you're receiving this canned bug because the package in summary uses the flag -Werror during build, which transforms warnings in errors, and is prone to break software when new GCC releases are added to Gentoo.
Please make sure your package does not use -Werror during build, so that it can be more future-proof for the new GCC releases.
Created attachment 183872 [details]
Created attachment 184633 [details, diff]
Remove -Werror in platforms/unix/vm-display-fbdev/Makefile.in
Fixed in =dev-lang/squeak-3.10