From cd49c9df8e1d688327ae045729b538df00b77622 Mon Sep 17 00:00:00 2001
From: Alasdair Armstrong
Date: Mon, 11 Nov 2019 17:00:24 +0000
Subject: Make sure undefined_gen inserts enough type annotations for union
 constructors

---
 src/initial_check.ml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/initial_check.ml')

diff --git a/src/initial_check.ml b/src/initial_check.ml
index 1aebdbc2..7012e915 100644
--- a/src/initial_check.ml
+++ b/src/initial_check.ml
@@ -931,8 +931,8 @@ let generate_undefineds vs_ids (Defs defs) =
   in
   let undefined_tu = function
     | Tu_aux (Tu_ty_id (Typ_aux (Typ_tup typs, _), id), _) ->
-       mk_exp (E_app (id, List.map (fun _ -> mk_lit_exp L_undef) typs))
-    | Tu_aux (Tu_ty_id (typ, id), _) -> mk_exp (E_app (id, [mk_lit_exp L_undef]))
+       mk_exp (E_app (id, List.map (fun typ -> mk_exp (E_cast (typ, mk_lit_exp L_undef))) typs))
+    | Tu_aux (Tu_ty_id (typ, id), _) -> mk_exp (E_app (id, [mk_exp (E_cast (typ, mk_lit_exp L_undef))]))
   in
   let p_tup = function
     | [pat] -> pat
-- 
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