From: Tim Peters <tim.peters@gmail.com>
Date: Thu, 11 Jul 2002 18:26:21 +0000 (+0000)
Subject: subtype_resurrection():  The test suite with -l properly reported the
X-Git-Tag: v2.3c1~5044
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=14cb1e1eff09fc8b93681c4c0b00a21862817159;p=python

subtype_resurrection():  The test suite with -l properly reported the
immortal object here as a leak.  Made the object mortal again at the end.
---

diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
index bbc6706444..ff5cefeae6 100644
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -3184,6 +3184,7 @@ def slices():
     vereq(a, [2,3,1])
 
 def subtype_resurrection():
+    import gc
     if verbose:
         print "Testing resurrection of new-style instance..."
 
@@ -3196,12 +3197,22 @@ def subtype_resurrection():
 
     c = C()
     c.attr = 42
-    # The only interesting thing here is whether this blows up, due to flawed
+    # The most interesting thing here is whether this blows up, due to flawed
     #  GC tracking logic in typeobject.c's call_finalizer() (a 2.2.1 bug).
     del c
-    del C.container[-1]  # resurrect it again for the heck of it
+
+    # If that didn't blow up, it's also interesting to see whether clearing
+    # the last container slot works:  that will attempt to delete c again,
+    # which will cause c to get appended back to the container again "during"
+    # the del.
+    del C.container[-1]
+    vereq(len(C.container), 1)
     vereq(C.container[-1].attr, 42)
 
+    # Make c mortal again, so that the test framework with -l doesn't report
+    # it as a leak.
+    del C.__del__
+
 def do_this_first():
     if verbose:
         print "Testing SF bug 551412 ..."