Re: [Haskell-cafe] IORef memory leak

I'm having some trouble with excessive memory use in a program that uses a lot of IORefs. I was able to write a much simpler program which exhibits the same sort of behavior. It appears that "modifyIORef" and "writeIORef" leak memory; perhaps they keep a reference to the old value. I tried both ghc-6.8.3 and ghc-6.10.1.

modifyIORef and writeIORef are not sufficiently strict for your needs. See this recent thread: http://www.nabble.com/Stack-overflow-td23746120.html Tim