I wrote:

...

Try running haddock on this:

module HaddockBug where { -- |The 'square' function squares an integer. square :: Int -> Int; square x = x * x; }

$ haddock -B /usr/lib/ghc-6.8.2/ HaddockBug.hs

HaddockBug.hs:4:0: parse error on input `square' haddock: Failed to load all needed modules

It works fine if you remove the haddock comment...

I discovered a work-around: put a semicolon after the haddock comment.

module HaddockBug where { -- |The 'square' function squares an integer. ; square :: Int -> Int; square x = x * x; }

-- Ashley Yakeley Seattle, WA

Thanks for the report. This is a known bug though, and it's due to the fact that Haddock comments are handled just like any other declaration in the GHC grammar. This should be changed, so that the placement of Haddock comments doesn't depend on layout, but I never got around to fix it during the Summer of Code project. I will update the TODO file to include this bug. David