Can't pass millions of arguments to a function.

[Jeremy Phelps]

I attempted to add a list of a million integers like this:

    (apply #'+ (loop repeat 1000000 collect (random 1000))

It does not come as a total surprise that this resulted in the message
"Control stack guard page temporarily disabled: proceed with caution", and
trying it again got me acquainted with the ldb> prompt.

But I'm reporting this as a bug anyway. What happened is reasonable, but not ideal behavior. The above operation should just work, no matter how long the list-of-integers is.

[Stas Boukarev (stassats)]

> The above operation should just work

But it can't work. The stack is a limited resource.

[Jeremy Phelps (username00001)]

It _can_ work. Just don't put &rest arguments on the stack.
In the end, you have to allocate cons cells for them anyway
so that the function sees a list.

Try this in Racket:

   (require (planet jphelps/loop))
   (apply + (loop repeat 1000000 collect (random 1000))

[Stas Boukarev (stassats)]

> Just don't put &rest arguments on the stack.

I love the way you say "just". "Just make all programs slow!". Let's start from the fact that the caller doesn't know that the callee is using &rest.

> In the end, you have to allocate cons cells for them anyway so that the function sees a list.

That's not true. No lists are allocated by the + function.

And after this, will it be "I can't call a recursive function a million times, please, allocate frames on the heap."?