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From "Jeroen (Jira)" <>
Subject [jira] [Created] (ARROW-7049) warnings building on mingw-w64
Date Sat, 02 Nov 2019 15:00:00 GMT
Jeroen created ARROW-7049:

             Summary: warnings building on mingw-w64
                 Key: ARROW-7049
             Project: Apache Arrow
          Issue Type: Bug
          Components: C++
    Affects Versions: 0.15.1
            Reporter: Jeroen

Two warnings when building libarrow 0.15.1 on mingw-w64:

[  2%] Running thrift compiler on parquet.thrift
The "byte" type is a compatibility alias for "i8". Use "i8" to emphasize the signedness of
this type.

And later:

 81%] Building CXX object src/parquet/CMakeFiles/parquet_static.dir/
In member function 'virtual arrow::Status parquet::arrow::FileWriterImpl::WriteColumnChunk(const
std::shared_ptr<arrow::ChunkedArray>&, int64_t, int64_t)':
warning: 'schema_field' may be used uninitialized in this function [-Wmaybe-uninitialized]
         schema_manifest_(schema_manifest) {}
note: 'schema_field' was declared here
     const SchemaField* schema_field;

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