Ignore the new associated type defaults like we ignore default methods

src/Haddock/Backends/LaTeX.hs

@@ -473,7 +473,7 @@ ppClassDecl :: [DocInstance DocName] -> SrcSpan
             -> Maybe (Doc DocName) -> [(DocName, DocForDecl DocName)]
             -> TyClDecl DocName -> Bool -> LaTeX
 ppClassDecl instances loc mbDoc subdocs
-  (ClassDecl lctxt lname ltyvars lfds lsigs _ ats _) unicode
+  (ClassDecl lctxt lname ltyvars lfds lsigs _ ats at_defs _) unicode
   = declWithDoc classheader (if null body then Nothing else Just (vcat body)) $$
     instancesBit
   where
@@ -486,8 +486,8 @@ ppClassDecl instances loc mbDoc subdocs
     body = catMaybes [fmap docToLaTeX mbDoc, body_]
 
     body_
-      | null lsigs, null ats = Nothing
-      | null ats  = Just methodTable
+      | null lsigs, null ats, null at_defs = Nothing
+      | null ats, null at_defs = Just methodTable
 ---     | otherwise = atTable $$ methodTable
       | otherwise = error "LaTeX.ppClassDecl"
 

src/Haddock/Backends/Xhtml/Decl.hs

@@ -352,7 +352,7 @@ ppFds fds unicode qual =
 ppShortClassDecl :: Bool -> LinksInfo -> TyClDecl DocName -> SrcSpan
                  -> [(DocName, DocForDecl DocName)] -> Bool -> Qualification
                  -> Html
-ppShortClassDecl summary links (ClassDecl lctxt lname tvs fds sigs _ ats _) loc
+ppShortClassDecl summary links (ClassDecl lctxt lname tvs fds sigs _ ats _ _) loc
     subdocs unicode qual = 
   if null sigs && null ats
     then (if summary then id else topDeclElem links loc [nm]) hdr
@@ -381,7 +381,7 @@ ppClassDecl :: Bool -> LinksInfo -> [DocInstance DocName] -> SrcSpan
             -> Maybe (Doc DocName) -> [(DocName, DocForDecl DocName)]
             -> TyClDecl DocName -> Bool -> Qualification -> Html
 ppClassDecl summary links instances loc mbDoc subdocs
-        decl@(ClassDecl lctxt lname ltyvars lfds lsigs _ ats _) unicode qual
+        decl@(ClassDecl lctxt lname ltyvars lfds lsigs _ ats _ _) unicode qual
   | summary = ppShortClassDecl summary links decl loc subdocs unicode qual
   | otherwise = classheader +++ maybeDocSection qual mbDoc
                   +++ atBit +++ methodBit  +++ instancesBit

src/Haddock/Convert.hs

@@ -68,14 +68,20 @@ tyThingToLHsDecl t = noLoc $ case t of
       (map (noLoc . synifyIdSig DeleteTopLevelQuantification)
            (classMethods cl))
       emptyBag --ignore default method definitions, they don't affect signature
-      (map synifyClassAT (classATs cl))
+      ats
+      (concat at_defss)
       [] --we don't have any docs at this point
+    where (ats, at_defss) = unzip $ map synifyClassAT (classATItems cl)
 
 
 -- class associated-types are a subset of TyCon
 -- (mainly only type/data-families)
-synifyClassAT :: TyCon -> LTyClDecl Name
-synifyClassAT = noLoc . synifyTyCon
+synifyClassAT :: ClassATItem -> (LTyClDecl Name, [LTyClDecl Name])
+synifyClassAT (tc, mb_defs) = (noLoc (synifyTyCon tc), maybe [] (map synifyATDefault) mb_defs)
+
+synifyATDefault :: TyCon -> LTyClDecl Name
+synifyATDefault tc = noLoc (synifyAxiom ax)
+  where Just ax = tyConFamilyCoercion_maybe tc
 
 synifyAxiom :: CoAxiom -> TyClDecl Name
 synifyAxiom (CoAxiom { co_ax_tvs = tvs, co_ax_lhs = lhs, co_ax_rhs = rhs })

src/Haddock/Interface/Rename.hs

@@ -351,15 +351,16 @@ renameTyClD d = case d of
     typats'  <- mapM (mapM renameLType) typats
     return (TySynonym lname' ltyvars' typats' ltype')
 
-  ClassDecl lcontext lname ltyvars lfundeps lsigs _ ats _ -> do
+  ClassDecl lcontext lname ltyvars lfundeps lsigs _ ats at_defs _ -> do
     lcontext' <- renameLContext lcontext
     lname'    <- renameL lname
     ltyvars'  <- mapM renameLTyVarBndr ltyvars
     lfundeps' <- mapM renameLFunDep lfundeps
     lsigs'    <- mapM renameLSig lsigs
     ats'      <- mapM renameLTyClD ats
+    at_defs'  <- mapM renameLTyClD at_defs
     -- we don't need the default methods or the already collected doc entities
-    return (ClassDecl lcontext' lname' ltyvars' lfundeps' lsigs' emptyBag ats' [])
+    return (ClassDecl lcontext' lname' ltyvars' lfundeps' lsigs' emptyBag ats' at_defs' [])
 
   where
     renameLCon (L loc con) = return . L loc =<< renameCon con