As I threatened on python-dev, add a directory which contains all known
bugs which cause the interpreter to crash. I'm sure we can find a few more. Many missing bugs deal with variations on unchecked infinite recursion (like coerce.py).
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This directory only contains tests for outstanding bugs that cause
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the interpreter to segfault. Ideally this directory should always
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be empty. Sometimes it may not be easy to fix the underlying cause.
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Each test should fail when run from the command line:
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./python Lib/test/crashers/weakref_in_del.py
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Each test should have a link to the bug report:
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# http://python.org/sf/BUG#
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Put as much info into a docstring or comments to help determine
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the cause of the failure. Particularly note if the cause is
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system or environment dependent and what the variables are.
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# http://python.org/sf/992017
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class foo:
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def __coerce__(self, other):
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return other, self
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if __name__ == '__main__':
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foo()+1 # segfault: infinite recursion in C
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import weakref
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# http://python.org/sf/1377858
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ref = None
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def test_weakref_in_del():
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class Target(object):
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def __del__(self):
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global ref
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ref = weakref.ref(self)
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w = Target()
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if __name__ == '__main__':
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test_weakref_in_del()
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from xml.parsers import expat
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# http://python.org/sf/1296433
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def test_parse_only_xml_data():
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#
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xml = "<?xml version='1.0' encoding='iso8859'?><s>%s</s>" % ('a' * 1025)
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# this one doesn't crash
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#xml = "<?xml version='1.0'?><s>%s</s>" % ('a' * 10000)
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def handler(text):
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raise Exception
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parser = expat.ParserCreate()
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parser.CharacterDataHandler = handler
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try:
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parser.Parse(xml)
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except:
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pass
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if __name__ == '__main__':
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test_parse_only_xml_data()
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# Invalid read of size 4
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# at 0x43F936: PyObject_Free (obmalloc.c:735)
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# by 0x45A7C7: unicode_dealloc (unicodeobject.c:246)
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# by 0x1299021D: PyUnknownEncodingHandler (pyexpat.c:1314)
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# by 0x12993A66: processXmlDecl (xmlparse.c:3330)
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# by 0x12999211: doProlog (xmlparse.c:3678)
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# by 0x1299C3F0: prologInitProcessor (xmlparse.c:3550)
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# by 0x12991EA3: XML_ParseBuffer (xmlparse.c:1562)
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# by 0x1298F8EC: xmlparse_Parse (pyexpat.c:895)
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# by 0x47B3A1: PyEval_EvalFrameEx (ceval.c:3565)
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# by 0x47CCAC: PyEval_EvalCodeEx (ceval.c:2739)
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# by 0x47CDE1: PyEval_EvalCode (ceval.c:490)
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# by 0x499820: PyRun_SimpleFileExFlags (pythonrun.c:1198)
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# by 0x4117F1: Py_Main (main.c:492)
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# by 0x12476D1F: __libc_start_main (in /lib/libc-2.3.5.so)
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# by 0x410DC9: (within /home/neal/build/python/svn/clean/python)
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# Address 0x12704020 is 264 bytes inside a block of size 592 free'd
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# at 0x11B1BA8A: free (vg_replace_malloc.c:235)
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# by 0x124B5F18: (within /lib/libc-2.3.5.so)
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# by 0x48DE43: find_module (import.c:1320)
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# by 0x48E997: import_submodule (import.c:2249)
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# by 0x48EC15: load_next (import.c:2083)
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# by 0x48F091: import_module_ex (import.c:1914)
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# by 0x48F385: PyImport_ImportModuleEx (import.c:1955)
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# by 0x46D070: builtin___import__ (bltinmodule.c:44)
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# by 0x4186CF: PyObject_Call (abstract.c:1777)
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# by 0x474E9B: PyEval_CallObjectWithKeywords (ceval.c:3432)
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# by 0x47928E: PyEval_EvalFrameEx (ceval.c:2038)
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# by 0x47CCAC: PyEval_EvalCodeEx (ceval.c:2739)
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# by 0x47CDE1: PyEval_EvalCode (ceval.c:490)
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# by 0x48D0F7: PyImport_ExecCodeModuleEx (import.c:635)
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# by 0x48D4F4: load_source_module (import.c:913)
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