message: of course linux complains about this explicitly declaring as empty..
diff: @@ -421,7 +421,7 @@ void DataTable::VerifyForeignKeyConstraint(const BoundForeignKeyConstraint &bfk,
  }
  // Set up a way to record conflicts, rather than directly throw on them
  - unordered_set<column_t> empty_column_list = {};
  + unordered_set<column_t> empty_column_list;
  ConflictInfo empty_conflict_info(empty_column_list, false);
  ConflictManager regular_conflicts(verify_type, count, &empty_conflict_info);
  ConflictManager transaction_conflicts(verify_type, count, &empty_conflict_info);
  