[issue34821] Crash after run Python interpreter from removed directory

[STINNER Victor]

STINNER Victor  added the comment:

I understood that the bug was fixed in Python 3.5.

Python 3.4 and older are no longer supported, I close the issue.

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nosy: +vstinner
resolution:  -> fixed
stage:  -> resolved
status: open -> closed

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[issue34821] Crash after run Python interpreter from removed directory

[Karthikeyan Singaravelan]

Karthikeyan Singaravelan  added the comment:

Just installed Python 3.4 and can confirm this is fixed in 3.5 but exists on 
Python 3.4.9 though I don't receive any segfaults though as in the picture with 
3.4.

karthi@ubuntu-s-1vcpu-1gb-blr1-01:~$ mkdir /tmp/foo
karthi@ubuntu-s-1vcpu-1gb-blr1-01:~$ cd /tmp/foo
karthi@ubuntu-s-1vcpu-1gb-blr1-01:/tmp/foo$ rm -rf /tmp/foo
karthi@ubuntu-s-1vcpu-1gb-blr1-01:/tmp/foo$ python3.4
Python 3.4.9 (default, Aug  3 2018, 23:38:40)
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
Failed calling sys.__interactivehook__
Traceback (most recent call last):
  File "/usr/lib/python3.4/site.py", line 419, in register_readline
import readline
  File "", line 2237, in _find_and_load
  File "", line , in _find_and_load_unlocked
  File "", line 2164, in _find_spec
  File "", line 1940, in find_spec
  File "", line 1911, in _get_spec
  File "", line 1879, in _path_importer_cache
FileNotFoundError: [Errno 2] No such file or directory
>>>
karthi@ubuntu-s-1vcpu-1gb-blr1-01:/tmp/foo$ python3.5
Python 3.5.2 (default, Nov 23 2017, 16:37:01)
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>

Python 3.4.9 is the latest release and Python 3.4.10 will be released in March 
2019 according to https://www.python.org/dev/peps/pep-0429/#release-schedule . 
Looking at the patch for this issue and since 3.4 is in security fixes mode I 
think this fix has a less probability of getting backported which I think is an 
explicit decision as I can see from the issue.


Thanks

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[issue34821] Crash after run Python interpreter from removed directory

[Karthikeyan Singaravelan]

Karthikeyan Singaravelan  added the comment:

Thanks for the report and steps. Can you try this on Python 3.5 ? I think this 
is the related issue issue22834 that was not fixed in Python 3.4 and has the 
same line numbers. I can't reproduce this on my Ubuntu machine with Python 
3.6.5 from Anaconda though in the path

Steps to reproduce as below : 

karthi@ubuntu-s-1vcpu-1gb-blr1-01:~$ ls /tmp/foo
ls: cannot access '/tmp/foo': No such file or directory

# Create the directory
karthi@ubuntu-s-1vcpu-1gb-blr1-01:~$ mkdir /tmp/foo
karthi@ubuntu-s-1vcpu-1gb-blr1-01:~$ cd /tmp/foo

# Load a REPL

karthi@ubuntu-s-1vcpu-1gb-blr1-01:/tmp/foo$ python3
Python 3.6.5 |Anaconda, Inc.| (default, Apr 29 2018, 16:14:56)
[GCC 7.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>

# Delete the directory
karthi@ubuntu-s-1vcpu-1gb-blr1-01:/tmp/foo$ rm -rf /tmp/foo/
karthi@ubuntu-s-1vcpu-1gb-blr1-01:/tmp/foo$ rm -rf /tmp/foo

# Load the REPL

karthi@ubuntu-s-1vcpu-1gb-blr1-01:/tmp/foo$ python3
Python 3.6.5 |Anaconda, Inc.| (default, Apr 29 2018, 16:14:56)
[GCC 7.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>
karthi@ubuntu-s-1vcpu-1gb-blr1-01:/tmp/foo$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:Ubuntu 16.04.5 LTS
Release:16.04
Codename:   xenial
karthi@ubuntu-s-1vcpu-1gb-blr1-01:/tmp/foo$ uname -a
Linux ubuntu-s-1vcpu-1gb-blr1-01 4.4.0-127-generic #153-Ubuntu SMP Sat May 19 
10:58:46 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

# Python 2

karthi@ubuntu-s-1vcpu-1gb-blr1-01:/tmp/foo$ python2
Python 2.7.12 (default, Dec  4 2017, 14:50:18)
[GCC 5.4.0 20160609] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>


Hope it helps! Unfortunately I don't have Python 3.4 on my machine to give this 
a try. If you are not able to reproduce this with Python 3.5 then I propose 
closing this as duplicate linking to the other issue. Thanks again for the 
report!

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[issue34821] Crash after run Python interpreter from removed directory

[Karthikeyan Singaravelan]

Change by Karthikeyan Singaravelan :


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nosy: +xtreak

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[issue34821] Crash after run Python interpreter from removed directory

[Игорь Никитин]

New submission from Игорь Никитин :

How to repeat: see screen.

For example, command "lsb_release" is also not found removed directory, but 
there is no crash.

Python2, in this case, run without problem.

--
files: python_bug.png
messages: 326567
nosy: Игорь Никитин
priority: normal
severity: normal
status: open
title: Crash after run Python interpreter from removed directory
type: crash
versions: Python 3.4
Added file: https://bugs.python.org/file47836/python_bug.png

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