[Bug objc/101666] Objective-C frontend crashes with `-fobjc-nilcheck`

[mhjacobson at me dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101666

--- Comment #3 from Matt Jacobson <mhjacobson at me dot com> ---
<https://gcc.gnu.org/pipermail/gcc-patches/2021-August/577396.html>