1  /* { dg-do run } */
       2  /* { dg-options "-O2 -fdump-tree-optimized -save-temps" } */
       3  
       4  __attribute__ ((weak))
       5  int
       6  f (char a)
       7  {
       8     return  __builtin_memchr ("aEgZ", a, 3) == 0;
       9  }
      10  
      11  __attribute__ ((weak))
      12  int
      13  g (char a)
      14  {
      15    return a != 'a' && a != 'E' && a != 'g';
      16  }
      17  
      18  int
      19  main ()
      20  {
      21   for (int i = 0; i < 255; i++)
      22     if (f (i) != g (i))
      23       __builtin_abort ();
      24  
      25   return 0;
      26  }
      27  
      28  /* { dg-final { scan-assembler-not "memchr" } } */