1  /* { dg-do compile } */
       2  /* { dg-additional-options "-Wuninitialized" } */
       3  
       4  int foo (int x, int *val)
       5  {
       6    switch (x)
       7      {
       8  #define C(n) \
       9      case n + 0: return *val; \
      10      case n + 1: return *val; \
      11      case n + 2: return *val; \
      12      case n + 3: return *val; \
      13      case n + 4: return *val; \
      14      case n + 5: return *val; \
      15      case n + 6: return *val; \
      16      case n + 7: return *val; \
      17      case n + 8: return *val; \
      18      case n + 9: return *val;
      19  #define C1(n) \
      20      C(n+00) C(n+10) C(n+20) C(n+30) C(n+40) \
      21      C(n+50) C(n+60) C(n+70) C(n+80) C(n+90)
      22  #define C10(n) \
      23      C1(n+000) C1(n+100) C1(n+200) C1(n+300) C1(n+400) \
      24      C1(n+500) C1(n+600) C1(n+700) C1(n+800) C1(n+900)
      25      C10(1000)
      26      }
      27    return 0;
      28  }