poi1.c

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

// Build don't link:
// Origin: Gerald Pfeifer <[e-mail]>

template <class T>
class TLITERAL : public T 
    {
    int x;
    };

class GATOM;

typedef TLITERAL<GATOM> x;
extern TLITERAL<GATOM> y;