[Bug c++/110861] Bad codegen leading to runtime segfault when mixing import and #include

[headch at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110861

--- Comment #1 from Christopher Head <headch at gmail dot com> ---
Note that I ran into this while trying to find a small repro case for the same
symptoms (uninitialized “this” and segfault using a string_view) in a larger
project, where I originally saw the same thing happen while only importing
stdlib headers, not including any of them, and eventually made this as a
smaller example.