[Python-Dev] Limiting the recursion limit (original) (raw)

Guido van Rossum guido at python.org
Wed Jan 11 18:34:28 CET 2006


On 1/11/06, skip at pobox.com <skip at pobox.com> wrote:

>>> sys.setrecursionlimit(1<<30)_ _>>> f = lambda f:f(f) >>> f(f) Segmentation fault Is there some way that Python can determine that 1<<30 is an unreasonable recursion limit?

Yes, but that doesn't help -- there's some value in the middle where you may or may not get a crash depending on random other stuff that is going on, and the only way to know is to try. It's easy enough to code a loop that tries higher and higher values until it finds a crash.

-- --Guido van Rossum (home page: http://www.python.org/~guido/)



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