1  /* PR middle-end/18520 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2 -ffast-math" } */
       4  
       5  extern int isnan (double __value) __attribute__ ((__const__));
       6  
       7  int gsl_isnan (const double x)
       8  {
       9    return isnan(x);
      10  }
      11