[jira] [Assigned] (ARROW-10578) [C++] Comparison kernels crashing for string array with null string scalar

["Kirill Lykov (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-10578?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kirill Lykov reassigned ARROW-10578:
------------------------------------

    Assignee: Kirill Lykov

> [C++] Comparison kernels crashing for string array with null string scalar
> --------------------------------------------------------------------------
>
>                 Key: ARROW-10578
>                 URL: https://issues.apache.org/jira/browse/ARROW-10578
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++
>            Reporter: Joris Van den Bossche
>            Assignee: Kirill Lykov
>            Priority: Major
>
> Comparing a string array with a string scalar works:
> {code}
> In [1]: import pyarrow.compute as pc
> In [2]: pc.equal(pa.array(["a", None, "b"]), pa.scalar("a", type="string")
> Out[2]: 
> <pyarrow.lib.BooleanArray object at 0x7f38d56e23a8>
> [
>   true,
>   null,
>   false
> ]
> {code}
> but if the scalar is a null (from the proper string type), it crashes:
> {code}
> In [4]: pc.equal(pa.array(["a", None, "b"]), pa.scalar(None, type="string"))
> Segmentation fault (core dumped)
> {code}
> (and not even debug messages ..)



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