Since it has virtual methods, it should also have a virtual destructor. My compiler complains otherwise, which breaks my build. Change-Id: I44bba97b76931bab6e3511fcdee79831080c12d4 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34215 Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Maintainer: Jason Lowe-Power <power.jg@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>