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Re: [Chicken-users] Unbounded stack growth

From: Marc Feeley
Subject: Re: [Chicken-users] Unbounded stack growth
Date: Wed, 11 Jul 2012 15:49:55 -0400

On 2012-07-11, at 2:31 PM, John Cowan wrote:

> Marc Feeley scripsit:
>> In this example, there will be an arbitrarily long sequence of C calls
>> (in the unwinding of the recursion to even) with no Scheme call, so
>> stack size checks will not be performed during the unwinding, yet the
>> C stack grows during the unwinding.  There is no stack overflow during
>> the winding phase of the recursion because the stack size checks are
>> performed at regular intervals (at each entry to even).
> While you're right, it's not clear that this matters enough to fix.
> It's not a *correctness* error, since every implementation will blow up
> on excessive recursion sooner or later when memory is exhausted.

And I should have mentionned that in the case of Spock, which compiled to 
JavaScript, it crashes much sooner (with n < 10000 on V8).


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