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 :).

module mini.norun_debug3;

void main()
{
    int i = 42;
    int* ip = &i;

    int* fail;
    *fail = 0;
}