[jira] [Resolved] (ARROW-8353) [C++] is_nullable maybe not initialized in parquet writer

["Antoine Pitrou (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-8353?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou resolved ARROW-8353.
-----------------------------------
    Fix Version/s: 0.17.0
       Resolution: Fixed

Issue resolved by pull request 6853
[https://github.com/apache/arrow/pull/6853]

> [C++] is_nullable maybe not initialized in parquet writer
> ---------------------------------------------------------
>
>                 Key: ARROW-8353
>                 URL: https://issues.apache.org/jira/browse/ARROW-8353
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++
>            Reporter: Neal Richardson
>            Assignee: Wes McKinney
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 0.17.0
>
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> From the Rtools build:
> {code}
> [ 84%] Building CXX object src/parquet/CMakeFiles/parquet_static.dir/column_reader.cc.obj
> In file included from D:/a/arrow/arrow/cpp/src/arrow/io/concurrency.h:23:0,
>                  from D:/a/arrow/arrow/cpp/src/arrow/io/memory.h:25,
>                  from D:/a/arrow/arrow/cpp/src/parquet/platform.h:25,
>                  from D:/a/arrow/arrow/cpp/src/parquet/arrow/writer.h:23,
>                  from D:/a/arrow/arrow/cpp/src/parquet/arrow/writer.cc:18:
> D:/a/arrow/arrow/cpp/src/arrow/result.h: In member function 'virtual arrow::Status parquet::arrow::FileWriterImpl::WriteColumnChunk(const std::shared_ptr<arrow::ChunkedArray>&, int64_t, int64_t)':
> D:/a/arrow/arrow/cpp/src/arrow/result.h:428:28: warning: 'is_nullable' may be used uninitialized in this function [-Wmaybe-uninitialized]
>    auto result_name = (rexpr);                               \
>                             ^
> D:/a/arrow/arrow/cpp/src/parquet/arrow/writer.cc:430:10: note: 'is_nullable' was declared here
>      bool is_nullable;
>           ^
> {code}
> I'd give it a default value, but IDK that it's that simple.



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