Haddock dies with Maybe.fromJust: Nothing when using template haskell

[topi]

Given the files:

A.hs

{-# LANGUAGE TemplateHaskell #-}

module A where

import Language.Haskell.TH

f :: String -> Q [Dec]
f = undefined

B.hs

{-# LANGUAGE TemplateHaskell #-}

module B where

import A

$(f "abc")

And haddock (fresh from hackage):

$ haddock --version
Haddock version 2.4.2, (c) Simon Marlow 2006
Ported to use the GHC API by David Waern 2006-2008

My haddock dies with:

$ haddock --html -o temp A.hs B.hs haddock: internal Haddock or GHC error: Maybe.fromJust: Nothing

Is there no support for template haskell. :-(

[topi]

Forgot the code block:

$ haddock --html -o temp A.hs B.hs
haddock: internal Haddock or GHC error: Maybe.fromJust: Nothing

[topi]

The problem persists even with:

A.hs

{-# LANGUAGE TemplateHaskell #-}

module A where

import Language.Haskell.TH

f :: String -> Q [Dec]
f _ = return []

In case haddock is capable of executing template haskell code.

[waern]

This bug has been fixed. You need Haddock 2.4.2 built with GHC 6.10.2.

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[anonymous]

Milestone 2.4.2 deleted