1  /* PR optimization/12198
       2  
       3     This was a miscompilation of a switch expressions because
       4     the "Case Ranges" extension wasn't handled in tree-cfg.c.  */
       5  
       6  /* { dg-do compile } */
       7  /* { dg-options "-O -fdump-tree-optimized" } */
       8  
       9  extern void abort (void);
      10  extern void exit (int);
      11  
      12  int main() 
      13  { 
      14     int i; 
      15     i = 2; 
      16     switch (i) 
      17        { 
      18        case 1 ... 5: 
      19           goto L1; 
      20        default: 
      21           abort (); 
      22           goto L1; 
      23        } 
      24     L1: 
      25     exit(0); 
      26  }
      27  
      28  /* The abort() call clearly is unreachable.  */
      29  /* { dg-final { scan-tree-dump-times "abort" 0 "optimized"} } */