diff options
Diffstat (limited to 'lib/kernel/SubstantialRelation.ml')
| -rw-r--r-- | lib/kernel/SubstantialRelation.ml | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/kernel/SubstantialRelation.ml b/lib/kernel/SubstantialRelation.ml index d3f306b..ec2a01f 100644 --- a/lib/kernel/SubstantialRelation.ml +++ b/lib/kernel/SubstantialRelation.ml @@ -131,9 +131,9 @@ module Make (S : Abstract.Storage.STORAGE) = struct let scan storage relation ~keep = let open Utilities.Result in let* tx = S.start_read storage in - let* node = tuple_node tx relation in let closed = ref false in let close () = if not !closed then begin closed := true; ignore (S.abort tx) end in + let* node = tuple_node tx relation |> Result.map_error (fun c -> close (); c) in (* The fold is suspended by [yield], so the tree is walked one node and one tuple at a time rather than materialized before the first tuple is produced. *) |