Subversion Repositories scarts

typedef typeof(sizeof(char)) Size_t;

#define bufsize ((1L << (8 * sizeof(Size_t) - 2))-256)

struct huge_struct

{

  short buf[bufsize];

  int a;

  int b;

  int c;

  int d;

};

union huge_union

{

  int a;

  char buf[bufsize];

};

unsigned long union_size()

{

  return sizeof(union huge_union);

}

unsigned long struct_size()

{

  return sizeof(struct huge_struct);

}

unsigned long struct_a_offset()

{

  return (unsigned long)(&((struct huge_struct *) 0)->a);

}

int main()

{

  /* Check the exact sizeof value. bufsize is aligned on 256b. */

  if (union_size() != sizeof(char) * bufsize)

    abort();

  if (struct_size() != sizeof(short) * bufsize + 4*sizeof(int))

    abort();

  if (struct_a_offset() < sizeof(short) * bufsize)

    abort();

  return 0;

}