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-rw-r--r--kernel/vconv.ml17
1 files changed, 12 insertions, 5 deletions
diff --git a/kernel/vconv.ml b/kernel/vconv.ml
index 1c31cc041..a03a67db8 100644
--- a/kernel/vconv.ml
+++ b/kernel/vconv.ml
@@ -18,8 +18,8 @@ let compare_zipper z1 z2 =
match z1, z2 with
| Zapp args1, Zapp args2 -> Int.equal (nargs args1) (nargs args2)
| Zfix(f1,args1), Zfix(f2,args2) -> Int.equal (nargs args1) (nargs args2)
- | Zswitch _, Zswitch _ -> true
- | _ , _ -> false
+ | Zswitch _, Zswitch _ | Zproj _, Zproj _ -> true
+ | Zapp _ , _ | Zfix _, _ | Zswitch _, _ | Zproj _, _ -> false
let rec compare_stack stk1 stk2 =
match stk1, stk2 with
@@ -81,7 +81,10 @@ and conv_whd env pb k whd1 whd2 cu =
conv_whd env pb k whd1 (force_whd v stk) cu
| Vatom_stk(Aiddef(_,v),stk), _ ->
conv_whd env pb k (force_whd v stk) whd2 cu
- | _, _ -> raise NotConvertible
+
+ | Vsort _, _ | Vprod _, _ | Vfix _, _ | Vcofix _, _ | Vconstr_const _, _
+ | Vconstr_block _, _ | Vatom_stk _, _ -> raise NotConvertible
+
and conv_atom env pb k a1 stk1 a2 stk2 cu =
match a1, a2 with
@@ -110,7 +113,7 @@ and conv_atom env pb k a1 stk1 a2 stk2 cu =
conv_whd env pb k (force_whd v1 stk1) (Vatom_stk(a2,stk2)) cu
| _, Aiddef(ik2,v2) ->
conv_whd env pb k (Vatom_stk(a1,stk1)) (force_whd v2 stk2) cu
- | _, _ -> raise NotConvertible
+ | Aind _, _ | Aid _, _ -> raise NotConvertible
and conv_stack env k stk1 stk2 cu =
match stk1, stk2 with
@@ -131,7 +134,11 @@ and conv_stack env k stk1 stk2 cu =
done;
conv_stack env k stk1 stk2 !rcu
else raise NotConvertible
- | _, _ -> raise NotConvertible
+ | Zproj p1 :: stk1, Zproj p2 :: stk2 ->
+ if Constant.equal p1 p2 then conv_stack env k stk1 stk2 cu
+ else raise NotConvertible
+ | [], _ | Zapp _ :: _, _ | Zfix _ :: _, _ | Zswitch _ :: _, _
+ | Zproj _ :: _, _ -> raise NotConvertible
and conv_fun env pb k f1 f2 cu =
if f1 == f2 then cu