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

["Joris Van den Bossche (Jira)" <ji...@apache.org>]

Joris Van den Bossche created ARROW-10578:
---------------------------------------------

             Summary: [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


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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