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https://issues.apache.org/jira/browse/ARROW-7037?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
ASF GitHub Bot updated ARROW-7037:
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Labels: pull-request-available (was: )
> [C++ ] Compile error on the combination of protobuf >= 3.9 and clang
> --------------------------------------------------------------------
>
> Key: ARROW-7037
> URL: https://issues.apache.org/jira/browse/ARROW-7037
> Project: Apache Arrow
> Issue Type: Task
> Components: C++
> Reporter: Kenta Murata
> Assignee: Kenta Murata
> Priority: Major
> Labels: pull-request-available
>
> I encountered the following compile error on the combination of protobuf
> 3.10.0 and clang (Xcode 11).
> {noformat}
> [13/26] Building CXX object
> c++/src/CMakeFiles/orc.dir/wrap/orc-proto-wrapper.cc.o
> FAILED: c++/src/CMakeFiles/orc.dir/wrap/orc-proto-wrapper.cc.o
> /Applications/Xcode_11.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
> -Ic++/include
> -I/Users/mrkn/src/github.com/apache/arrow/cpp/build.debug/orc_ep-prefix/src/orc_ep/c++/include
>
> -I/Users/mrkn/src/github.com/apache/arrow/cpp/build.debug/orc_ep-prefix/src/orc_ep/c++/src
> -Ic++/src -isystem c++/libs/thirdparty/zlib_ep-install/include -isystem
> c++/libs/thirdparty/lz4_ep-install/include -Qunused-arguments
> -fcolor-diagnostics -ggdb -O0 -g -fPIC -Wno-zero-as-null-pointer-constant
> -Wno-inconsistent-missing-destructor-override -Wno-error=undef -std=c++11
> -Weverything -Wno-c++98-compat -Wno-missing-prototypes
> -Wno-c++98-compat-pedantic -Wno-padded -Wno-covered-switch-default
> -Wno-missing-noreturn -Wno-unknown-pragmas
> -Wno-gnu-zero-variadic-macro-arguments -Wconversion -Wno-c++2a-compat -Werror
> -std=c++11 -Weverything -Wno-c++98-compat -Wno-missing-prototypes
> -Wno-c++98-compat-pedantic -Wno-padded -Wno-covered-switch-default
> -Wno-missing-noreturn -Wno-unknown-pragmas
> -Wno-gnu-zero-variadic-macro-arguments -Wconversion -Wno-c++2a-compat -Werror
> -O0 -g -MD -MT c++/src/CMakeFiles/orc.dir/wrap/orc-proto-wrapper.cc.o -MF
> c++/src/CMakeFiles/orc.dir/wrap/orc-proto-wrapper.cc.o.d -o
> c++/src/CMakeFiles/orc.dir/wrap/orc-proto-wrapper.cc.o -c
> /Users/mrkn/src/github.com/apache/arrow/cpp/build.debug/orc_ep-prefix/src/orc_ep/c++/src/wrap/orc-proto-wrapper.cc
> In file included from
> /Users/mrkn/src/github.com/apache/arrow/cpp/build.debug/orc_ep-prefix/src/orc_ep/c++/src/wrap/orc-proto-wrapper.cc:44:
> c++/src/orc_proto.pb.cc:959:145: error: possible misuse of comma operator
> here [-Werror,-Wcomma]
> static bool dynamic_init_dummy_orc_5fproto_2eproto = (
> ::PROTOBUF_NAMESPACE_ID::internal::AddDescriptors(&descriptor_table_orc_5fproto_2eproto),
> true);
>
> ^
> c++/src/orc_proto.pb.cc:959:57: note: cast expression to void to silence
> warning
> static bool dynamic_init_dummy_orc_5fproto_2eproto = (
> ::PROTOBUF_NAMESPACE_ID::internal::AddDescriptors(&descriptor_table_orc_5fproto_2eproto),
> true);
>
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> static_cast<void>(
> )
> 1 error generated.
> {noformat}
> This may be due to a bug of protobuf filed as
> https://github.com/protocolbuffers/protobuf/issues/6619.
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