[Bug 56956] MSVC cl.exe 19.* fails to flush intermediate file

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=56956

--- Comment #14 from cqwrteur  ---
(In reply to cqwrteur from comment #13)
> (In reply to Piotr Caban from comment #9)
> > (In reply to Fabian Maurer from comment #8)
> > > CCing reviewer then. Piotr, mind taking a look here?
> >
> > Sure, I will try to reproduce the bug on Monday.
>
> _IOMYBUF is the IO_USERBUF? If I remember correctly?

ok it is CRTBUF

https://bugs.winehq.org/attachment.cgi?id=73552

Here was the old patch i put for the meaning of these flags value