gnu/dist/gcc4/gcc/testsuite/gcc.c-torture/execute/20030408-1.c

   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 }