[Bug 40421] it is the function used by Windows SetFilePointer

https://bugs.winehq.org/show_bug.cgi?id=40421

--- Comment #8 from Nikolay Sivov  ---
If you have an application, it's really easy to get a log from it, use wiki
section I linked at comment 4. Basically all you need to do is to run your
program from terminal, and set WINEDEBUG variable before running it. So if
usually you run it as 'wine yourprogram.exe', now run it as
'WINEDEBUG=+file,+relay,+tid wine yourprogram.exe >> ~/bug40421.log 2>&1' and
attach resulting file named bug40421.log created in you home directory. Without
that I don't think we can do much to help you.