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{-
From: Marc van Dongen <dongen@cs.ucc.ie>
Date: Wed, 9 Apr 1997 14:06:39 +0100 (BST)
I just wanted to report that the erroneous and tiny
program added below can not be compiled within 6MB of
heap (Admitted it can be compiled with a bigger heap).
It was part of a bigger program that could not be
compiled within 20MB of heap.
[GHC 2.03 and earlier.] Turned out to be a bug in the
error recovery mechanism.
-}
module ShouldFail where
too_much :: [Int] -> [(Int,Int)] -> [(Int,[Int])] -> Bool
too_much ds ((k,m):q1) s0
= case (list1,list2) of
[] -> error "foo" -- too_much ds q2m s2m
where list1 = ds
list2 = ds
{-
list1 = [k' | k' <- ds, k == k']
list2 = [k' | k' <- ds, m == k']
s1 = aas s0 k
raM = []
raKM = listUnion (\a b -> a) [] []
s1k = s1
q1k = raM
s2k = s1
q2k = raM
s2m = s1
q2m = raM
s2km = foldr (flip aas) s1 raKM
q2km = raKM
-}
listUnion :: (v -> v -> Bool) -> [v] -> [v] -> [v]
listUnion _ _ _
= []
aas :: (a,b) -> a -> (a,b)
aas s _
= s
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