You're not supposed to use the array, it's just supposed to exist on the stack. I'm not sure how to ensure the stack space isn't reclaimed; maybe we can do some

You're not supposed to use the array, it's just supposed to exist on the stack. I'm not sure how to ensure the stack space isn't reclaimed; maybe we can do something with declaring it up top, then putting the `if` that initializes it later on, and hope the compiler still reserves the stack space for huge_ary ahead of stack for other variables?