It turns out, this is really a bug in gcc 12.1.
The error can be seen online: https://godbolt.org/z/zMqG8W7WE.
It is being tracked by the following tickets:
- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105651
- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105329
This repository reproduces issue [BUG] build fails with libstdc++ 12.1.0 with Google's Benchmark library.
You can obtain the build error from the CI at https://github.com/jdoubleu/googlebenchmark-issue-1398/actions.
You can also build the project inside a Docker container. On a linux host, with Docker installed, run: ./run-docker.sh.
The run-docker-benchmark.sh script clones the Google Benchmark library and builds it with bazel inside the same gcc:latest Docker container.