id	summary	reporter	owner	description	type	status	priority	milestone	version	resolution	keywords	cc
92	foldl' within Foldable instance seems broken	MikeIzbicki		"When I run this piece of code:

{{{
import qualified Data.Vector as V
import qualified Data.Foldable as F
size=10^8
main = do
    print $ (V.foldl (+) 0 $ (V.enumFromN (0::Double) size) :: Double)
    print $ (V.foldl' (+) 0 $ (V.enumFromN (0::Double) size) :: Double)
    print $ (F.foldl (+) 0 $ (V.enumFromN (0::Double) size) :: Double)
    print $ (F.foldl' (+) 0 $ (V.enumFromN (0::Double) size) :: Double)
    putStrLn ""done.""

}}}

The first three numbers print almost instantly, but the last number takes forever to print.  The profiler is telling me that the garbage collector is going off like mad.  Shouldn't F.foldl' be the exact same thing as V.foldl'?"	defect	new	major				performance