1  /* { dg-do run } */
       2  /* { dg-options "-O1" } */
       3  
       4  extern void *memcpy (void *, const void *, __SIZE_TYPE__);
       5  extern int memcmp (const void *, const void *, __SIZE_TYPE__);
       6  extern void abort(void);
       7  
       8  char str[9] = "1234";
       9  
      10  void
      11  bar (void)
      12  {
      13  #if __SIZEOF_INT__ >= 4
      14    unsigned int temp;
      15  #else
      16    __UINT32_TYPE__ temp;
      17  #endif
      18    char *p = &str[2];
      19  
      20    memcpy (&temp, &str[1], 4);
      21    memcpy (p, &temp, 4);
      22    str[1] = '.';
      23  }
      24  
      25  int main()
      26  {
      27    bar();
      28    if (memcmp (str, "1.234", 5) != 0)
      29      abort ();
      30  
      31    return 0;
      32  }