[Haskell-cafe] Haskell maximum stack depth

Stefan O'Rear stefanor at cox.net
Tue Jan 29 15:09:41 EST 2008

On Tue, Jan 29, 2008 at 09:28:56AM +0000, Neil Mitchell wrote:
> Hi Adrian,
> > The "bug" is in ghc stack management. Why is it so important that the
> > stack size is arbitrarily limited?
> It's not, but it makes some things easier and faster. A better
> question is why is it important for the stack to grow dynamically. The
> answer is that its not.

No, it is.  A single thread running a recursion-intensive program can
use many 10's of K's of stack; and 10's of K's per thread is not "cheap
threads".  GHC has had a dynamically growing stack for many years,
starting at 4k and redoubling when exhaused; the stack size limit is a
bug checker and nothing else.

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