gcc/testsuite/gcc.dg/array-init-2.c

   1 /* Test array initializion by store_by_pieces.  */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2" } */
   4
   5 struct A { char c[10]; };
   6 extern void abort (void);
   7
   8 void
   9 __attribute__((noinline))
  10 check (struct A * a, int b)
  11 {
  12   const char *p;
  13   switch (b)
  14     {
  15     case 0:
  16       p = "abcdefghi";
  17       break;
  18     case 1:
  19       p = "j\0\0\0\0\0\0\0\0";
  20       break;
  21     case 2:
  22       p = "kl\0\0\0\0\0\0\0";
  23       break;
  24     case 3:
  25       p = "mnop\0\0\0\0\0";
  26       break;
  27     case 4:
  28       p = "qrstuvwx\0";
  29       break;
  30     default:
  31       abort ();
  32     }
  33   if (__builtin_memcmp (a->c, p, 10) != 0)
  34     abort ();
  35 }
  36
  37 int
  38 main (void)
  39 {
  40   struct A a = { "abcdefghi" };
  41   check (&a, 0);
  42   struct A b = { "j" };
  43   check (&b, 1);
  44   struct A c = { "kl" };
  45   check (&c, 2);
  46   struct A d = { "mnop" };
  47   check (&d, 3);
  48   struct A e = { "qrstuvwx" };
  49   check (&e, 4);
  50   return 0;
  51 }