ghc: panic! (the 'impossible' happened) while building pandoc on a macbook

~/src/pandoc$ ghci -isrc src/pandoc.hs
GHCi, version 6.10.2: http://www.haskell.org/ghc/  :? for help
...
Loading package digest-0.0.0.5 ... linking ... done.
Loading package zip-archive-0.1.1.3 ... linking ... done.
[ 8 of 29] Compiling Text.Pandoc.LaTeXMathML ( src/Text/Pandoc/LaTeXMathML.hs, interpreted )
ghc: panic! (the 'impossible' happened)
  (GHC version 6.10.2 for i386-apple-darwin):
        linkBCO: >= 64k insns in BCO

Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

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