sys-devel/gcc-10.3.0-r2 resolves Bug 801871 so it'll be good idea to make it stable
Note that linux-headers-5.13 isn't yet stable, but yes, I think it's probably something we should do now to avoid loads of duplicates. It's a small change.
amd64 done
sparc stable
x86 stable
arm done
arm64 done
ppc done
ppc64 done
hppa done (thanks Dakon)
bug done