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-rw-r--r--proofs/redexpr.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/proofs/redexpr.ml b/proofs/redexpr.ml
index db6f48547..3c8ccec6b 100644
--- a/proofs/redexpr.ml
+++ b/proofs/redexpr.ml
@@ -186,7 +186,7 @@ let reduction_of_red_expr env =
| Simpl None -> (simpl,DEFAULTcast)
| Cbv f -> (cbv_norm_flags (make_flag f),DEFAULTcast)
| Cbn f ->
- (strong (fun env evd x -> zip ~refold:true
+ (strong (fun env evd x -> Stack.zip ~refold:true
(fst (whd_state_gen true (make_flag f) env evd (x, [])))),DEFAULTcast)
| Lazy f -> (clos_norm_flags (make_flag f),DEFAULTcast)
| Unfold ubinds -> (unfoldn (List.map out_with_occurrences ubinds),DEFAULTcast)