https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89507
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- The reason to change tree.c rather than doing something on the cp/init.c side is the comment there that the checking ought to be done before conversion to std::size_t (and also, we'd fold to sizetype just for the purposes of the diagnostics and throw away the result).
