Re: [Haskell-cafe] Flattening tail recursion?

On 10 Dec 2004, at 15:34, Robert Dockins wrote:

So it should get "flattened," but it still doesn't run in constant space because the "x" parmeter isn't strict, so it will accumulate a bunch of closures like (((((((0)+1)+1)+1)+1)+1).... To make it strict, do something like this:

Isn't this what the strictness analyser is for? Doesn't GHC know that + for Int is strict in both arguments, and therefore it shouldn't accumulate a great big thunk like that? Jules