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Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.
assignee = None
closed_at = <Date 2016-12-07.14:58:58.113>
created_at = <Date 2016-12-07.14:47:11.557>
labels = ['interpreter-core', '3.7']
title = 'Memory leak in dict.pop()'
updated_at = <Date 2016-12-07.14:58:58.110>
user = 'https://github.com/mgedmin'
activity = <Date 2016-12-07.14:58:58.110>
actor = 'xiang.zhang'
assignee = 'none'
closed = True
closed_date = <Date 2016-12-07.14:58:58.113>
closer = 'xiang.zhang'
components = ['Interpreter Core']
creation = <Date 2016-12-07.14:47:11.557>
creator = 'mgedmin'
dependencies = 
files = 
hgrepos = 
issue_num = 28894
keywords = 
message_count = 3.0
messages = ['282623', '282624', '282626']
nosy_count = 2.0
nosy_names = ['mgedmin', 'xiang.zhang']
pr_nums = 
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '28147'
type = None
url = 'https://bugs.python.org/issue28894'
versions = ['Python 3.6', 'Python 3.7']
The text was updated successfully, but these errors were encountered:
Run the following script with Python 3.6.0rc1:
o = O()
for n in range(20):
o.x = 42
You can observe the memory usage of the Python process growing exponentially.
E.g. in bash:
ulimit -v 1000000 # don't push other processes into swap please
Traceback (most recent call last):
File "break.py", line 7, in <module>
o.x = 42
Sorry, something went wrong.
If you're curious where this happens in real life, py.test's CaptureManager.deactivate_funcargs() does
and I found it by running 'tox -e py36' on https://github.com/mgedmin/eazysvn
This is the same problem as bpo-28147.
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