1  /* { dg-do compile } */
       2  /* { dg-options "-Os -fdump-tree-optimized -save-temps" } */
       3  
       4  int
       5  f (char a)
       6  {
       7    return  __builtin_memchr ("a", a, 1) == 0;
       8  }
       9  
      10  /* { dg-final { scan-assembler-not "memchr" } } */