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gh-102493: fix normalization in PyErr_SetObject #102502

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Merged
Yhg1s merged 8 commits into from
Mar 7, 2023
Merged

gh-102493: fix normalization in PyErr_SetObject #102502

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077747d
add test for PyErr_SetObject
iritkatriel Mar 7, 2023
feef425
fix normalization in PyErr_SetObject
iritkatriel Mar 7, 2023
c211d86
add news
iritkatriel Mar 7, 2023
cea7ff9
rename news file
iritkatriel Mar 7, 2023
61c6615
assert not null
iritkatriel Mar 7, 2023
a9094f9
skip issubclass when not an exception
iritkatriel Mar 7, 2023
6d7bccd
whitespace
iritkatriel Mar 7, 2023
fd01812
fix refleak when is_subclass fails
iritkatriel Mar 7, 2023
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add test for PyErr_SetObject
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@iritkatriel
iritkatriel committed Mar 7, 2023
commit 077747d86858ecf548d15177b5c63290e489dda3
19 changes: 19 additions & 0 deletions Lib/test/test_capi/test_exceptions.py
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Original file line number Diff line number Diff line change
Expand Up @@ -140,6 +140,25 @@ def test_err_restore(self):
self.assertEqual(1, v.args[0])
self.assertIs(tb, v.__traceback__.tb_next)

def test_set_object(self):

# new exception as obj is not an exception
with self.assertRaises(ValueError) as e:
_testcapi.exc_set_object(ValueError, 42)
self.assertEqual(e.exception.args, (42,))

# wraps the exception because unrelated types
with self.assertRaises(ValueError) as e:
_testcapi.exc_set_object(ValueError, TypeError(1,2,3))
wrapped = e.exception.args[0]
self.assertIsInstance(wrapped, TypeError)
self.assertEqual(wrapped.args, (1, 2, 3))

# is superclass, so does not wrap
with self.assertRaises(PermissionError) as e:
_testcapi.exc_set_object(OSError, PermissionError(24))
self.assertEqual(e.exception.args, (24,))


if __name__ == "__main__":
unittest.main()
15 changes: 15 additions & 0 deletions Modules/_testcapi/exceptions.c
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Expand Up @@ -78,6 +78,20 @@ make_exception_with_doc(PyObject *self, PyObject *args, PyObject *kwargs)
return PyErr_NewExceptionWithDoc(name, doc, base, dict);
}

static PyObject *
exc_set_object(PyObject *self, PyObject *args)
{
PyObject *exc;
PyObject *obj;

if (!PyArg_ParseTuple(args, "OO:exc_set_object", &exc, &obj)) {
return NULL;
}

PyErr_SetObject(exc, obj);
return NULL;
}

static PyObject *
raise_exception(PyObject *self, PyObject *args)
{
Expand Down Expand Up @@ -247,6 +261,7 @@ static PyMethodDef test_methods[] = {
PyDoc_STR("fatal_error(message, release_gil=False): call Py_FatalError(message)")},
{"make_exception_with_doc", _PyCFunction_CAST(make_exception_with_doc),
METH_VARARGS | METH_KEYWORDS},
{"exc_set_object", exc_set_object, METH_VARARGS},
{"raise_exception", raise_exception, METH_VARARGS},
{"raise_memoryerror", raise_memoryerror, METH_NOARGS},
{"set_exc_info", test_set_exc_info, METH_VARARGS},
Expand Down