[Bug libstdc++/70609] std::experimental::filesystem::copy fails if the file size is 0 bytes

[fruko_eto at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70609

--- Comment #1 from furkan <fruko_eto at hotmail dot com> ---
Also worth to note that I've tested a similar program with Boost::Filesystem,
QFile and Poco::File they all worked, so I don't think there is a
system-related bug