ned14
Windows does not like default `llfio::open` arguments
The default flags argument on windows (flag::none) is something windows doesn't like for some reason. On my windows 10 machine, the open succeeds but llfio::read gives me a "not supported" error. Changing flags to flag::multiplexable (at minimum) does work though. A bit uncertain as to why this is being caused, so am curious if it's a bug in llfio or if it's something weird happening when llfio opens the file?
I would be very surprised if the defaults don't "just work" given how much this codebase is used on Windows.
I also traced through the code and I can see no obvious reason why opening a file would give an error.
Can you perhaps give me an example piece of code which fails for you?
The opening of the file doesn't fail. The error is delayed until the first read. As soon as llfio::read is called when flags is set to flag::none, windows (at least my version) returns the error Not supported: Not supported: "". I think the most relevant example woudl be the read_entire_file1.cpp example. When I used that example to learn how to implement a file that read into a string, that's when I got that (very odd) error (when I did the actual read). But when I set flag::multiplexable, windows is just fine.
