1  /* { dg-do compile } */
       2  int x;
       3  volatile unsigned int y;
       4  
       5  #define REPEAT10(X, Y)					\
       6    X(Y##0); X(Y##1); X(Y##2); X(Y##3); X(Y##4);		\
       7    X(Y##5); X(Y##6); X(Y##7); X(Y##8); X(Y##9)
       8  
       9  #define REPEAT30(X) REPEAT10 (X, 0); REPEAT10 (X, 1); REPEAT10 (X, 2)
      10  #define IN(X) unsigned int x##X = y
      11  #define OUT(X) y = x##X
      12  
      13  void __attribute__ ((interrupt_handler)) f1 (void)
      14  {
      15    x = y + 11;
      16  }
      17  
      18  void __attribute__ ((interrupt_handler)) f2 (void)
      19  {
      20    REPEAT30 (IN);
      21    REPEAT30 (OUT);
      22  }