1  /* { dg-do compile } */
       2  /* { dg-options "-O1 -funsafe-math-optimizations" } */
       3  
       4  float a;
       5  float b;
       6  void bar ()
       7  {
       8    a = __builtin_nanf ("");
       9    b = __builtin_powf (a, 2.5F);
      10  }