[jira] [Resolved] (ARROW-12672) [C++] Segfault casting result of "fill_null()" (not bitmap but unknown null_count)

["Yibo Cai (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-12672?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yibo Cai resolved ARROW-12672.
------------------------------
    Fix Version/s: 5.0.0
       Resolution: Fixed

Issue resolved by pull request 10263
[https://github.com/apache/arrow/pull/10263]

> [C++] Segfault casting result of "fill_null()" (not bitmap but unknown null_count)
> ----------------------------------------------------------------------------------
>
>                 Key: ARROW-12672
>                 URL: https://issues.apache.org/jira/browse/ARROW-12672
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Python
>    Affects Versions: 4.0.0
>            Reporter: Adam Hooper
>            Assignee: Joris Van den Bossche
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 5.0.0
>
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> The array returned by {{pa.Array.fill_null()}} is unusable.
> {code}
> >>> import pyarrow as pa
> >>> arr = pa.array([None], pa.bool_()).fill_null(False)
> >>> arr.cast(pa.int8())
> Segmentation fault (core dumped)
> {code}



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