[Bug bootstrap/71071] [7 regression] ICE --enable-checking=fold : fold check: original tree changed by fold

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71071

--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Did we forget to unshare_expr somewhere?