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-rw-r--r--haddock-api/src/Haddock/Convert.hs5
1 files changed, 5 insertions, 0 deletions
diff --git a/haddock-api/src/Haddock/Convert.hs b/haddock-api/src/Haddock/Convert.hs
index 044e1e11..622837fa 100644
--- a/haddock-api/src/Haddock/Convert.hs
+++ b/haddock-api/src/Haddock/Convert.hs
@@ -457,6 +457,11 @@ synifyType _ (TyConApp tc tys)
ConstraintTuple -> HsConstraintTuple
UnboxedTuple -> HsUnboxedTuple)
(map (synifyType WithinType) vis_tys)
+ | isUnboxedSumTyCon tc = noLoc $ HsSumTy noExt (map (synifyType WithinType) vis_tys)
+ | Just dc <- isPromotedDataCon_maybe tc
+ , isTupleDataCon dc
+ , dataConSourceArity dc == length vis_tys
+ = noLoc $ HsExplicitTupleTy noExt (map (synifyType WithinType) vis_tys)
-- ditto for lists
| getName tc == listTyConName, [ty] <- tys =
noLoc $ HsListTy noExt (synifyType WithinType ty)