Index: Lib/logging/__init__.py
===================================================================
--- Lib/logging/__init__.py	(revision 53516)
+++ Lib/logging/__init__.py	(working copy)
@@ -856,7 +856,8 @@
         self.root = rootnode
         self.disable = 0
         self.emittedNoHandlerWarning = 0
-        self.loggerDict = {}
+        from weakref import WeakValueDictionary
+        self.loggerDict = WeakValueDictionary()
 
     def getLogger(self, name):
         """
Index: Lib/test/test_logging.py
===================================================================
--- Lib/test/test_logging.py	(revision 53451)
+++ Lib/test/test_logging.py	(working copy)
@@ -568,6 +568,24 @@
             logging._releaseLock()
 
 
+def test6():
+    class CounterLogger(logging.Logger):
+        counter = 0
+        def __init__(self, *args, **kwargs):
+            logging.Logger.__init__(self, *args, **kwargs)
+            CounterLogger.counter += 1
+        def __del__(self):
+            CounterLogger.counter -= 1
+    logging.setLoggerClass(CounterLogger)
+    l = logging.getLogger("testleak")
+    l.info("OK got logger")
+    try:
+        assert CounterLogger.counter == 1
+        del l
+        assert CounterLogger.counter == 0
+    finally:
+        logging.setLoggerClass(logging.Logger)
+
 #----------------------------------------------------------------------------
 # Test Harness
 #----------------------------------------------------------------------------
@@ -635,7 +653,7 @@
 
         banner("log_test0", "end")
 
-        for t in range(1,6):
+        for t in range(1,7):
             banner("log_test%d" % t, "begin")
             globals()['test%d' % t]()
             banner("log_test%d" % t, "end")