https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63619
--- Comment #3 from Teodor Petrov <fuscated at gmail dot com> --- We already use -Werror=delete-incomplete, so it will be easier for us, because it will just work. But if you ask me (as a user) it is best to just change the standard to force these two as errors. I know this will never happen, but I have to murmur about it. BTW: Thanks for looking at this in such a short time :)