static int ref(void){  union {    char c[5];    int i;  } u;  __builtin_memset (&u, 0, sizeof(u));  u.c[0] = 1;  u.c[1] = 2;  u.c[2] = 3;  u.c[3] = 4;  return u.i;}#define MAX(a,b)  (a < b ? b : a)static int test(void){  char c[MAX(5, sizeof(int))] __attribute__((aligned)) = { 1, 2, 3, 4 };  return *(int *)c;}int main(){  int a = test();  int b = ref();  if (a != b)    abort ();  return 0;}