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

[Rory O'Donnell]

Hi Dawid,

I updated the bug.

Rgds,Rory

On 05/04/2016 11:47, Dawid Weiss wrote:
> I did a bit more digging. I can reproduce this every time on my machine if:
>
> 1) I open cmd from total commander (64 bit or 32 bit, doesn't matter);
> 2) from that cmd run the simple example in Java that attempts to
> resolve real path; this ends in InternalError.
>
> On the other hand, if I run cmd from the start menu, everything works
> fine. total commander is clean
> (checked md5 to rule out viruses or whatever).
>
> I have no idea what this is -- I think the problem can be marked as
> "non-reproducible", maybe it's a glitch in my system somewhere. Sorry
> for the noise.
>
> Dawid
>
>
> On Tue, Mar 15, 2016 at 1:56 PM, Rory O'Donnell
> <rory.odonnell at oracle.com> wrote:
>> 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
>>

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