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Posted to jira@arrow.apache.org by "Yibo Cai (Jira)" <ji...@apache.org> on 2021/06/01 03:00:00 UTC
[jira] [Commented] (ARROW-12906) `fill_null` called with a null
value seg faults on non fixed-sized types.
[ https://issues.apache.org/jira/browse/ARROW-12906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17354760#comment-17354760 ]
Yibo Cai commented on ARROW-12906:
----------------------------------
For the record, below line returns nullptr because NullScalar is not derived from BaseBinaryScalar. It causes crash when later code dereferencing the returned nullptr.
https://github.com/apache/arrow/blob/9b68458bbf0a63a0be867d15ee608ebac69704d8/cpp/src/arrow/compute/kernels/scalar_fill_null.cc#L164
> `fill_null` called with a null value seg faults on non fixed-sized types.
> -------------------------------------------------------------------------
>
> Key: ARROW-12906
> URL: https://issues.apache.org/jira/browse/ARROW-12906
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++, Python
> Affects Versions: 4.0.0
> Environment: macOS, ubuntu
> Reporter: A. Coady
> Priority: Major
>
>
> {code:java}
> import pyarrow as pa
> assert pa.array([0]).fill_null(None)
> pa.array([""]).fill_null(None) # crash {code}
>
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