New submission from Ray Donnelly <rdonne...@anaconda.com>: Over on the Anaconda Distribution we received a (private) bug report about a crash when trying to use scons. I thought initially it was due to one of our patches but I tested it out with official CPython and also with WinPython and ran into the same crash.
To reproduce this, from cmd.exe on CPython (here I installed CPython as part of Visual Studio 2017, then updated it to the latest 3.6.4 release): ``` set "PATH=C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python36_64\Scripts\..;%PATH%" python.exe .. python Fatal Python error: Py_Initialize: unable to load the file system codec ModuleNotFoundError: No module named 'encodings' Current thread 0x00000328 (most recent call first): ``` The trigger for this bug is the following batch code in scons.bat: https://bitbucket.org/scons/scons/src/c0172db149b1a151eeb76910d55c81746bfede05/src/script/scons.bat?at=default&fileviewer=file-view-default#scons.bat-19 My current thinking is that the best fix here is to modify get_progpath()/get_program_full_path() so that it uses PathCchCanonicalizeEx() at https://github.com/python/cpython/blob/9bee329130aae5a13050c08dab9d349b76e66835/PC/getpathp.c#L558-L559 ---------- components: Windows messages: 309242 nosy: Ray Donnelly, paul.moore, steve.dower, tim.golden, zach.ware priority: normal severity: normal status: open title: Windows Python cannot handle an early PATH entry containing ".." and python.exe type: crash versions: Python 3.6 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue32457> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
