Subtle bug in Data.ByteString and/or GHC (perhaps)

Donald Bruce Stewart dons at
Mon Jun 18 21:17:00 EDT 2007

> On Mon, 18 Jun 2007, Nils Anders Danielsson <nad at> wrote:
> > I tried the most recent darcs version of binary, and the problem
> > appears to have been fixed, presumably by the patch replacing
> > inlinePerformIO with unsafePerformIO.
> It turns out that, although the code I posted earlier in this thread
> now works, the larger piece of code which I am actually interested in
> running does not...
> I guess this is the price you pay for using libraries which make use
> of RULES pragmas and unsafePerformIO and friends.

Please submit an updated bug report.

-- Don

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