1  /* PR tree-optimization/59924 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O1 -Wall" } */
       4  
       5  struct S { struct T *a; double b; struct S *c; };
       6  struct T { struct S *d; };
       7  extern void bar (double);
       8  
       9  void
      10  foo (struct S * x, int y, int z, int w)
      11  {
      12    int e;
      13    struct S *f;
      14    for (f = x->a->d; f; f = f->c)
      15      {
      16        if (5 < w)
      17  	{
      18  	  e = -w;
      19  	  z = w;
      20  	}
      21      }
      22    if (y != 0 || z != 0)
      23      {
      24        double g = x->b + (double) e * (double) y; /* { dg-warning "may be used uninitialized" } */
      25        bar (g * g);
      26      }
      27  }