[New-bugs-announce] [issue28991] Fix obscure lru_cache reentrancy bug

[Raymond Hettinger]

New submission from Raymond Hettinger:

Call __len__ directly inside the LRU cache code rather than using len().  This helps further encapsulate the cache internals making it less dependent on parts of the environment that are subject to change.

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assignee: serhiy.storchaka
components: Library (Lib)
files: fix_lru_len_reentrancy.diff
keywords: patch
messages: 283426
nosy: rhettinger, serhiy.storchaka
priority: normal
severity: normal
stage: patch review
status: open
title: Fix obscure lru_cache reentrancy bug
type: behavior
versions: Python 3.5, Python 3.6, Python 3.7
Added file: http://bugs.python.org/file45927/fix_lru_len_reentrancy.diff

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28991>
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