From 2b4517cf85432d68e53ac46815309fd8068a40ad Mon Sep 17 00:00:00 2001
From: Pierre-Marie Pédrot
Date: Sun, 28 Aug 2016 19:43:00 +0200
Subject: Fix bug #4764: Syntactic notation externalization breaks.

---
 interp/notation_ops.ml | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'interp')

diff --git a/interp/notation_ops.ml b/interp/notation_ops.ml
index f3e0682bd7..de56dbe0ab 100644
--- a/interp/notation_ops.ml
+++ b/interp/notation_ops.ml
@@ -1128,13 +1128,15 @@ let match_notation_constr u c (metas,pat) =
   List.fold_right (fun (x,(scl,typ)) (terms',termlists',binders') ->
     match typ with
     | NtnTypeConstr ->
-       ((Id.List.assoc x terms, scl)::terms',termlists',binders')
+      let term = try Id.List.assoc x terms with Not_found -> raise No_match in
+       ((term, scl)::terms',termlists',binders')
     | NtnTypeOnlyBinder ->
        ((find_binder x, scl)::terms',termlists',binders')
     | NtnTypeConstrList ->
        (terms',(Id.List.assoc x termlists,scl)::termlists',binders')
     | NtnTypeBinderList ->
-       (terms',termlists',(Id.List.assoc x binderlists,scl)::binders'))
+      let bl = try Id.List.assoc x binderlists with Not_found -> raise No_match in
+       (terms',termlists',(bl, scl)::binders'))
     metas ([],[],[])
 
 (* Matching cases pattern *)
-- 
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