Gang Wu created ORC-2159:
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Summary: [C++] C++ build fails with newer protobuf due to ignored
nodiscard return values
Key: ORC-2159
URL: https://issues.apache.org/jira/browse/ORC-2159
Project: ORC
Issue Type: Improvement
Components: C++
Reporter: Gang Wu
Assignee: Gang Wu
The C++ build fails with newer protobuf / compiler headers because several
boolean-returning APIs are marked nodiscard and their return values are
ignored. Since the C++ build treats warnings as errors, these become hard build
failures.
The build fails with errors like:
ColumnReader.cc:438:9: error: ignoring return value of function declared with
'nodiscard' attribute [-Werror,-Wunused-result]
inputStream_->Skip(static_cast<int>(step));
ColumnReader.cc:684:9: error: ignoring return value of function declared with
'nodiscard' attribute [-Werror,-Wunused-result]
blobStream_->Skip(static_cast<int>(step));
ColumnWriter.cc:215:5: error: ignoring return value of function declared with
'nodiscard' attribute [-Werror,-Wunused-result]
rowIndex->SerializeToZeroCopyStream(indexStream.get());
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