From 0d35afe57ac42ec0c8b3f7a66a104361a86616b0 Mon Sep 17 00:00:00 2001
From: msozeau
Date: Tue, 8 Jun 2010 01:02:59 +0000
Subject: Fix treatment of {struct x} annotations in presence of generalized
 binders.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13086 85f007b7-540e-0410-9357-904b9bb8a0f7
---
 lib/util.ml  | 7 +++++++
 lib/util.mli | 1 +
 2 files changed, 8 insertions(+)

(limited to 'lib')

diff --git a/lib/util.ml b/lib/util.ml
index af5f2e33c4..42cdc2bf2c 100644
--- a/lib/util.ml
+++ b/lib/util.ml
@@ -800,6 +800,13 @@ let list_cartesians op init ll =
 
 let list_combinations l = list_cartesians (fun x l -> x::l) [] l
 
+let rec list_combine3 x y z = 
+  match x, y, z with
+  | [], [], [] -> []
+  | (x :: xs), (y :: ys), (z :: zs) ->
+      (x, y, z) :: list_combine3 xs ys zs
+  | _, _, _ -> raise (Invalid_argument "list_combine3")
+  
 (* Keep only those products that do not return None *)
 
 let rec list_cartesian_filter op l1 l2 =
diff --git a/lib/util.mli b/lib/util.mli
index 98d2b6cf9d..43dd439131 100644
--- a/lib/util.mli
+++ b/lib/util.mli
@@ -213,6 +213,7 @@ val list_cartesians : ('a -> 'b -> 'b) -> 'b -> 'a list list -> 'b list
 
 (** list_combinations [[a;b];[c;d]] returns [[a;c];[a;d];[b;c];[b;d]] *)
 val list_combinations : 'a list list -> 'a list list
+val list_combine3 : 'a list -> 'b list -> 'c list -> ('a * 'b * 'c) list
 
 (** Keep only those products that do not return None *)
 val list_cartesian_filter :
-- 
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