1  /* { dg-do run } */
       2  /* { dg-options "-O2 -mstringop-strategy=unrolled_loop -mtune=nocona" } */
       3  
       4  #define PATTERN 0xdeadbeef
       5  #define SIZE    32
       6  
       7  struct S { int i; char str[SIZE]; int j; };
       8  
       9  void __attribute__((noclone, noinline))
      10  my_memcpy (char *, const char *, unsigned int);
      11  
      12  void
      13  my_memcpy (char *dst, const char *src, unsigned int len)
      14  {
      15    if (len < 8)
      16      __builtin_abort ();
      17  
      18    __builtin_memcpy (dst, src, len);
      19  }
      20  
      21  int
      22  main (void)
      23  {
      24    const char str[SIZE]= "1234567890123456789012345678901";
      25    struct S *s = __builtin_malloc (sizeof (struct S));
      26  
      27    s->j = PATTERN;
      28    my_memcpy (s->str, str, SIZE);
      29    if (s->j != PATTERN)
      30      __builtin_abort ();
      31  
      32    return 0;
      33  }