[issue22588] memory corrupted in test_capi refleaks test
Xavier de Gaye
report at bugs.python.org
Fri Oct 10 21:07:53 CEST 2014
Xavier de Gaye added the comment:
With the attached patch (the patch does reintroduce the bug in 'test_incref_decref_API' for testing purposes), it is possible to find the failing subtest rapidly:
Get the number of subtests (35 subsets):
$ export SUBTEST_RANGE="[]"
$ ./python -m test -m test__testcapi test_capi
Then run:
$ ./python -m test -m test__testcapi -R 23:23 test_capi
after modifying, each time, the range of subtests to execute, with:
$ export SUBTEST_RANGE="range(1,18)" # tests 1-17 result: fail
$ export SUBTEST_RANGE="range(1,9)" # test 1-8 result: pass
$ export SUBTEST_RANGE="range(1,13)" # test 1-12 result: fail
$ export SUBTEST_RANGE="range(1,11)" # test 1-10 result: fail
$ export SUBTEST_RANGE="[9]" # so it must be test #9, check it now
The strong limitation with this solution is that the subTest context manager must now be enclosed in a 'try except unittest.SkipTest' clause and that the context manager is used more than 100 times in the test suite.
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<http://bugs.python.org/issue22588>
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