nickva commented on issue #5346:
URL: https://github.com/apache/couchdb/issues/5346#issuecomment-2504488385
Maybe something like this?
```diff
diff --git a/src/couch/src/couch_db_updater.erl
b/src/couch/src/couch_db_updater.erl
index 0747390b2..daa28b9c3 100644
--- a/src/couch/src/couch_db_updater.erl
+++ b/src/couch/src/couch_db_updater.erl
@@ -449,8 +449,10 @@ add_sizes(leaf, #leaf{sizes = Sizes, atts = AttSizes},
Acc) ->
{ASAcc, ESAcc, AttsAcc} = Acc,
NewASAcc = ActiveSize + ASAcc,
NewESAcc = ExternalSize + ESAcc,
- NewAttsAcc = lists:umerge(AttSizes, AttsAcc),
- {NewASAcc, NewESAcc, NewAttsAcc};
+ case AttSizes of
+ [_ | _] -> {NewASAcc, NewESAcc, lists:umerge(AttSizes, AttsAcc)};
+ [] -> {NewASAcc, NewESAcc, []}
+ end;
add_sizes(_, #leaf{atts = AttSizes}, Acc) ->
% For intermediate nodes external and active contribution is 0
{ASAcc, ESAcc, AttsAcc} = Acc,
```
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