llvm-project

5a8a7ee9 - [llvm][vfs] Preserve paths for fallback/fallthrough in RedirectingFileSystem (#85307)

[llvm][vfs] Preserve paths for fallback/fallthrough in RedirectingFileSystem (#85307) When we lookup in the external filesystem, do not remove . and .. components from the original path. For .. this is a correctness issue in the presence of symlinks, while for . it is simply better practice to preserve the original path to better match the behaviour of other filesystems. The only modification we need is to apply the working directory, since it could differ from the external filesystem. rdar://123655660