Subversion Repositories openrisc

extern void abort (void);

struct A

{

  struct A *a;

};

struct B

{

  struct A *b;

};

__attribute__((noinline))

struct A *

foo (struct A *x)

{

  asm volatile ("" : : "g" (x) : "memory");

  return x;

}

__attribute__((noinline))

void

bar (struct B *w, struct A *x, struct A *y, struct A *z)

{

  struct A **c;

  c = &w->b;

  *c = foo (x);

  while (*c)

    c = &(*c)->a;

  *c = foo (y);

  while (*c)

    c = &(*c)->a;

  *c = foo (z);

}

struct B d;

struct A e, f, g;

int

main (void)

{

  f.a = &g;

  bar (&d, &e, &f, 0);

  if (d.b == 0

      || d.b->a == 0

      || d.b->a->a == 0

      || d.b->a->a->a != 0)

    abort ();

  return 0;

}