The second release candidate for GCC 12.3 is available from https://gcc.gnu.org/pub/gcc/snapshots/12.3-RC-20230505/
and shortly its mirrors. It has been generated from git commit r12-9512-g27432426d24cf0. The fix for PR106890 caused PR109666 and was reverted. A read from uninitialized _M_string_length as part of an added assertion to libstdc++ was fixed (PR109703). A similar issue in the C++ frontend during gimplification was fixed as well. I have so far bootstrapped and tested the release candidate on x86_64-unknown-linux-gnu. Please test it and report any issues to bugzilla. If all goes well, we'd still like to release 12.3 on Tuesday, May 9th.
