[issue24482] itertools.tee causes segfault in a multithreading environment, while the equivalent implementation does'nt

[Dmitry Odzerikho]

Changes by Dmitry Odzerikho :


--
components: Library (Lib)
nosy: Dmitry Odzerikho
priority: normal
severity: normal
status: open
title: itertools.tee causes segfault in a multithreading environment, while the 
equivalent implementation does'nt
type: crash
versions: Python 2.7

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[issue24482] itertools.tee causes segfault in a multithreading environment, while the equivalent implementation doesn't

[Dmitry Odzerikho]

New submission from Dmitry Odzerikho:

Hi,

I'm using iterators returned by itertools.tee in different threads. The 
original iterator passed to itertools.tee is thread-safe, however, it doesn't 
guarantees that the cloned iterators are thread safe too. However the 
equivalent implementation of itertools.tee in pure Python seems to work fine in 
this case. Is it expected or I'm doing something wrong?

I'm attaching a simple example that shows the behaviour.

--
title: itertools.tee causes segfault in a multithreading environment, while the 
equivalent implementation does'nt -> itertools.tee causes segfault in a 
multithreading environment, while the equivalent implementation doesn't
Added file: http://bugs.python.org/file39756/test_segfault.py

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[issue24482] itertools.tee causes segfault in a multithreading environment, while the equivalent implementation doesn't

[Dmitry Odzerikho]

Changes by Dmitry Odzerikho :


Added file: http://bugs.python.org/file39757/test_segfault.py

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[issue24482] itertools.tee causes segfault in a multithreading environment, while the equivalent implementation doesn't

[Dmitry Odzerikho]

Changes by Dmitry Odzerikho :


Removed file: http://bugs.python.org/file39756/test_segfault.py

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