[jira] [Updated] (ARROW-11767) [C++] Scalar::hash may segfault for null scalars

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-11767?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated ARROW-11767:
-----------------------------------
    Labels: pull-request-available  (was: )

> [C++] Scalar::hash may segfault for null scalars
> ------------------------------------------------
>
>                 Key: ARROW-11767
>                 URL: https://issues.apache.org/jira/browse/ARROW-11767
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++
>    Affects Versions: 3.0.0
>            Reporter: Ben Kietzman
>            Assignee: Ben Kietzman
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.0.0
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Scalar::Hash does not check Scalar::is_valid, which can result in inconsistent hashes when applied to uninitialized {{/.*Scalar::value/}} or may segfault (since null binary scalars may have a null buffer).



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