#include class c{ public: char * f; }; class c2{ public: char f2; }; static class sss: public c, public c2{ public: char * m; } sss; #define _offsetof(st,f) ((char *)&((st *) 16)->f - (char *) 16) int main (void) { printf ("++Class with pointer inhereting classes with pointer & char:\n"); printf ("size=%d,align=%d\n", sizeof (sss), __alignof__ (sss)); printf ("offset-f=%d,offset-f2=%d,offset-m=%d,\nalign-f=%d,align-f2=%d,align-m=%d\n", _offsetof (class sss, f), _offsetof (class sss, f2), _offsetof (class sss, m), __alignof__ (sss.f), __alignof__ (sss.f2), __alignof__ (sss.m)); return 0; }