1  /* PR tree-optimization/37353 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2" } */
       4  
       5  extern double exp (double);
       6  
       7  #define A exp (arg);
       8  #define B A A A A A A A A A A
       9  #define C B B B B B B B B B B
      10  
      11  void
      12  foo (double arg)
      13  {
      14    C
      15  }