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/* { dg-do run } */

/* { dg-options "-fplan9-extensions" } */

/* When using -fplan9-extensions, we support automatic conversion of

   pointer types, and we support referring to a typedef name

   directly.  */

extern void exit (int);

extern void abort (void);

struct A { char a; };

struct B {

  char b;

  struct A;

  char c;

};

void

f1 (struct A *p)

{

  p->a = 1;

}

void

test1 (void)

{

  struct B b;

  struct A *p;

  b.b = 2;

  b.c = 3;

  f1 (&b);

  if (b.a != 1)

    abort ();

  if (b.b != 2 || b.c != 3)

    abort ();

  p = &b;

  if (p->a != 1)

    abort ();

}

typedef struct { char d; } D;

struct E {

  char b;

  struct F { char f; };

  char c;

  union {

    D;

  };

  char e;

};

void

f2 (struct F *p)

{

  p->f = 6;

}

void

f3 (D *p)

{

  p->d = 4;

}

void

f4 (D d)

{

}

void

test2 (void)

{

  struct E e;

  struct F *pf;

  D *pd;

  D d;

  e.b = 2;

  e.c = 3;

  e.e = 5;

  f2 (&e);

  f3 (&e);

  if (e.d != 4)

    abort ();

  if (e.f != 6)

    abort ();

  if (e.b != 2 || e.c != 3 || e.e != 5)

    abort ();

  pf = &e;

  if (pf->f != 6)

    abort ();

  pd = &e;

  if (pd->d != 4)

    abort ();

  d = e.D;

  f3 (&e.D);

  f4 (e.D);

}

int

main ()

{

  test1 ();

  test2 ();

  exit (0);

}