test_ioctl skipped -- Unable to open /dev/tty

[Marco-Sulla]

BPO	39813
Nosy	@ericvsmith, @Marco-Sulla

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

Show more details

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-03-01.14:29:15.207>
labels = ['build', 'tests', '3.9']
title = 'test_ioctl skipped -- Unable to open /dev/tty'
updated_at = <Date 2020-03-01.19:26:27.067>
user = 'https://github.com/Marco-Sulla'

bugs.python.org fields:

activity = <Date 2020-03-01.19:26:27.067>
actor = 'Marco Sulla'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Tests']
creation = <Date 2020-03-01.14:29:15.207>
creator = 'Marco Sulla'
dependencies = []
files = []
hgrepos = []
issue_num = 39813
keywords = []
message_count = 3.0
messages = ['363063', '363070', '363081']
nosy_count = 2.0
nosy_names = ['eric.smith', 'Marco Sulla']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'compile error'
url = 'https://bugs.python.org/issue39813'
versions = ['Python 3.9']

Linked PRs

• gh-83994, gh-132843: Fix and improve test_ioctl #132848
• [3.13] gh-83994, gh-132843: Fix and improve test_ioctl (GH-132848) #132850

[Marco-Sulla]

During make test, I get the error in the title.

(venv_3_9) marco@buzz:~/sources/cpython_test$ ll /dev/tty
crw-rw-rw- 1 root tty 5, 0 Mar 1 15:24 /dev/tty

[ericvsmith]

Can you give us some information about your operating system? Did you build this version of python yourself? Assuming so, how did you build it? Please show us the header you see when starting this version of python. How are you invoking this test?

[Marco-Sulla]

OS: Lubuntu 18.04.4

Steps to reproduce:

sudo apt-get install git libbz2-dev liblzma-dev uuid-dev libffi-dev libsqlite3-dev libreadline-dev libssl-dev libgdbm-dev libgdbm-compat-dev tk-dev libncurses5-dev
git clone https://github.com/python/cpython.git
cd cpython
CC=gcc-9 CXX=g++-9 ./configure --enable-optimizations --with-lto
make -j 4
make test

marco@buzz:~/sources/cpython_test$ python3.9
Python 3.9.0a0 (heads/master-dirty:d8ca2354ed, Oct 30 2019, 20:25:01)
[GCC 9.2.1 20190909] on linux

[serhiy-storchaka]

You can reproduce this on Linux by running tests with setsid.

It seems that the tests were always skipped on CI and buildbots because /dev/tty was not available or not attached to the process. But one test (test_ioctl_set_window_size) did not depend on this and could be run. #132848 makes only tests that depend on /dev/tty be skipped.