Generated code triggers ICE with GCC 7.5

[coryan]

What version of protobuf and what language are you using?
Version: v24.2
Language: C++

What operating system (Linux, Windows, ...) and version?

Linux, openSUSE Leap 15.5

What runtime / compiler are you using (e.g., python version or gcc version)

GCC (SUSE Linux) 7.5.,0

What did you do?

git clone -b renovate/protobuf https://github.com/renovate-bot/google-cloud-cpp.git
cd google-cloud-cpp
ci/cloudbuild/build.sh -t demo-opensuse-leap-pr

What did you expect to see

A successful build.

What did you see instead?

https://github.com/googleapis/google-cloud-cpp/pull/12476/checks?check_run_id=16287575181

/workspace/cmake-out/external/googleapis/google/cloud/dialogflow/v2/document.pb.cc:4764:1: internal compiler error: Segmentation fault } ^Please submit a full bug report,with preprocessed source if appropriate.See <https://bugs.opensuse.org/> for instructions.gmake[2]: *** [external/googleapis/CMakeFiles/google_cloud_cpp_cloud_dialogflow_v2_protos.dir/build.make:524: external/googleapis/CMakeFiles/google_cloud_cpp_cloud_dialogflow_v2_protos.dir/google/cloud/dialogflow/v2/document.pb.cc.o] Error 1gmake[1]: *** [CMakeFiles/Makefile2:3005: external/googleapis/CMakeFiles/google_cloud_cpp_cloud_dialogflow_v2_protos.dir/all] Error 2gmake[1]: *** Waiting for unfinished jobs....

Anything else we should know about your project / environment

N/A