derived3.c

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

// Build don't link:
// crash test -

// by Paul Burchard <[e-mail]>, Level Set Systems, Inc.
// Copyright (C) 1999, 2002 Free Software Foundation

template<class T>
class X {
	class Y : public T {};
	Y y;			// ERROR - invalid base type
};
int main() {
	X<int> x;		// ERROR - instantiated
}