noinline))
void test(Pointer<char *> p)
{
    puts(*p);
}

int main(int argc, char **argv)
{
    test(argv);
}