gcc/testsuite/consistency.vlad/layout/s-double-s-longdouble.c

   1 #include <stdio.h>
   2
   3 static struct sss{
   4   double f;
   5   struct {long double m;} snd;
   6 } sss;
   7
   8 #define _offsetof(st,f) ((char *)&((st *) 16)->f - (char *) 16)
   9
  10 int main (void) {
  11   printf ("+++Struct longdouble inside struct starting with double:\n");
  12   printf ("size=%d,align=%d\n", sizeof (sss), __alignof__ (sss));
  13   printf ("offset-double=%d,offset-sss-longdouble=%d,\nalign-double=%d,align-sss-longdouble=%d\n",
  14           _offsetof (struct sss, f), _offsetof (struct sss, snd),
  15           __alignof__ (sss.f), __alignof__ (sss.snd));
  16   return 0;
  17 }