From: Guido van Rossum <guido@python.org>
Date: Wed, 12 Jun 2002 14:41:50 +0000 (+0000)
Subject: Backport 1.15:
X-Git-Tag: v2.2.2b1~331
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=76c63a4980c7c08052b2284300af6a31fd8c650a;p=thirdparty%2FPython%2Fcpython.git

Backport 1.15:

Add a testcase to ensure that cycles going through the __class__ link
of a new-style instance are detected by the garbage collector.
---

diff --git a/Lib/test/test_gc.py b/Lib/test/test_gc.py
index 22f7e74114be..23bb7c5cc9eb 100644
--- a/Lib/test/test_gc.py
+++ b/Lib/test/test_gc.py
@@ -83,6 +83,12 @@ def test_newinstance():
     gc.collect()
     del a
     expect_nonzero(gc.collect(), "newinstance(2)")
+    del B, C
+    expect_nonzero(gc.collect(), "newinstance(3)")
+    A.a = A()
+    del A
+    expect_nonzero(gc.collect(), "newinstance(4)")
+    expect(gc.collect(), 0, "newinstance(5)")
 
 def test_method():
     # Tricky: self.__init__ is a bound method, it references the instance.