[Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85091

--- Comment #24 from Martin Liška <marxin at gcc dot gnu.org> ---
> Please let me know if I can do anything else.

Can you please attach full diff? Am I correct that your native compiler is on
x86_64? Please attach output of --verbose.