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https://issues.apache.org/jira/browse/ARROW-8924?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kouhei Sutou reassigned ARROW-8924:
-----------------------------------
Assignee: Kazuaki Ishizaki
> [C++][Gandiva] castDATE_date32() may cause overflow
> ---------------------------------------------------
>
> Key: ARROW-8924
> URL: https://issues.apache.org/jira/browse/ARROW-8924
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++ - Gandiva
> Reporter: Kazuaki Ishizaki
> Assignee: Kazuaki Ishizaki
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The following code in `cpp/src/gandiva/precompiled/time.cc` may cause
> overflow since `int32` * `int32` is `int32`, then it is converted to `int64`.
> The result of `int32` may loose the part of the result of the multiplication
>
> {code:java}
> gdv_date64 castDATE_date32(gdv_date32 days) { return days * MILLIS_IN_DAY; }
> {code}
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