Subversion Repositories openrisc_2011-10-31

/* Test for bitfield alignment in structs and unions.  */

/* { dg-do run { target pcc_bitfield_type_matters } }  */

/* { dg-options "-O2" }  */

extern void abort (void);

extern void exit (int);

typedef long la __attribute__((aligned (8)));

struct A

{

  char a;

  union UA

  {

    char x;

    la y : 6;

  } b;

  char c;

} a;

struct B

{

  char a;

  union UB

  {

    char x;

    long y : 6 __attribute__((aligned (8)));

  } b;

  char c;

} b;

struct C

{

  char a;

  struct UC

  {

    la y : 6;

  } b;

  char c;

} c;

struct D

{

  char a;

  struct UD

  {

    long y : 6 __attribute__((aligned (8)));

  } b;

  char c;

} d;

int main (void)

{

  if (sizeof (a) != sizeof (b))

    abort ();

  if (sizeof (a) != sizeof (c))

    abort ();

  if (sizeof (a) != sizeof (d))

    abort ();

  if ((&a.c - &a.a) != (&b.c - &b.a))

    abort ();

  if ((&a.c - &a.a) != (&c.c - &c.a))

    abort ();

  if ((&a.c - &a.a) != (&d.c - &d.a))

    abort ();

  exit (0);

}