Tactics: generic equality on constr replaced by eq_constr

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14321 85f007b7-540e-0410-9357-904b9bb8a0f7

3 files changed, 11 insertions, 2 deletions

diff --git a/lib/util.ml b/lib/util.ml
index 76d9c6728..67ff2a501 100644
--- a/lib/util.ml
+++ b/lib/util.ml
@@ -399,6 +399,13 @@ let rec list_compare cmp l1 l2 =
 	   | 0 -> list_compare cmp l1 l2
 	   | c -> c)
 
+let rec list_equal cmp l1 l2 =
+  match l1, l2 with
+    | [], [] -> true
+    | x1 :: l1, x2 :: l2 ->
+      cmp x1 x2 && list_equal cmp l1 l2
+    | _ -> false
+
 let list_intersect l1 l2 =
   List.filter (fun x -> List.mem x l2) l1
 
diff --git a/lib/util.mli b/lib/util.mli
index baa116489..458eb1d05 100644
--- a/lib/util.mli
+++ b/lib/util.mli
@@ -116,6 +116,7 @@ val ascii_of_ident : string -> string
 (** {6 Lists. } *)
 
 val list_compare : ('a -> 'a -> int) -> 'a list -> 'a list -> int
+val list_equal : ('a -> 'a -> bool) -> 'a list -> 'a list -> bool
 val list_add_set : 'a -> 'a list -> 'a list
 val list_eq_set : 'a list -> 'a list -> bool
 val list_intersect : 'a list -> 'a list -> 'a list
diff --git a/tactics/tactics.ml b/tactics/tactics.ml
index 6b67a6d60..3ad89c825 100644
--- a/tactics/tactics.ml
+++ b/tactics/tactics.ml
@@ -2710,8 +2710,9 @@ let compute_scheme_signature scheme names_info ind_type_guess =
 
 		let ccl_arg_ok = is_pred (p + scheme.nargs + 1) f = IndArg in
 		let ind_is_ok =
-		  list_lastn scheme.nargs indargs
-		  = extended_rel_list 0 scheme.args in
+		  list_equal eq_constr
+		    (list_lastn scheme.nargs indargs)
+		    (extended_rel_list 0 scheme.args) in
 		if not (ccl_arg_ok & ind_is_ok) then
 		  error_ind_scheme "the conclusion of";
 		[]