[Bug c++/67207] ice in infer_nonnull_range_by_attribute with -O3

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67207

--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
I should have mentioned that flag -O3 is also required.