toRealPath throws InternalError: Should not get here on Windows (paths with junctions)

[Rory O'Donnell]

Hi Dawid,

I will update bug.

Rgds,Rory

On 15/03/2016 12:53, Dawid Weiss wrote:
> This must be more complicated than I thought because the same code
> passes with flying colors on another (fairly fresh install) of Windows
> 10... I don't know what the difference is, to be honest (I have
> Windows 10 Pro N). I'll try to dig deeper, time permitting, but
> perhaps a comment on the eventual Jira issue would be sensible (can't
> do it myself, no Jira access).
>
> Dawid
>
> On Tue, Mar 15, 2016 at 1:01 PM, Dawid Weiss <dawid.weiss at gmail.com> wrote:
>> I filed an issue (Review ID: JI-9032181). In any case, I checked with
>> Java 7, 8 and the ea:
>>
>> Java(TM) SE Runtime Environment (build
>> 9-ea+109-2016-03-09-181019.javare.4620.nc)
>>
>> The issue only affects Windows 10 (tested on 64-bit only), Windows 7
>> behaves fine. The following sequence is enough to get the stack trace:
>>
>> mkdir foo
>> mklink /J bar foo
>> java -cp . Test bar
>>
>> The Test.java code is:
>> import java.io.*;
>> import java.nio.file.*;
>>
>> public class Test {
>>    public static void main(String[] args) throws Exception {
>>      Path p = Paths.get(args[0]);
>>      System.out.println("p.toRealPath(): " + p.toRealPath());
>>    }
>> }
>>
>> and the stack trace:
>>
>> Exception in thread "main" java.lang.InternalError: Should not get here
>>          at sun.nio.fs.WindowsNativeDispatcher.GetFinalPathNameByHandle(Native
>> Method)
>>          at sun.nio.fs.WindowsLinkSupport.getFinalPath(WindowsLinkSupport.java:77)
>>          at sun.nio.fs.WindowsLinkSupport.getRealPath(WindowsLinkSupport.java:242)
>>          at sun.nio.fs.WindowsPath.toRealPath(WindowsPath.java:840)
>>          at sun.nio.fs.WindowsPath.toRealPath(WindowsPath.java:44)
>>          at Test.main(Test.java:10)
>>
>> Dawid
>>
>> On Tue, Mar 15, 2016 at 12:28 PM, Alan Bateman <Alan.Bateman at oracle.com> wrote:
>>> On 15/03/2016 11:19, Dawid Weiss wrote:
>>>> I couldn't find an appropriate bug in bugzilla, but this fails
>>>> reliably for me with Java 8 and 9 on Windows 10, 64-bit:
>>>>
>>>> mkdir foo
>>>> mklink /J bar foo
>>>> cd bar
>>>> java -cp Test .
>>>>
>>>> where Test.java is as simple as:
>>>>
>>>> import java.io.*;
>>>> import java.nio.file.*;
>>>>
>>>> public class Test {
>>>>     public static void main(String[] args) throws Exception {
>>>>       System.out.println("p.toRealPath(): " +
>>>> Paths.get(args[0]).toRealPath());
>>>>     }
>>>> }
>>>>
>>>> The thrown error shows:
>>>>
>>>> Exception in thread "main" java.lang.InternalError: Should not get here
>>>>           at
>>>> sun.nio.fs.WindowsNativeDispatcher.GetFinalPathNameByHandle(Native
>>>> Method)
>>> There are a number of win32 functions that this code uses GetProcAddress to
>>> get their address in kernel32. This dates back to when we had to support
>>> Windows XP. This should be cleaned up now. Doesn't explain why you are
>>> seeing though, can you submit a bug?
>>>
>>> -Alan

-- 
Rgds,Rory O'Donnell
Quality Engineering Manager
Oracle EMEA , Dublin, Ireland