[Bug 56867] dynamic_cast too slow on wine compared to windows

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=56867

--- Comment #5 from cqwrteur  ---
(In reply to cqwrteur from comment #4)
> dynamic cast is here
>
> https://github.com/trcrsired/fast_io/blob/
> 742950421eedc149585122059cd8196545e28dac/include/fast_io_legacy_impl/filebuf/
> fp_hack/msvc_stl.h#L84
>
> Wine source shows it does strcmp which is slow. Microsoft has changed the
> implementation to not be strcmp-ed. Though i do not know how they've done it.
>
> https://github.com/wine-mirror/wine/blob/
> f9af971bd7d6799d54436ba9f7fa327b7edfbc77/dlls/msvcrt/cpp.c#L819

https://youtu.be/ARYP83yNAWk?si=D0GjCDbYwLeEXW_1&t=4473

Herb Sutter (Microsoft VC Team Lead) said, "We know Microsoft did string
comparison; we are fixing that."