1  /* { dg-do compile } */
       2  /* { dg-options "-O2" } */
       3  /* { dg-additional-options "-minline-stringops-dynamically" { target { i?86-*-* x86_64-*-* } } } */
       4  
       5  extern void abort (void);
       6  
       7  #define MAX_OFFSET (sizeof (long long))
       8  #ifndef MAX_COPY
       9  #define MAX_COPY (1024 + 8192)
      10  #endif
      11  #define MAX_EXTRA (sizeof (long long))
      12  
      13  #define MAX_LENGTH (MAX_OFFSET + MAX_COPY + MAX_EXTRA)
      14  
      15  static union {
      16    char buf[MAX_LENGTH];
      17    long long align_int;
      18    long double align_fp;
      19  } u;
      20  
      21  char A[MAX_LENGTH];
      22  
      23  int
      24  main ()
      25  {
      26    int off, len, i;
      27    char *p, *q;
      28  
      29    for (i = 0; i < MAX_LENGTH; i++)
      30      A[i] = 'A';
      31  
      32    for (off = 0; off < MAX_OFFSET; off++)
      33      for (len = 1; len < MAX_COPY; len++)
      34        {
      35  	for (i = 0; i < MAX_LENGTH; i++)
      36  	  u.buf[i] = 'a';
      37  
      38  	p = __builtin_memcpy (u.buf + off, A, len);
      39  	if (p != u.buf + off)
      40  	  abort ();
      41  
      42  	q = u.buf;
      43  	for (i = 0; i < off; i++, q++)
      44  	  if (*q != 'a')
      45  	    abort ();
      46  
      47  	for (i = 0; i < len; i++, q++)
      48  	  if (*q != 'A')
      49  	    abort ();
      50  
      51  	for (i = 0; i < MAX_EXTRA; i++, q++)
      52  	  if (*q != 'a')
      53  	    abort ();
      54        }
      55  
      56    return 0;
      57  }