gcc/testsuite/gcc.c-torture/execute/20000703-1.c

   1 void abort(void);
   2 void exit(int);
   3 struct baz
   4 {
   5   char a[17];
   6   char b[3];
   7   unsigned int c;
   8   unsigned int d;
   9 };
  10
  11 void foo(struct baz *p, unsigned int c, unsigned int d)
  12 {
  13   __builtin_memcpy (p->b, "abc", 3);
  14   p->c = c;
  15   p->d = d;
  16 }
  17
  18 void bar(struct baz *p, unsigned int c, unsigned int d)
  19 {
  20   ({ void *s = (p);
  21      __builtin_memset (s, '\0', sizeof (struct baz));
  22      s; });
  23   __builtin_memcpy (p->a, "01234567890123456", 17);
  24   __builtin_memcpy (p->b, "abc", 3);
  25   p->c = c;
  26   p->d = d;
  27 }
  28
  29 int main()
  30 {
  31   struct baz p;
  32   foo(&p, 71, 18);
  33   if (p.c != 71 || p.d != 18)
  34     abort();
  35   bar(&p, 59, 26);
  36   if (p.c != 59 || p.d != 26)
  37     abort();
  38   exit(0);
  39 }