Clean up some suspicious code. There's no guarantee a constant of integer type is a ConstantInt, so it's not safe to just cast<> these to ConstantInt. (It could be a constant expression, for example) The code is shorter this way too :).

extern(C) int printf(char*, ...);

void main()
{
     int[0][10] arr;
     printf("%u\n", &arr[9] - &arr[0]);
     int[0] arr1;
     printf("%p\n", &arr1);
     void[0] arr2;
     printf("%p\n", &arr2);
}