upx 3.92 - compressing a Python pyd file generates "DLL load failed: Invalid access to memory location."

[AraHaan]

What's the problem (or question)?

Compressing a Python pyd file (both 32 and 64 bit versions for Python 3.5 and Python 3.6 Makes it unable to be imported.

What should have happened?

The import to work as if the files modules was not compressed.

Do you have an idea for a solution?

No idea for the fix.

How can we reproduce the issue?

1. Use Cython to compile a Python Script
2. Compress with UPX.
3. Try to import the module.
4. The same Error as above happens with something similar to this Traceback

Traceback (most recent call last):
  File "E:\Users\Elsword\Desktop\DecoraterBot\Async\\zipmaker\make_zip.py", line
 9, in <module>
    import py2pycx
  File "E:\Users\Elsword\Desktop\DecoraterBot\Async\zipmaker\py2pycx\__init__.py
", line 13, in <module>
    from . import _pycx_hook
  File "_pycx_hook.py", line 26, in init _pycx_hook (_pycx_hook.c:1335)
ImportError: DLL load failed: Invalid access to memory location.

Please tell us details about your environment.

• UPX version used (upx --version): 3.92
• Operating System and version: Windows 7 Ultimate x64 (SP1) build 6701
• CPU architecture: amd64

Original:
http://puu.sh/t2icZ/7b96f2215c.zip

Compressed:
http://puu.sh/t2idI/8184d6af51.zip

[ml1050]

Does UPX 3.91 work for you?

I'm not sure how to test your pyd files. Can you give me some more information what I need to install to test them? (I will test them on linux with wine - I do not have a real windows environment).

[AraHaan]

Python 3.5.x and Python 3.6.0 for Windows. The .cp35 pyd files require python35.dll the other .cp36 pyd files require python36.dll The 1st import for the non packed ones should succeed while the packed ones should fail for some reason.

[ml1050]

Unfortunately python seems to require lots of DLLs which are not available under wine, so I can not test your files. But if UPX 3.91 works for you, then there is a chance, that I've already fixed this problem on the devel branch.

[markus-oberhumer]

We now have automated builds of the devel branch - please download the current win32 version from

https://github.com/upx/upx-automatic-builds/tree/devel-20170115-120150-ac4b51-travis/i386-w64-mingw32-gcc-4.6-release

[markus-oberhumer]

Please try the fresh UPX 3.93 release and close this issue if fixed.

[AraHaan]

ok, I am going to try that.

[AraHaan]

Ok, latest release fixed it thanks.