From: Guido van Rossum <guido@python.org>
Date: Wed, 9 Nov 2016 21:23:04 +0000 (-0800)
Subject: Issue #28649: typing-clear-caches.patch
X-Git-Tag: v3.6.0b4~110^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9b107560191085a0c5462ad878e1e9eeae94ba82;p=thirdparty%2FPython%2Fcpython.git

Issue #28649: typing-clear-caches.patch
---

diff --git a/Lib/typing.py b/Lib/typing.py
index e748fd9cdfae..f3e446e61bda 100644
--- a/Lib/typing.py
+++ b/Lib/typing.py
@@ -611,12 +611,16 @@ def _check_generic(cls, parameters):
                         ("many" if alen > elen else "few", repr(cls), alen, elen))
 
 
+_cleanups = []
+
+
 def _tp_cache(func):
     """ Caching for __getitem__ of generic types with a fallback to
     original function for non-hashable arguments.
     """
 
     cached = functools.lru_cache()(func)
+    _cleanups.append(cached.cache_clear)
     @functools.wraps(func)
     def inner(*args, **kwds):
         try: