Massive slowdown in mwc-random after switching to use of primitive package

[Bryan O'Sullivan]

On Mon, Jul 12, 2010 at 10:40 AM, Bryan O'Sullivan <bos at serpentine.com>wrote:

>
> I can probably cook up a smaller repro than Dan, since I depend on neither
> package for a standalone test case. Let me get cracking on it promptly, and
> I'll file a ticket later.
>

I filed http://hackage.haskell.org/trac/ghc/ticket/4184 just now, which
includes two workarounds that I found for my particular version of the
problem, the second of which I stumbled upon quite by accident while
creating the standalone repro.
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