Issue #20746: Fix test_pdb to run in refleak mode (-R). Patch by Xavier de Gaye.

Lib/test/test_pdb.py

@@ -614,6 +614,8 @@ def test_next_until_return_at_return_event():
     ...     test_function_2()
     ...     end = 1
 
+    >>> from bdb import Breakpoint
+    >>> Breakpoint.next = 1
     >>> with PdbTestInput(['break test_function_2',
     ...                    'continue',
     ...                    'return',

Misc/NEWS

@@ -832,6 +832,9 @@ Documentation
 Tests
 -----
 
+- Issue #20746: Fix test_pdb to run in refleak mode (-R).  Patch by Xavier
+  de Gaye.
+
 - Issue #22060: test_ctypes has been somewhat cleaned up and simplified; it
   now uses unittest test discovery to find its tests.