[Bug tree-optimization/109434] [12/13 Regression] std::optional weird -Wmaybe-unitialized and behaviour with -O2

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109434

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
So the issue is that clear_bytes_written_by doesn't handle exceptions properly
and that's thru initialize_ao_ref_for_dse.