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/* http://gcc.gnu.org/ml/gcc-patches/2004-02/msg01307.html */

typedef struct xdef xdef;

struct xdef

{

  char xtyp;

  xdef *next;

  int y;

};

extern void b ();

extern void *foo (void *bar);

extern void *foo2 (void *bar1, void *bar2);

extern void *qwe;

static void

c (xdef * xp)

{

  b (xp);

}

static void

a (xdef ** xpp)

{

  xdef *xp;

  xp = *xpp;

  foo (xp);

  xp = foo2 (xp, qwe);

  b (xp->next);

  foo (xp);

  if (xp->y)

  {

    foo (xp);

    if (xp)

    {

      xdef *p = foo2 (xp, qwe);

      foo2 (xp, p);

      xp = foo (p);

    }

    else

    {

      foo2 (foo(*xpp), *xpp);

    }

  }

  *xpp = foo2 (xpp, qwe);

}

void

b (xdef ** xpp)

{

  xdef *xp = *xpp;

  if (!xp)

    return;

  if (xp->xtyp == 0)

    a (xpp);

  c (xp);

}