[jira] [Updated] (ARROW-13600) [C++] Maybe uninitialized warnings

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-13600?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated ARROW-13600:
-----------------------------------
    Labels: pull-request-available  (was: )

> [C++] Maybe uninitialized warnings
> ----------------------------------
>
>                 Key: ARROW-13600
>                 URL: https://issues.apache.org/jira/browse/ARROW-13600
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++
>            Reporter: Keith Kraus
>            Assignee: Keith Kraus
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> {code}
> Building CXX object src/arrow/CMakeFiles/arrow_objlib.dir/compute/exec/key_hash.cc.o
> /home/keith/git/arrow/cpp/src/arrow/compute/exec/key_hash.cc: In static member function 'static void arrow::compute::Hashing::hash_varlen_helper(uint32_t, const uint8_t*, uint32_t*)':
> /home/keith/git/arrow/cpp/src/arrow/compute/exec/key_hash.cc:202:16: warning: 'last_stripe' may be used uninitialized in this function [-Wmaybe-uninitialized]
>   202 |       uint32_t lane = reinterpret_cast<const uint32_t*>(last_stripe)[j];
>       |                ^~~~
> {code}
> {code}
> Building CXX object src/arrow/CMakeFiles/arrow_objlib.dir/tensor.cc.o
> /home/keith/git/arrow/cpp/src/arrow/tensor.cc: In member function 'arrow::Result<long int> arrow::Tensor::CountNonZero() const':
> /home/keith/git/arrow/cpp/src/arrow/tensor.cc:337:18: warning: '*((void*)& counter +8)' may be used uninitialized in this function [-Wmaybe-uninitialized]
>   337 |   NonZeroCounter counter(*this);
> {code}



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