ghc crashes on trying to build encoding module

It gets this far:

Building encoding-0.4...
[ 7 of 37] Compiling Data.Encoding.CP1258 ( Data/Encoding/CP1258.hs, dist/build/Data/Encoding/CP1258.o )
Loading package base ... linking ... done.
Loading package pretty-1.0.0.0 ... linking ... done.
Loading package array-0.1.0.0 ... linking ... done.
Loading package packedstring-0.1.0.0 ... linking ... done.
Loading package containers-0.1.0.1 ... linking ... done.
Loading package template-haskell ... linking ... done.
Loading package bytestring-0.9.0.1 ... linking ... done.
ghc-6.8.2: internal error: loadObj: can't map `dist/build/Data/Encoding/Helper/Template.o'
    (GHC version 6.8.2 for i386_unknown_linux)
    Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug