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/* This testcase ICEd when 2 different successors of a basic block

   were successfully threaded and try_forward_edges was not expecting

   that.  */

typedef struct A

{

  struct A *s, *t;

  unsigned int u;

} A;

void bar (A *);

void

foo (A *x, A *y, A *z)

{

  while (y

         && (((y && y->t && y->t->u) ? y : z)->t

             == ((x && x->t && x->t->u) ? x : z)->t))

    y = y->s;

  if (y)

    bar (y);

}