[Bug c++/91606] [9 regression] Optimization leads to invalid code

[m.cencora at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91606

--- Comment #13 from m.cencora at gmail dot com ---
You can remove my_array from the test case. I put there only to show that using
it instead of std::array allows to workaround the bug.