1  /* { dg-do compile } */
       2  
       3  #define X(new,old) int i ## new = i ## old + i ## old;
       4  #define Y(pfx) X(pfx ## 1, pfx) \
       5    X(pfx ## 2, pfx ## 1) \
       6    X(pfx ## 3, pfx ## 2) \
       7    X(pfx ## 4, pfx ## 3) \
       8    X(pfx ## 5, pfx ## 4) \
       9    X(pfx ## 6, pfx ## 5) \
      10    X(pfx ## 7, pfx ## 6) \
      11    X(pfx ## 8, pfx ## 7) \
      12    X(pfx ## 9, pfx ## 8)
      13  
      14  void foo (int i1)
      15  {
      16    Y(1)
      17    Y(11)
      18    Y(111)
      19    asm ("" : : "X" (i1));
      20  }