id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
876	Length is not a good consumer	ariep@…		"The program
{{{
module Main where

main = print $ length . filter odd $ [0 .. 999999999]
}}}
, compiled with ghc-6.5.20060508 or later with optimisation turned on (-O), overflows the stack when run. It seems that the generated code is not tail-recursive. 6.4.2 and 6.5 snapshots up to 20060507 do not have this problem.

This may be a silly example, but the same thing happens if you replace 'odd' with some more interesting predicate, and let the length of the input list be chosen by the user."	bug	closed	lowest	7.6.2	libraries/base	6.5	fixed	length	rich.neswold@… george.colpitts@…	Linux	Unknown/Multiple	Runtime performance bug	Unknown	perf/should_run/T876