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/* { dg-do compile } */

/* No special options--in particular, turn off the default

   -pedantic-errors option.  */

/* { dg-options "" } */

/* When not using -fplan9-extensions, we don't support automatic

   conversion of pointer types, and we don't 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;             /* { dg-warning "does not declare anything" } */

  char c;

};

void

f1 (struct A *p)        /* { dg-message "expected" } */

{

  p->a = 1;

}

void

test1 (void)

{

  struct B b;

  struct A *p;

  b.b = 2;

  b.c = 3;

  f1 (&b);              /* { dg-warning "incompatible pointer type" } */

  if (b.a != 1)         /* { dg-error "no member" } */

    abort ();

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

    abort ();

  p = &b;               /* { dg-warning "incompatible pointer type" } */

  if (p->a != 1)

    abort ();

}

typedef struct { char d; } D;

struct E {

  char b;

  struct F { char f; }; /* { dg-warning "does not declare anything" } */

  char c;

  union {

    D;                  /* { dg-warning "does not declare anything" } */

  };

  char e;

};

void

f2 (struct F *p)        /* { dg-message "expected" } */

{

  p->f = 6;

}

void

f3 (D *p)               /* { dg-message "expected" } */

{

  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);              /* { dg-warning "incompatible pointer type" } */

  f3 (&e);              /* { dg-warning "incompatible pointer type" } */

  if (e.d != 4)         /* { dg-error "no member" } */

    abort ();

  if (e.f != 6)         /* { dg-error "no member" } */

    abort ();

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

    abort ();

  pf = &e;              /* { dg-warning "incompatible pointer type" } */

  if (pf->f != 6)

    abort ();

  pd = &e;              /* { dg-warning "incompatible pointer type" } */

  if (pd->d != 4)

    abort ();

  d = e.D;              /* { dg-error "no member" } */

  f3 (&e.D);            /* { dg-error "no member" } */

  f4 (e.D);             /* { dg-error "no member" } */

}

int

main ()

{

  test1 ();

  test2 ();

  exit (0);

}