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https://issues.apache.org/jira/browse/ARROW-3793?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney resolved ARROW-3793.
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Resolution: Fixed
Fix Version/s: 0.12.0
Issue resolved by pull request 2977
[https://github.com/apache/arrow/pull/2977]
> [C++] TestScalarAppendUnsafe is not testing unsafe appends
> ----------------------------------------------------------
>
> Key: ARROW-3793
> URL: https://issues.apache.org/jira/browse/ARROW-3793
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Affects Versions: 0.12.0
> Reporter: Benjamin Kietzman
> Priority: Minor
> Labels: newbie, pull-request-available, test
> Fix For: 0.12.0
>
> Time Spent: 2h 50m
> Remaining Estimate: 0h
>
> In
> [TestScalarAppendUnsafe|https://github.com/apache/arrow/blob/56e72ba09c3d886c6a5aeb11fb1642af13819f93/cpp/src/arrow/array-test.cc#L1497],
> AppendNull is called to modify the bitmask which is not unsafe- it reserves
> at least one more element. UnsafeAppendNull should be used instead.
> Since PoolBuffers round their capacities up to multiples of 64 bytes, no
> buffer is ever in danger of overflowing in this test anyway. More repetitions
> should be used so that the test will fail if insufficient storage is
> allocated. More storage should be allocated in the test, too- currently only
> a single iteration's worth is allocated.
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