danny0405 commented on a change in pull request #1618: [hotfix] Fixed an issue
where overflow from Long to Int was unsafe
URL: https://github.com/apache/calcite/pull/1618#discussion_r352391116
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File path: core/src/main/java/org/apache/calcite/rex/RexInterpreter.java
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@@ -213,7 +213,7 @@ private Comparable extract(RexCall call, List<Comparable>
values) {
final int v2;
if (v instanceof Long) {
// TIMESTAMP
- v2 = (int) (((Long) v) / TimeUnit.DAY.multiplier.longValue());
+ v2 = Math.toIntExact(((Long) v) / TimeUnit.DAY.multiplier.longValue());
Review comment:
Why do you think a integer days would overflow ? Can you give a test case ?
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