\ No newline at end of file
diff --git a/html-test/src/UnboxedStuff.hs b/html-test/src/UnboxedStuff.hs
new file mode 100644
index 0000000000..bd1b1302da
--- /dev/null
+++ b/html-test/src/UnboxedStuff.hs
@@ -0,0 +1,18 @@
+{-# LANGUAGE UnboxedSums, UnboxedTuples #-}
+module UnboxedStuff where
+
+data X
+data Y
+data Z
+
+-- * Unboxed type constructors
+
+unboxedUnit :: (# #) -> (# #)
+unboxedUnit = undefined
+
+unboxedTuple :: (# X, Y #) -> (# X, Y, Z #)
+unboxedTuple = undefined
+
+unboxedSum :: (# X | Y #) -> (# X | Y | Z #)
+unboxedSum = undefined
+
diff --git a/latex-test/ref/UnboxedStuff/UnboxedStuff.tex b/latex-test/ref/UnboxedStuff/UnboxedStuff.tex
new file mode 100644
index 0000000000..36d5c12b91
--- /dev/null
+++ b/latex-test/ref/UnboxedStuff/UnboxedStuff.tex
@@ -0,0 +1,36 @@
+\haddockmoduleheading{UnboxedStuff}
+\label{module:UnboxedStuff}
+\haddockbeginheader
+{\haddockverb\begin{verbatim}
+module UnboxedStuff (
+ X, Y, Z, unboxedUnit, unboxedTuple, unboxedSum
+ ) where\end{verbatim}}
+\haddockendheader
+
+\begin{haddockdesc}
+\item[\begin{tabular}{@{}l}
+data\ X
+\end{tabular}]
+\end{haddockdesc}
+\begin{haddockdesc}
+\item[\begin{tabular}{@{}l}
+data\ Y
+\end{tabular}]
+\end{haddockdesc}
+\begin{haddockdesc}
+\item[\begin{tabular}{@{}l}
+data\ Z
+\end{tabular}]
+\end{haddockdesc}
+\section{Unboxed type constructors}
+\begin{haddockdesc}
+\item[
+unboxedUnit\ ::\ ({\char '43}\ {\char '43})\ ->\ ({\char '43}\ {\char '43})
+]
+\item[
+unboxedTuple\ ::\ ({\char '43}\ X,\ Y\ {\char '43})\ ->\ ({\char '43}\ X,\ Y,\ Z\ {\char '43})
+]
+\item[
+unboxedSum\ ::\ ({\char '43}\ X\ |\ Y\ {\char '43})\ ->\ ({\char '43}\ X\ |\ Y\ |\ Z\ {\char '43})
+]
+\end{haddockdesc}
\ No newline at end of file
diff --git a/latex-test/ref/UnboxedStuff/haddock.sty b/latex-test/ref/UnboxedStuff/haddock.sty
new file mode 100644
index 0000000000..6e031a98b6
--- /dev/null
+++ b/latex-test/ref/UnboxedStuff/haddock.sty
@@ -0,0 +1,57 @@
+% Default Haddock style definitions. To use your own style, invoke
+% Haddock with the option --latex-style=mystyle.
+
+\usepackage{tabulary} % see below
+
+% make hyperlinks in the PDF, and add an expandabale index
+\usepackage[pdftex,bookmarks=true]{hyperref}
+
+\newenvironment{haddocktitle}
+ {\begin{center}\bgroup\large\bfseries}
+ {\egroup\end{center}}
+\newenvironment{haddockprologue}{\vspace{1in}}{}
+
+\newcommand{\haddockmoduleheading}[1]{\chapter{\texttt{#1}}}
+
+\newcommand{\haddockbeginheader}{\hrulefill}
+\newcommand{\haddockendheader}{\noindent\hrulefill}
+
+% a little gap before the ``Methods'' header
+\newcommand{\haddockpremethods}{\vspace{2ex}}
+
+% inserted before \\begin{verbatim}
+\newcommand{\haddockverb}{\small}
+
+% an identifier: add an index entry
+\newcommand{\haddockid}[1]{\haddocktt{#1}\index{#1@\texttt{#1}}}
+
+% The tabulary environment lets us have a column that takes up ``the
+% rest of the space''. Unfortunately it doesn't allow
+% the \end{tabulary} to be in the expansion of a macro, it must appear
+% literally in the document text, so Haddock inserts
+% the \end{tabulary} itself.
+\newcommand{\haddockbeginconstrs}{\begin{tabulary}{\linewidth}{@{}llJ@{}}}
+\newcommand{\haddockbeginargs}{\begin{tabulary}{\linewidth}{@{}llJ@{}}}
+
+\newcommand{\haddocktt}[1]{{\small \texttt{#1}}}
+\newcommand{\haddockdecltt}[1]{{\small\bfseries \texttt{#1}}}
+
+\makeatletter
+\newenvironment{haddockdesc}
+ {\list{}{\labelwidth\z@ \itemindent-\leftmargin
+ \let\makelabel\haddocklabel}}
+ {\endlist}
+\newcommand*\haddocklabel[1]{\hspace\labelsep\haddockdecltt{#1}}
+\makeatother
+
+% after a declaration, start a new line for the documentation.
+% Otherwise, the documentation starts right after the declaration,
+% because we're using the list environment and the declaration is the
+% ``label''. I tried making this newline part of the label, but
+% couldn't get that to work reliably (the space seemed to stretch
+% sometimes).
+\newcommand{\haddockbegindoc}{\hfill\\[1ex]}
+
+% spacing between paragraphs and no \parindent looks better
+\parskip=10pt plus2pt minus2pt
+\setlength{\parindent}{0cm}
diff --git a/latex-test/ref/UnboxedStuff/main.tex b/latex-test/ref/UnboxedStuff/main.tex
new file mode 100644
index 0000000000..e34c5f1402
--- /dev/null
+++ b/latex-test/ref/UnboxedStuff/main.tex
@@ -0,0 +1,11 @@
+\documentclass{book}
+\usepackage{haddock}
+\begin{document}
+\begin{titlepage}
+\begin{haddocktitle}
+
+\end{haddocktitle}
+\end{titlepage}
+\tableofcontents
+\input{UnboxedStuff}
+\end{document}
\ No newline at end of file
diff --git a/latex-test/src/UnboxedStuff/UnboxedStuff.hs b/latex-test/src/UnboxedStuff/UnboxedStuff.hs
new file mode 100644
index 0000000000..bd1b1302da
--- /dev/null
+++ b/latex-test/src/UnboxedStuff/UnboxedStuff.hs
@@ -0,0 +1,18 @@
+{-# LANGUAGE UnboxedSums, UnboxedTuples #-}
+module UnboxedStuff where
+
+data X
+data Y
+data Z
+
+-- * Unboxed type constructors
+
+unboxedUnit :: (# #) -> (# #)
+unboxedUnit = undefined
+
+unboxedTuple :: (# X, Y #) -> (# X, Y, Z #)
+unboxedTuple = undefined
+
+unboxedSum :: (# X | Y #) -> (# X | Y | Z #)
+unboxedSum = undefined
+