Issue2145

Since the upgrade to jnr-posix-3.0.1 (in change set #01460e803ef3) Jython no longer runs on Windows.

>dist\bin\jython -S
Jython 2.7b2+ (default:01460e803ef3+, May 15 2014, 22:23:42)
[Java HotSpot(TM) 64-Bit Server VM (Oracle Corporation)] on java1.7.0_51
>>> import os
>>> os.stat("macbeth.txt")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NotImplementedError: stat

Without the -S, it just (Python) stack dumps during site.py.

I've traced my way into jnr.posix.WindowsPOSIX.stat, but at the point where it accesses the native code (interface jnr.posix.WindowsLibC) it gets UnsatisfiedLinkError. It's perhaps more surprising that it used to work.

Seems like this would be a showstopper for 2.7b3.

What version of Windows? Do you have a full stacktrace for the UnsatisfiedLinkError? IIRC you can increase jython's command line verbosity flag and the PythonPOSIXHandler will show a stacktrace in this situation

Windows 7. I know where the exception is raised, but I think the root cause is more likely where the "provider" is chosen. I'll step carefully through both versions and add a note here of what I find. Reversing out the change was suggested, but I'd like to look for a simple fix in "forward gear", for a few hours.

Jeff, thanks for taking a look. I'm currently flying and cannot pull to my Windows 8.1 VM despite otherwise working in-flight WiFi, but hopefully we can figure this out soon.

I've talked with Frank and we are holding beta 3 until we have some resolution on this one way or the other.

Backed out the changeset that was causing the issue (the hg backout subcommand is very convenient), specifically the upgrade of the JNR and JFFI jars. See #2110 for more details.

We will want to upgrade, but we shouldn't have trunk break in the interim. This also unblocks beta 3.

This seems to be a problem either with jnr-posix, or with jnr-ffi. I have filed an analysis at https://github.com/jnr/jnr-posix/issues/25 .

That seems to offer the possibility we could fall back to a Java implementation for Windows until its properly resolved, but I'll work with the backed-out version for now.