[jira] [Created] (ARROW-13961) [C++] iso_calendar may be uninitialized

["Neal Richardson (Jira)" <ji...@apache.org>]

Neal Richardson created ARROW-13961:
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             Summary: [C++] iso_calendar may be uninitialized
                 Key: ARROW-13961
                 URL: https://issues.apache.org/jira/browse/ARROW-13961
             Project: Apache Arrow
          Issue Type: Bug
          Components: C++
            Reporter: Neal Richardson
             Fix For: 6.0.0


{code}
/arrow/cpp/src/arrow/scalar.h:137:64: warning: ‘*((void*)& iso_calendar +8)’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  137 |       : PrimitiveScalarBase(std::move(type), true), value(value) {}
      |                                                                ^
In file included from /tmp/RtmpoS4YCn/file8773f4430f/src/arrow/CMakeFiles/arrow_objlib.dir/Unity/unity_17_cxx.cxx:7:
/arrow/cpp/src/arrow/compute/kernels/scalar_temporal.cc:697:30: note: ‘*((void*)& iso_calendar +8)’ was declared here
  697 |       std::array<int64_t, 3> iso_calendar;
{code}

fyi [~rokm]



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