[Bug target/81229] ICE in c_tree_chain_next on aarch64

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81229

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
It'd be terrific to know what caused this, so I'm bisecting.  But it'll take a
while.