[issue35261] readline.c: PyOS_InputHook not protected against SIGWINCH

[STINNER Victor]

STINNER Victor  added the comment:

You don't use properly ctypes. This issue is unrelated to signals. The fix is: 
HOOKFUNC = CFUNCTYPE(c_char_p,).

--
resolution:  -> not a bug
stage:  -> resolved
status: open -> closed

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[issue35261] readline.c: PyOS_InputHook not protected against SIGWINCH

[pmpp]

pmpp  added the comment:

expected result would look like:

python3.6 -i -u -B pih.py
>>> Segmentation fault (core dumped)

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[issue35261] readline.c: PyOS_InputHook not protected against SIGWINCH

[pmpp]

pmpp  added the comment:

oops
 
use: python3 -i -u -B pih.py 
to run crash test

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[issue35261] readline.c: PyOS_InputHook not protected against SIGWINCH

[STINNER Victor]

STINNER Victor  added the comment:

Can you please describe what happens and what is the expected behavior?

When I run "python3 pih.py", the script exits immediately and then a get many 
"kill: (5441) - No such process" errors in bash.

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nosy: +vstinner

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[issue35261] readline.c: PyOS_InputHook not protected against SIGWINCH

[pmpp]

New submission from pmpp :

when using PyOS_InputHook from within readline module
two signals are to be handled SIGINT and SIGWINCH
SIGINT is really usefull in case hook has a problem though in some case it 
should be nice to prevent it too (async loop in repl background) 

but SIGWINCH is an annoyance and often lead to interpreter crash.

sample file:
 linux crash test under ubuntu bionic python 3.7.1 gcc7

more elaborated test case https://github.com/pmp-p/aioprompt

--
components: Extension Modules
files: pih.py
messages: 329969
nosy: pmpp
priority: normal
severity: normal
status: open
title: readline.c: PyOS_InputHook not protected against SIGWINCH
type: crash
versions: Python 3.7
Added file: https://bugs.python.org/file47935/pih.py

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