[Haskell-cafe] Finding Memory Leaks

Jason Dagit dagit at codersbase.com
Thu Nov 2 22:05:44 EST 2006

On 11/2/06, SevenThunders <mattcbro at earthlink.net> wrote:
> SevenThunders wrote:
> >
> >   All my code is compiled using the -prof -auto
> > flag and then run using +RTS -hc -RTS.  The resulting plots do not show
> > a linear increase in heap usage, although the Windows XP operating
> > system does report such an increase.
> >
> >
> This is either a bug in GHC or a bug in the profiler or both unless I am
> mistaken.
> The bug seems to arise when using FFI and using the wrapper mode for  a
> Haskell callback.
> A pointer to the Haskell wrapper is created on the fly and then supposedly
> released by freeHaskellFunPtr.
> Unfortunately, at least under Windows XP 64 on my amd x2 3800 box, memory
> grows without bound.  Even worse, however is the fact that profiling this
> function does not reveal the leak at all.  It shows a constant memory
> profile.

Do any memory leaks show up if you compile with -caf-all when you profile?


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