Re: [PATCH v3 0/1] MR9578: win32u: Ignore statup cmd show mode for owned windows.

[Rémi Bernon]

Rémi Bernon (@rbernon) commented about dlls/win32u/window.c:
> if ((!(style & (WS_POPUP | WS_CHILD))
>           || ((style & (WS_POPUP | WS_CHILD | WS_CAPTION)) == (WS_POPUP | WS_CAPTION)))
> +         && first_window && !get_window_relative( hwnd, GW_OWNER )
>          && InterlockedExchange( &first_window, 0 ))

I think first_window should be read with ReadNoFence at least, at it's written through atomic ops.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/9578#note_123626