Fix scoped type variables for expression type signatures

[ghc-hetmet.git] / compiler / specialise / Specialise.lhs

diff --git a/compiler/specialise/Specialise.lhs b/compiler/specialise/Specialise.lhs
index 3646f91..fa9d253 100644 (file)
--- a/compiler/specialise/Specialise.lhs
+++ b/compiler/specialise/Specialise.lhs
@@ -624,7 +624,9 @@ specExpr :: Subst -> CoreExpr -> SpecM (CoreExpr, UsageDetails)
 specExpr subst (Type ty) = returnSM (Type (substTy subst ty), emptyUDs)
 specExpr subst (Var v)   = returnSM (specVar subst v,         emptyUDs)
 specExpr subst (Lit lit) = returnSM (Lit lit,                emptyUDs)
-
+specExpr subst (Cast e co) =
+  specExpr subst e              `thenSM` \ (e', uds) ->
+  returnSM ((Cast e' (substTy subst co)), uds)
 specExpr subst (Note note body)
   = specExpr subst body        `thenSM` \ (body', uds) ->
     returnSM (Note (specNote subst note) body', uds)
@@ -688,7 +690,6 @@ specExpr subst (Let bind body)
     returnSM (foldr Let body' binds', uds)
 
 -- Must apply the type substitution to coerceions
-specNote subst (Coerce t1 t2) = Coerce (substTy subst t1) (substTy subst t2)
 specNote subst note          = note
 \end{code}