From 8ebebb4500e688f57970a661c8afe888eb52162d Mon Sep 17 00:00:00 2001
From: simonmar <unknown>
Date: Wed, 28 Jul 1999 08:34:45 +0000
Subject: [PATCH] [project @ 1999-07-28 08:34:45 by simonmar] Allow unboxed
tuple components to have polymorphic types.
---
ghc/compiler/rename/RnSource.lhs | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/ghc/compiler/rename/RnSource.lhs b/ghc/compiler/rename/RnSource.lhs
index a1e1678efce2..780c91f7f021 100644
--- a/ghc/compiler/rename/RnSource.lhs
+++ b/ghc/compiler/rename/RnSource.lhs
@@ -629,9 +629,13 @@ rnHsType doc (MonoListTy ty)
= rnHsType doc ty `thenRn` \ (ty', fvs) ->
returnRn (MonoListTy ty', fvs `addOneFV` listTyCon_name)
+-- Unboxed tuples are allowed to have poly-typed arguments. These
+-- sometimes crop up as a result of CPR worker-wrappering dictionaries.
rnHsType doc (MonoTupleTy tys boxed)
- = rnHsTypes doc tys `thenRn` \ (tys', fvs) ->
- returnRn (MonoTupleTy tys' boxed, fvs `addOneFV` tup_con_name)
+ = (if boxed
+ then mapFvRn (rnHsType doc) tys
+ else mapFvRn (rnHsPolyType doc) tys) `thenRn` \ (tys', fvs) ->
+ returnRn (MonoTupleTy tys' boxed, fvs `addOneFV` tup_con_name)
where
tup_con_name = tupleTyCon_name boxed (length tys)
--
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