[issue32457] Windows Python cannot handle an early PATH entry containing ".." and python.exe

Change by Steve Dower : -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker ___ ___ P

[issue32457] Windows Python cannot handle an early PATH entry containing ".." and python.exe

Steve Dower added the comment: New changeset 1d3c518c5ecbd78478738f068f4f035f81f035f9 by Steve Dower in branch '3.6': bpo-32457: Improves handling of denormalized executable path when launching Python (GH-5756) (#5818) https://github.com/python/cpython/commit/1d3c518c5ecbd78478738f068f4f035f8

[issue32457] Windows Python cannot handle an early PATH entry containing ".." and python.exe

Change by Steve Dower : -- pull_requests: +5594 ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.p

[issue32457] Windows Python cannot handle an early PATH entry containing ".." and python.exe

miss-islington added the comment: New changeset e5a9b3574c89a070fbc43caf541759f504e3d492 by Miss Islington (bot) in branch '3.7': bpo-32457: Improves handling of denormalized executable path when launching Python (GH-5756) https://github.com/python/cpython/commit/e5a9b3574c89a070fbc43caf54175

[issue32457] Windows Python cannot handle an early PATH entry containing ".." and python.exe

Change by miss-islington : -- pull_requests: +5592 ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: https://mai

[issue32457] Windows Python cannot handle an early PATH entry containing ".." and python.exe

Steve Dower added the comment: New changeset 48e8c82fc63d2ddcddce8aa637a892839b551619 by Steve Dower in branch 'master': bpo-32457: Improves handling of denormalized executable path when launching Python (GH-5756) https://github.com/python/cpython/commit/48e8c82fc63d2ddcddce8aa637a892839b5516

[issue32457] Windows Python cannot handle an early PATH entry containing ".." and python.exe

Change by Steve Dower : -- keywords: +patch pull_requests: +5534 stage: needs patch -> patch review ___ Python tracker ___ ___ Python

[issue32457] Windows Python cannot handle an early PATH entry containing ".." and python.exe

Change by Steve Dower : -- assignee: -> steve.dower ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: https://m

[issue32457] Windows Python cannot handle an early PATH entry containing ".." and python.exe

Eryk Sun added the comment: For extra measure, you may want to normalize `prefix` prior to calculating its length n in gotlandmark(). Then it would be reliable to truncate it via `prefix[n] = '\0'` after joining with `landmark`. Or at least add a comment there or in the calling function, sear

[issue32457] Windows Python cannot handle an early PATH entry containing ".." and python.exe

Change by Steve Dower : -- stage: -> needs patch versions: +Python 3.7, Python 3.8 ___ Python tracker ___ ___ Python-bugs-list maili

[issue32457] Windows Python cannot handle an early PATH entry containing ".." and python.exe

Steve Dower added the comment: I agree that explicitly normalizing in PC/getpathp.c is the correct approach. As far as I'm aware, GetModuleFileNameW(NULL) can never fail other than a buffer that is too small, so that whole function can probably be simplified to abort if it happens and just re

[issue32457] Windows Python cannot handle an early PATH entry containing ".." and python.exe

Eryk Sun added the comment: Here's a way to trigger this error that's unrelated to the PATH environment variable: >>> subprocess.call('python', executable=r'C:\Program Files\Python36\.\python.exe') Fatal Python error: Py_Initialize: unable to load the file system codec ModuleNotFo

[issue32457] Windows Python cannot handle an early PATH entry containing ".." and python.exe

Ray Donnelly added the comment: .. though I will also ask the scons people to change this to use pushd and %CD% instead. Even if you were to make Python capable of handling such bad input, who knows what other programs will fail, and build systems should be extra careful not to mess the envir

[issue32457] Windows Python cannot handle an early PATH entry containing ".." and python.exe

New submission from Ray Donnelly : 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. T