ADDITIONAL SYSTEM INFORMATION :
Windows 10 22H2

A DESCRIPTION OF THE PROBLEM :
Path::toRealPath cannot return a "real" path for a file that is inside of a directory that is a symbolic link.
Observed when zip file system is used as the provider relies on this function.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
mkdir C:\new_dir
mkdir C:\old_dir
mklink /D C:\old_dir C:\new_dir
cd new_dir
type NUL > file.txt

java.nio.file.Path.of("C:\\old_dir\\file.txt").toRealPath()

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
"C:\new_dir\file.txt" is returned as a real path
ACTUAL -
| Exception java.nio.file.FileSystemException: C:\old_dir\file.txt: Incorrect function
| at WindowsException.translateToIOException (WindowsException.java:92)
| at WindowsException.rethrowAsIOException (WindowsException.java:103)
| at WindowsException.rethrowAsIOException (WindowsException.java:108)
| at WindowsLinkSupport.getFinalPath (WindowsLinkSupport.java:112)
| at WindowsLinkSupport.getRealPath (WindowsLinkSupport.java:271)
| at WindowsPath.toRealPath (WindowsPath.java:944)
| at WindowsPath.toRealPath (WindowsPath.java:42)
| at (#17:1)

---------- BEGIN SOURCE ----------
java.nio.file.Path.of("C:\\old_dir\\file.txt").toRealPath()
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Somewhat of an "alternative".
public static Path toRealPath(Path path) throws IOException {
if (!Files.exists(path))
return path;
loop:
do {
var parent = path;
while ((parent = parent.getParent()) != null) {
try {
var source = Files.readSymbolicLink(parent);
path = source.resolve(parent.relativize(path));
continue loop;
} catch (NotLinkException _) {
}
}
return path;
} while (true);
}

FREQUENCY : always