[ARROW-8070] [C++] Cast segfaults on unsupported cast from list<binary> to utf8

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.17.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/24282
• Assignee: Krisztian Szucs
• Reporter: Daniel Nugent
• Created: 11/Mar/20 01:11
• Updated: 11/Jan/23 07:57
• Resolved: 27/Mar/20 18:22

Description

Was messing around with some nested arrays and found a pretty easy to reproduce segfault:

Python 3.7.6 | packaged by conda-forge | (default, Jan  7 2020, 22:33:48)
[GCC 7.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy as np, pyarrow as pa
>>> pa.__version__
'0.16.0'
>>> np.__version__
'1.18.1'
>>> x=[np.array([b'a',b'b'])]
>>> a = pa.array(x,pa.list_(pa.binary()))
>>> a
<pyarrow.lib.ListArray object at 0x7fd948b108a0>
[
  [
    61,
    62
  ]
]
>>> a.cast(pa.string())
Segmentation fault

I don't know if that cast makes sense, but I left the checks on, so I would not expect a segfault from it.

Issue Links

• links to: GitHub Pull Request #6738