[Bug debug/72828] [5/6/7 Regression] ICE in clone_tree_partial when compiling with -fdebug-types-section

[ott at fb dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72828

--- Comment #2 from Giuseppe Ottaviano <ott at fb dot com> ---
Martin, I noticed you marked this as "[5/6/7 Regression]", but to be clear the
bug is present since at least 4.9 (the oldest version I tested).
It's only the attached reduction that is sensitive to compiler version. I can
provide repros for 4.9 and 5.1 as well.