[issue20766] reference leaks in pdb

[STINNER Victor]

STINNER Victor added the comment:

It's not easy to test the patch because running test_pdb fails with the following error (I also get the error if the patch is not applied):

$ ./python -m test test_pdb test_pdb
[1/2] test_pdb
[2/2] test_pdb
test test_pdb failed -- Traceback (most recent call last):
  File "/home/haypo/prog/python/default/Lib/doctest.py", line 2189, in runTest
    test, out=new.write, clear_globs=False)
AssertionError: Failed doctest test for test.test_pdb.test_next_until_return_at_return_event
  File "/home/haypo/prog/python/default/Lib/test/test_pdb.py", line 603, in test_next_until_return_at_return_event

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File "/home/haypo/prog/python/default/Lib/test/test_pdb.py", line 617, in test.test_pdb.test_next_until_return_at_return_event
Failed example:
    with PdbTestInput(['break test_function_2',
                       'continue',
                       'return',
                       'next',
                       'continue',
                       'return',
                       'until',
                       'continue',
                       'return',
                       'return',
                       'continue']):
        test_function()
Expected:
    > <doctest test.test_pdb.test_next_until_return_at_return_event[1]>(3)test_function()
    -> test_function_2()
    (Pdb) break test_function_2
    Breakpoint 1 at <doctest test.test_pdb.test_next_until_return_at_return_event[0]>:1
    (Pdb) continue
    > <doctest test.test_pdb.test_next_until_return_at_return_event[0]>(2)test_function_2()
    -> x = 1
    (Pdb) return
    --Return--
    > <doctest test.test_pdb.test_next_until_return_at_return_event[0]>(3)test_function_2()->None
    -> x = 2
    (Pdb) next
    > <doctest test.test_pdb.test_next_until_return_at_return_event[1]>(4)test_function()
    -> test_function_2()
    (Pdb) continue
    > <doctest test.test_pdb.test_next_until_return_at_return_event[0]>(2)test_function_2()
    -> x = 1
    (Pdb) return
    --Return--
    > <doctest test.test_pdb.test_next_until_return_at_return_event[0]>(3)test_function_2()->None
    -> x = 2
    (Pdb) until
    > <doctest test.test_pdb.test_next_until_return_at_return_event[1]>(5)test_function()
    -> test_function_2()
    (Pdb) continue
    > <doctest test.test_pdb.test_next_until_return_at_return_event[0]>(2)test_function_2()
    -> x = 1
    (Pdb) return
    --Return--
    > <doctest test.test_pdb.test_next_until_return_at_return_event[0]>(3)test_function_2()->None
    -> x = 2
    (Pdb) return
    > <doctest test.test_pdb.test_next_until_return_at_return_event[1]>(6)test_function()
    -> end = 1
    (Pdb) continue
Got:
    > <doctest test.test_pdb.test_next_until_return_at_return_event[1]>(3)test_function()
    -> test_function_2()
    (Pdb) break test_function_2
    Breakpoint 7 at <doctest test.test_pdb.test_next_until_return_at_return_event[0]>:1
    (Pdb) continue
    > <doctest test.test_pdb.test_next_until_return_at_return_event[0]>(2)test_function_2()
    -> x = 1
    (Pdb) return
    --Return--
    > <doctest test.test_pdb.test_next_until_return_at_return_event[0]>(3)test_function_2()->None
    -> x = 2
    (Pdb) next
    > <doctest test.test_pdb.test_next_until_return_at_return_event[1]>(4)test_function()
    -> test_function_2()
    (Pdb) continue
    > <doctest test.test_pdb.test_next_until_return_at_return_event[0]>(2)test_function_2()
    -> x = 1
    (Pdb) return
    --Return--
    > <doctest test.test_pdb.test_next_until_return_at_return_event[0]>(3)test_function_2()->None
    -> x = 2
    (Pdb) until
    > <doctest test.test_pdb.test_next_until_return_at_return_event[1]>(5)test_function()
    -> test_function_2()
    (Pdb) continue
    > <doctest test.test_pdb.test_next_until_return_at_return_event[0]>(2)test_function_2()
    -> x = 1
    (Pdb) return
    --Return--
    > <doctest test.test_pdb.test_next_until_return_at_return_event[0]>(3)test_function_2()->None
    -> x = 2
    (Pdb) return
    > <doctest test.test_pdb.test_next_until_return_at_return_event[1]>(6)test_function()
    -> end = 1
    (Pdb) continue

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20766>
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