base: Fix gcc-13 build error

This change adds relevant errors that allow building with
gcc-13.

Change-Id: Ib97a90ef647a9cd9ec1bf1f2bde61daca85de427
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/68497
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
3 files changed