RE: [Haskell-cafe] what is a stack overflow?

On 25 January 2005 16:04, S. Alexander Jacobson wrote:

Ok. I guessed I was producing a big expression of the form

addToFM (addToFM (addToFM (addToFM (addToFM ...)

I tried to solve it by doing

(addToFM $! fm) key val

But still got an error. I then tried the same with the wrapper code, but still got the error.

Is there a way to profile stack usage using GHCi (without compiling) to find the problem?

+RTS -xt -RTS will include the stack in a heap profile. See http://www.haskell.org/ghc/docs/latest/html/users_guide/prof-heap.html It will show you the size of the stack over time, but not the contents of the stack. Cheers, Simon