gcc/testsuite/consistency.vlad/layout/class-char-and-virtual.cpp

   1 #include <stdio.h>
   2
   3 static class sss {
   4 public:
   5   char m;
   6   virtual int f (int i) {return i;}
   7 } sss;
   8
   9 #define _offsetof(st,f) ((char *)&((st *) 16)->f - (char *) 16)
  10
  11 int main (void) {
  12   printf ("+++Class starting with char and containing virtual function:\n");
  13   printf ("size=%d,align=%d\n", sizeof (sss), __alignof__ (sss));
  14   printf ("offset-m=%d,align-m=%d\n",
  15           _offsetof (class sss, m), __alignof__ (sss.m));
  16 }