nested2.c

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

// Build don't link:
// by Bert Bril <[e-mail]>

struct M1 {
    struct I                            {};
};
 
struct M2 {
    struct I                            {};
    struct J : virtual public M2::I,
               virtual public M1::I     {};
};