filesystem::canonical fails to resolve relative path to a mapped folder

[HamedSabri-adsk]

Describe the bug

It appears to be a bug in gulark's filesystem::canonical which fails to properly resolve relative path to a mapped drive. C++17 std::filesystem::canonical doesn't have this issue and properly resolves the relative path.

In this scenario C:\MOUNT_ME is a folder that is mapped to a folder on an external hard drive G:\RTS on Windows:

    Plugin and external drive or USB Drive to your computer.
    Go to Disk Manager.
    Right Click on your connected drive.
    Select "Change Drive Letter and Path..."
    Select "Add".
    Use "Mount in the following empty NTFS folder:"
    Locate the folder you want to mount to.

ghc::filesystem::canonical

auto fullPath = ghc::filesystem::path(currentFileDir).append(relativeFilePath); 
// C:\\MOUNT_ME\\RTS\\RTS\\master_files\\..\\referenced_files\\USD\\barrelTests\\Library\\Assets\\Barrels\\Barrels.usd
auto path = ghc::filesystem::canonical(fullPath, errorCode); // error 

std::filesystem::canonical

auto fullPath = std::filesystem::path(currentFileDir).append(relativeFilePath);
//"C:\\MOUNT_ME\\RTS\\RTS\\master_files\\../referenced_files/USD/barrelTests/Library/Assets/Barrels/Barrels.usd"
auto path = std::filesystem::canonical(fullPath, errorCode); // Ok, good 

Expected behavior ghc::filesystem::canonical should behave similar to std::filesystem::canonical.

Additional context https://github.com/Autodesk/maya-usd/pull/1422

[gulrak]

Thanks for reporting this! I'll try to get a fix into v1.5.6 scheduled for Sunday.

[HamedSabri-adsk]

Awesome! Thank you for quick response.

[gulrak]

Sorry for the delay, working on fixing up the new release now, should be out in a an hour or two.

[gulrak]

This is now part of release v1.5.6