[issue19313] reference leaks

[Nick Coghlan]

Nick Coghlan added the comment:

Before:

$ ./python -m test -R 3:3 test_ast
[1/1] test_ast
beginning 6 repetitions
123456
......
test_ast leaked [6885, 6885, 6885] references, sum=20655
test_ast leaked [4888, 4890, 4890] memory blocks, sum=14668
1 test failed:
    test_ast

After:

$ ./python -m test -R 3:3 test_ast
[1/1] test_ast
beginning 6 repetitions
123456
......
1 test OK.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19313>
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