This is fixed with:

diff --git a/Lib/test/test_pdb.py b/Lib/test/test_pdb.py
index 4f9d28afd3..7b3624fb99 100644
--- a/Lib/test/test_pdb.py
+++ b/Lib/test/test_pdb.py
@@ -1045,7 +1045,7 @@ def test_pdb_next_command_in_generator_for_loop():
     ...         print('value', i)
     ...     x = 123
 
-    >>> with PdbTestInput(['break test_gen',
+    >>> with PdbTestInput(['break test_gen', # doctest: +ELLIPSIS
     ...                    'continue',
     ...                    'next',
     ...                    'next',
@@ -1055,7 +1055,7 @@ def test_pdb_next_command_in_generator_for_loop():
     > <doctest test.test_pdb.test_pdb_next_command_in_generator_for_loop[1]>(3)test_function()
     -> for i in test_gen():
     (Pdb) break test_gen
-    Breakpoint 6 at <doctest test.test_pdb.test_pdb_next_command_in_generator_for_loop[0]>:1
+    Breakpoint ... at <doctest test.test_pdb.test_pdb_next_command_in_generator_for_loop[0]>:1
     (Pdb) continue
     > <doctest test.test_pdb.test_pdb_next_command_in_generator_for_loop[0]>(2)test_gen()
     -> yield 0

I will submit a PR shortly.