unfamiliar warnings when compiling the hosttools on the carrier-releaser2024 - GCC8.4.0 is intended, but GCC13.2.0 is used

As you know, I worked towards very low compiler warnings-count for the past releases.
all releases/0.4.7 - releases/0.4.14 do currently have zero warnings for GCC4.7.2 toolchain dbg-cfg on Linux-builders and Windows-builders (their primary toolchain)
releases/0.4.14 does currently has 6 warnings for GCC8.4.0 toolchain dbg-cfg on Linux-builders and Windows-builders

But during my test-compilation for the releases/0.4.15 I got 83 "warnings." count when building on carrier-releaser2024 with GCC8.4.0 toolchain dbg-cfg (which is the intended primary toolchain for the next release)

The flex-bison-warnings I don't take that serious, but the vast majority of warnings popped up when compiling the host-tools (first 297 objects). I have never seen them yet, when compiling with GCC8.4.0 on my Windows host, and I also don't remember having seen that much on our buildslaves.

It seems to be something specific to that Linux-builder.
Therefore I created a ticket about those host-tools warnings explicitly.
buildlog_0.4.15-dev-8609-g07abea9__83warnings.txt