At 04:42 PM 12/12/2004, Ben Hutchings wrote:

On a visual inspection some time back I also noted that there's no special handling for empty root directories on Windows. The problem with these is that while even an empty directory normally has entries for "." and "..", so that FindFirstFile can return something, root directories on FAT volumes (and I think NTFS as well) do not have these and Windows doesn't fake them, so FindFirstFile on an empty root returns INVALID_HANDLE_VALUE. Note that this only applies to real root directories, not to the roots of drives that are mapped to sub-directories using subst or file sharing. I never got round to checking whether the Boost code actually handles this or not, as I only use Windows at work and we don't use Boost.Filesystem there. Perhaps someone could check that out?

Good catch! I can confirm that it is indeed a problem. Should have a fix in a day or two. The last error code is set to ERROR_FILE_NOT_FOUND in the particular case you are talking about, and something else otherwise, so it is possible to distinguish it from other conditions. --Beman