[
https://issues.apache.org/jira/browse/ARROW-4641?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Rok Mihevc updated ARROW-4641:
------------------------------
External issue URL: https://github.com/apache/arrow/issues/21175
> [C++] Flight builds complain of -Wstrict-aliasing
> --------------------------------------------------
>
> Key: ARROW-4641
> URL: https://issues.apache.org/jira/browse/ARROW-4641
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Reporter: Wes McKinney
> Assignee: Wes McKinney
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.13.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> The compiler is rightly trying to protect us from doing a "bad thing", but I
> think this warning simply needs to be disabled in these compilation units
> {code}
> /usr/bin/ccache
> /home/wesm/miniconda/envs/arrow-3.7/bin/x86_64-conda_cos6-linux-gnu-c++
> -DARROW_EXTRA_ERROR_CONTEXT -DARROW_JEMALLOC
> -DARROW_JEMALLOC_INCLUDE_DIR=/home/wesm/code/arrow/cpp/build/jemalloc_ep-prefix/src/jemalloc_ep/dist//include
> -DARROW_NO_DEPRECATED_API -DARROW_USE_GLOG -DARROW_USE_SIMD
> -DARROW_WITH_BROTLI -DARROW_WITH_BZ2 -DARROW_WITH_LZ4 -DARROW_WITH_SNAPPY
> -DARROW_WITH_ZLIB -DARROW_WITH_ZSTD -Isrc -I../src -isystem
> /home/wesm/cpp-toolchain/include -isystem
> /home/wesm/miniconda/envs/arrow-3.7/include -isystem
> gbenchmark_ep/src/gbenchmark_ep-install/include -isystem
> jemalloc_ep-prefix/src -isystem /usr/local/hadoop/include -isystem
> /home/wesm/cpp-toolchain/include/thrift -Wno-noexcept-type
> -fvisibility-inlines-hidden -std=c++17 -fmessage-length=0 -march=nocona
> -mtune=haswell -ftree-vectorize -fPIC -fstack-protector-strong -fno-plt -O2
> -pipe -O3 -DNDEBUG -Wall -Wconversion -Wno-sign-conversion -Werror -msse4.2
> -fno-omit-frame-pointer -O3 -DNDEBUG -fPIC -std=gnu++11 -MD -MT
> src/arrow/flight/CMakeFiles/arrow_flight_objlib.dir/server.cc.o -MF
> src/arrow/flight/CMakeFiles/arrow_flight_objlib.dir/server.cc.o.d -o
> src/arrow/flight/CMakeFiles/arrow_flight_objlib.dir/server.cc.o -c
> ../src/arrow/flight/server.cc
> ../src/arrow/flight/server.cc: In member function 'virtual grpc::Status
> arrow::flight::FlightServiceImpl::DoGet(ServerContext*, const
> arrow::flight::protocol::Ticket*,
> ServerWriter<arrow::flight::protocol::FlightData>*)':
> ../src/arrow/flight/server.cc:192:75: error: dereferencing type-punned
> pointer will break strict-aliasing rules [-Werror=strict-aliasing]
> writer->Write(*reinterpret_cast<const pb::FlightData*>(&schema_payload),
> ^
> ../src/arrow/flight/server.cc:199:75: error: dereferencing type-punned
> pointer will break strict-aliasing rules [-Werror=strict-aliasing]
> !writer->Write(*reinterpret_cast<const pb::FlightData*>(&payload),
> ^
> cc1plus: all warnings being treated as errors
> [11/113] Building CXX object
> src/arrow/flight/CMakeFiles/arrow_flight_objlib.dir/client.cc.o
> FAILED: src/arrow/flight/CMakeFiles/arrow_flight_objlib.dir/client.cc.o
> /usr/bin/ccache
> /home/wesm/miniconda/envs/arrow-3.7/bin/x86_64-conda_cos6-linux-gnu-c++
> -DARROW_EXTRA_ERROR_CONTEXT -DARROW_JEMALLOC
> -DARROW_JEMALLOC_INCLUDE_DIR=/home/wesm/code/arrow/cpp/build/jemalloc_ep-prefix/src/jemalloc_ep/dist//include
> -DARROW_NO_DEPRECATED_API -DARROW_USE_GLOG -DARROW_USE_SIMD
> -DARROW_WITH_BROTLI -DARROW_WITH_BZ2 -DARROW_WITH_LZ4 -DARROW_WITH_SNAPPY
> -DARROW_WITH_ZLIB -DARROW_WITH_ZSTD -Isrc -I../src -isystem
> /home/wesm/cpp-toolchain/include -isystem
> /home/wesm/miniconda/envs/arrow-3.7/include -isystem
> gbenchmark_ep/src/gbenchmark_ep-install/include -isystem
> jemalloc_ep-prefix/src -isystem /usr/local/hadoop/include -isystem
> /home/wesm/cpp-toolchain/include/thrift -Wno-noexcept-type
> -fvisibility-inlines-hidden -std=c++17 -fmessage-length=0 -march=nocona
> -mtune=haswell -ftree-vectorize -fPIC -fstack-protector-strong -fno-plt -O2
> -pipe -O3 -DNDEBUG -Wall -Wconversion -Wno-sign-conversion -Werror -msse4.2
> -fno-omit-frame-pointer -O3 -DNDEBUG -fPIC -std=gnu++11 -MD -MT
> src/arrow/flight/CMakeFiles/arrow_flight_objlib.dir/client.cc.o -MF
> src/arrow/flight/CMakeFiles/arrow_flight_objlib.dir/client.cc.o.d -o
> src/arrow/flight/CMakeFiles/arrow_flight_objlib.dir/client.cc.o -c
> ../src/arrow/flight/client.cc
> ../src/arrow/flight/client.cc: In member function 'virtual arrow::Status
> arrow::flight::FlightPutWriter::FlightPutWriterImpl::WriteRecordBatch(const
> arrow::RecordBatch&, bool)':
> ../src/arrow/flight/client.cc:126:74: error: dereferencing type-punned
> pointer will break strict-aliasing rules [-Werror=strict-aliasing]
> if (!writer_->Write(*reinterpret_cast<const pb::FlightData*>(&payload),
> ^
> ../src/arrow/flight/client.cc: In member function 'arrow::Status
> arrow::flight::FlightClient::FlightClientImpl::DoPut(const
> arrow::flight::FlightDescriptor&, const std::shared_ptr<arrow::Schema>&,
> std::unique_ptr<arrow::ipc::RecordBatchWriter>*)':
> ../src/arrow/flight/client.cc:310:79: error: dereferencing type-punned
> pointer will break strict-aliasing rules [-Werror=strict-aliasing]
> if (!write_stream->Write(*reinterpret_cast<const
> pb::FlightData*>(&payload),
>
> ^
> cc1plus: all warnings being treated as errors
> [12/113] Performing configure step for 'jemalloc_ep'
> -- jemalloc_ep configure command succeeded. See also
> /home/wesm/code/arrow/cpp/build/jemalloc_ep-prefix/src/jemalloc_ep-stamp/jemalloc_ep-configure-*.log
> [13/113] Building CXX object
> src/arrow/flight/CMakeFiles/arrow_flight_objlib.dir/protocol-internal.cc.o
> {code}
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