[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[STINNER Victor]

STINNER Victor  added the comment:

Ok, I understand, thanks for the explanation.

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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[Xavier de Gaye]

Xavier de Gaye  added the comment:

Also the existing test coverage of these functions in all the Python versions 
is very weak.

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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[Xavier de Gaye]

Xavier de Gaye  added the comment:

> What about Python 2.7?

_testcapi.set_nomemory() does not exist on Pyhton 2.7 so the changes cannot be 
tested. Applying the changes to PyRun_InteractiveLoopFlags() in 2.7 looks 
rather straightforward but there are too many differences in 
PyRun_InteractiveOneFlags() between 2.7 and 3.7.

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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[STINNER Victor]

STINNER Victor  added the comment:

Thanks for fixing this very old bug!

What about Python 2.7?

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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[Xavier de Gaye]

Change by Xavier de Gaye :


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resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[Xavier de Gaye]

Xavier de Gaye  added the comment:


New changeset ea5b545e38b3fec7ff29276b5cd59dec583ebf34 by xdegaye in branch 
'3.6':
[3.6] bpo-30696: Fix the REPL looping endlessly when no memory (GH-4160). 
(#4379)
https://github.com/python/cpython/commit/ea5b545e38b3fec7ff29276b5cd59dec583ebf34


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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[Xavier de Gaye]

Change by Xavier de Gaye :


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pull_requests: +4327

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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[Xavier de Gaye]

Xavier de Gaye  added the comment:


New changeset e0582a37c8d1776a2fd4968e9216f3a05f780276 by xdegaye in branch 
'master':
bpo-30696: Fix the REPL looping endlessly when no memory (GH-4160)
https://github.com/python/cpython/commit/e0582a37c8d1776a2fd4968e9216f3a05f780276


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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[Xavier de Gaye]

Change by Xavier de Gaye :


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versions:  -Python 3.5

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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[Xavier de Gaye]

Change by Xavier de Gaye :


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pull_requests: +4129
stage:  -> patch review

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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[Xavier de Gaye]

Changes by Xavier de Gaye :


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pull_requests:  -2416

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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[Xavier de Gaye]

Changes by Xavier de Gaye :


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pull_requests: +2416

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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[Xavier de Gaye]

Changes by Xavier de Gaye :


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pull_requests:  -2407

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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[Xavier de Gaye]

Changes by Xavier de Gaye :


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pull_requests: +2407

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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[STINNER Victor]

STINNER Victor added the comment:

See also my old issue #8070 opened 7 years ago :-)

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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[Xavier de Gaye]

Xavier de Gaye added the comment:

The patch is far too simplistic. With this patch an exception kills the 
interactive loop, for example:

$ ./python -q
>>> x
Traceback (most recent call last):
  File "", line 1, in 
NameError: name 'x' is not defined
$

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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[Xavier de Gaye]

Changes by Xavier de Gaye :


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versions: +Python 3.5, Python 3.6

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[issue30696] infinite loop in PyRun_InteractiveLoopFlags()

[Xavier de Gaye]

New submission from Xavier de Gaye:

To reproduce the problem, apply the nomemory_allocator.patch from issue 30695 
and run the following two statements that must be interrupted with ^C:
$  ./python -q
>>> import _testcapi
>>> _testcapi.set_nomemory_allocator()
sys.excepthook is missing
^Cpython: Objects/call.c:785: PyEval_CallObjectWithKeywords: Assertion 
`!PyErr_Occurred()' failed.
Aborted (core dumped)

The attached patch fixes this problem.
No PR for the moment: this patch and nomemory_allocator.patch are needed to 
demonstrate other issues.

--
components: Interpreter Core
files: infinite_loop.patch
keywords: patch
messages: 296267
nosy: haypo, xdegaye
priority: normal
severity: normal
status: open
title: infinite loop in PyRun_InteractiveLoopFlags()
type: behavior
versions: Python 3.7
Added file: http://bugs.python.org/file46959/infinite_loop.patch

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