Github user zuyu commented on a diff in the pull request:
https://github.com/apache/incubator-quickstep/pull/240#discussion_r113042124
--- Diff: query_optimizer/rules/ReuseAggregateExpressions.cpp ---
@@ -194,7 +194,7 @@ P::PhysicalPtr ReuseAggregateExpressions::applyToNode(
sum_it == ref_map.end() ? kInvalidRef : sum_it->second.front();
for (const std::size_t idx : avg_it->second) {
- agg_refs[idx].reset(new AggregateReference(sum_ref, count_ref));
+ agg_refs[idx] = std::make_unique<AggregateReference>(sum_ref,
count_ref);
--- End diff --
Memory leaks upon system failures when using `new`.
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