On 13/03/2012 21:25, Ranjit Jhala wrote:
> Hi all,
>
> I'm trying to use the nifty backtracing mechanism in GHC 74.
> AFAICT, this requires everything be built with profiling on),
> but as a consequence, I hit this:
>
> "You can't call hscCompileCoreExpr in a profiled compiler"
>
> Any hints on whether there are work-arounds?

Can you give more details about what you're trying to do?  Are you using
the GHC API in some way?

I'm afraid there's something of a deep limitation in that the
interpreter that is used by GHCi and Template Haskell doesn't work with
profiling:

   http://hackage.haskell.org/trac/ghc/ticket/3360

We think it is quite a lot of work to fix this.

Cheers,
Simon

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