Re: Build error with GCC 14, not even a warning in GCC 13

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On Tue, Jan 16, 2024 at 3:07 PM Richard Shaw <hobbes1069@xxxxxxxxx> wrote:
>
> I'm working on getting a new dependency of one of my packages into Fedora:
>
> https://github.com/socketio/socket.io-client-cpp/releases
>
> After doing successful test builds locally in mock (no error output at all) I used fedora-create-review but all the builds failed with:
>
> In file included from /builddir/build/BUILD/socket.io-client-cpp-3.1.0/src/internal/sio_packet.cpp:8:
> /usr/include/rapidjson/document.h: In member function ‘rapidjson::GenericStringRef<CharType>& rapidjson::GenericStringRef<CharType>::operator=(const rapidjson::GenericStringRef<CharType>&)’:
> /usr/include/rapidjson/document.h:319:82: error: assignment of read-only member ‘rapidjson::GenericStringRef<CharType>::length’
>   319 |     GenericStringRef& operator=(const GenericStringRef& rhs) { s = rhs.s; length = rhs.length; }
>       |                                                                           ~~~~~~~^~~~~~~~~~~~
> gmake[2]: *** [CMakeFiles/sioclient.dir/build.make:121: CMakeFiles/sioclient.dir/src/internal/sio_packet.cpp.o] Error 1
>
> Full logs: https://koji.fedoraproject.org/koji/taskinfo?taskID=111852023
>
> Is this a real error?

Yes, see https://github.com/Tencent/rapidjson/issues/718. The operator
implementation is most certainly not legal, but previous versions of
the compiler may have been ignoring that due to not being asked to
instantiate the specific method.
This was fixed 8 years ago, apparently bundled deps in
socket.io-client-cpp are even older.

>
> Thanks,
> Richard
> --
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