X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2FbasicTypes%2FVar.lhs;h=4f1ed2e1a603f0ab73b9f710bd5103c1dc44917a;hb=e79c9ce01d0ce4412bd4bcd99c8c728a6a2ec569;hp=eec6c803b461be484597a7b8ead612570893820c;hpb=a187566d4ce21b657fd5268373d0e3743d29d886;p=ghc-hetmet.git

diff --git a/compiler/basicTypes/Var.lhs b/compiler/basicTypes/Var.lhs
index eec6c80..4f1ed2e 100644
--- a/compiler/basicTypes/Var.lhs
+++ b/compiler/basicTypes/Var.lhs
@@ -288,8 +288,8 @@ mkTcTyVar name kind details
 %************************************************************************
 
 \begin{code}
-type CoVar = Var -- A coercion variable is simply a type 
-			-- variable of kind @ty1 :=: ty2@. Hence its
+type CoVar = TyVar -- A coercion variable is simply a type 
+			-- variable of kind @ty1 ~ ty2@. Hence its
 			-- 'varType' is always @PredTy (EqPred t1 t2)@
 
 coVarName :: CoVar -> Name
@@ -310,16 +310,9 @@ mkCoVar name kind = ASSERT( isCoercionKind kind )
 			}
 
 mkWildCoVar :: Kind -> TyVar
--- ^ Create a type variable that is never referred to, so its unique doesn't matter
-mkWildCoVar kind 
-  = ASSERT( isCoercionKind kind )
-    TyVar { varName = mkSysTvName wild_uniq (fsLit "co_wild"),
-            realUnique = _ILIT(1),
-            varType = kind,
-            isCoercionVar = True }
-  where
-    wild_uniq = mkBuiltinUnique 1
-
+-- ^ Create a type variable that is never referred to, so its unique doesn't 
+-- matter
+mkWildCoVar = mkCoVar (mkSysTvName (mkBuiltinUnique 1) (fsLit "co_wild"))
 \end{code}
 
 %************************************************************************