[Haskell-cafe] foldl and space problems

[Gracjan Polak]

Hello,

My space problems continued...

I have foldl that produces list, some combining function and quite large 
source list:

let xyz = foldl f state myBigList

This setting should lazyli consume myBigList when next elements of xyz 
are demanded. Except that it seems that myBigList is held by state to 
the end of computation :(

Question: is there any way to see what is holding my source list? I did 
try to guess, but without results as of now:(

How do I debug and/or reason about such situation?

-- 
Gracjan