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-rw-r--r--contrib/extraction/mlutil.ml5
1 files changed, 3 insertions, 2 deletions
diff --git a/contrib/extraction/mlutil.ml b/contrib/extraction/mlutil.ml
index 2805cd935..b035d2b32 100644
--- a/contrib/extraction/mlutil.ml
+++ b/contrib/extraction/mlutil.ml
@@ -416,8 +416,9 @@ let nb_occur_match =
let rec nb k = function
| MLrel i -> if i = k then 1 else 0
| MLcase(a,v) ->
- Array.fold_left
- (fun r (_,ids,a) -> max r (nb (k+(List.length ids)) a)) (nb k a) v
+ (nb k a) +
+ Array.fold_left
+ (fun r (_,ids,a) -> max r (nb (k+(List.length ids)) a)) 0 v
| MLletin (_,a,b) -> (nb k a) + (nb (k+1) b)
| MLfix (_,ids,v) -> let k = k+(Array.length ids) in
Array.fold_left (fun r a -> r+(nb k a)) 0 v