[Bug c++/106072] Bogus -Wnonnull warning breaks rust bootstrap

[ro at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106072

--- Comment #3 from Rainer Orth <ro at gcc dot gnu.org> ---
At least when building the devel/rust/master branch as of 20221111, the warning
doesn't occur any longer.  I haven't investigated why, though.