reassign ghc After some further debug, I found this is, in fact, a ghc bug and it was fixed in version 8.0.2, as showed in:
https://ghc.haskell.org/trac/ghc/ticket/12621 _______________________________________________ Pkg-haskell-maintainers mailing list Pkg-haskell-maintainers@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-haskell-maintainers
