Better debug panic messages in applyTys

[ghc-hetmet.git] / compiler / coreSyn / CoreUtils.lhs

diff --git a/compiler/coreSyn/CoreUtils.lhs b/compiler/coreSyn/CoreUtils.lhs
index a769dcd..07709c8 100644 (file)
--- a/compiler/coreSyn/CoreUtils.lhs
+++ b/compiler/coreSyn/CoreUtils.lhs
@@ -154,12 +154,16 @@ applyTypeToArgs e op_ty (Type ty : args)
     go rev_tys (Type ty : args) = go (ty:rev_tys) args
     go rev_tys rest_args        = applyTypeToArgs e op_ty' rest_args
                                where
-                                 op_ty' = applyTys op_ty (reverse rev_tys)
+                                 op_ty' = applyTysD msg op_ty (reverse rev_tys)
+                                 msg = panic_msg e op_ty
 
 applyTypeToArgs e op_ty (_ : args)
   = case (splitFunTy_maybe op_ty) of
        Just (_, res_ty) -> applyTypeToArgs e res_ty args
-       Nothing -> pprPanic "applyTypeToArgs" (pprCoreExpr e $$ ppr op_ty)
+       Nothing -> pprPanic "applyTypeToArgs" (panic_msg e op_ty)
+
+panic_msg :: CoreExpr -> Type -> SDoc
+panic_msg e op_ty = pprCoreExpr e $$ ppr op_ty
 \end{code}
 
 %************************************************************************