1  /* PR optimization/8634 */
       2  /* Contributed by Glen Nakamura <glen at imodulo dot com> */
       3  
       4  extern void abort (void);
       5  
       6  struct foo {
       7    char a, b, c, d, e, f, g, h, i, j;
       8  };
       9  
      10  int test1 ()
      11  {
      12    const char X[8] = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H' };
      13    char buffer[8];
      14    __builtin_memcpy (buffer, X, 8);
      15    if (buffer[0] != 'A' || buffer[1] != 'B'
      16        || buffer[2] != 'C' || buffer[3] != 'D'
      17        || buffer[4] != 'E' || buffer[5] != 'F'
      18        || buffer[6] != 'G' || buffer[7] != 'H')
      19      abort ();
      20    return 0;
      21  }
      22  
      23  int test2 ()
      24  {
      25    const char X[10] = { 'A', 'B', 'C', 'D', 'E' };
      26    char buffer[10];
      27    __builtin_memcpy (buffer, X, 10);
      28    if (buffer[0] != 'A' || buffer[1] != 'B'
      29        || buffer[2] != 'C' || buffer[3] != 'D'
      30        || buffer[4] != 'E' || buffer[5] != '\0'
      31        || buffer[6] != '\0' || buffer[7] != '\0'
      32        || buffer[8] != '\0' || buffer[9] != '\0')
      33      abort ();
      34    return 0;
      35  }
      36  
      37  int test3 ()
      38  {
      39    const struct foo X = { a : 'A', c : 'C', e : 'E', g : 'G', i : 'I' };
      40    char buffer[10];
      41    __builtin_memcpy (buffer, &X, 10);
      42    if (buffer[0] != 'A' || buffer[1] != '\0'
      43        || buffer[2] != 'C' || buffer[3] != '\0'
      44        || buffer[4] != 'E' || buffer[5] != '\0'
      45        || buffer[6] != 'G' || buffer[7] != '\0'
      46        || buffer[8] != 'I' || buffer[9] != '\0')
      47      abort ();
      48    return 0;
      49  }
      50  
      51  int test4 ()
      52  {
      53    const struct foo X = { .b = 'B', .d = 'D', .f = 'F', .h = 'H' , .j = 'J' };
      54    char buffer[10];
      55    __builtin_memcpy (buffer, &X, 10);
      56    if (buffer[0] != '\0' || buffer[1] != 'B'
      57        || buffer[2] != '\0' || buffer[3] != 'D'
      58        || buffer[4] != '\0' || buffer[5] != 'F'
      59        || buffer[6] != '\0' || buffer[7] != 'H'
      60        || buffer[8] != '\0' || buffer[9] != 'J')
      61      abort ();
      62    return 0;
      63  }
      64  
      65  int main ()
      66  {
      67    test1 (); test2 (); test3 (); test4 ();
      68    return 0;
      69  }