Re: [filesystem] create_directories fails on exFat formatted disk under Windows

From: Andrey Semashev (andrey.semashev_at_[hidden])
Date: 2022-05-12 12:11:46

On 5/12/22 11:33, Chris Trueman via Boost wrote:
> Using an exFat formatted disk with Windows.
> 
> Start with a path:
> 
> e:\tmp
> 
> Call filesystem::create_directories("e:\\tmp\\boost")
> 
> This should succeed, creating the boost folder in e:\tmp.
> 
> It fails with boost 1.79.0. It tries to create e:\tmp which already exists.
> 
> In boost 1.78.0 this works as expected.
> 
> I believe the root cause is the change to status(...). It calls
> detail::symlink_status(...) which calls GetFileInformationByHandleEx which
> (at least for the params used in filesystem) doesn't work on exFat
> formatted disks.

Can you tell what error code GetFileInformationByHandleEx returns? Also,
can you test if the other path using GetFileInformationByHandle works on
this filesystem?

PS: You can report problems on GitHub:

https://github.com/boostorg/filesystem/issues