1  /* { dg-do run } */
       2  /* { dg-options "-O2 -fdump-tree-strlen" } */
       3  
       4  #include "strlenopt.h"
       5  
       6  int
       7  main ()
       8  {
       9    char p[] = "foobar";
      10    int len, len2;
      11    len = strlen (p);
      12    p[0] = 'O';
      13    len2 = strlen (p);
      14    return len - len2;
      15  }
      16  
      17  /* { dg-final { scan-tree-dump-times "strlen \\(" 0 "strlen1" } } */