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gh-101326: Fix regression when passing None to FutureIter.throw (#101327)

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Shantanu 2023-01-25 12:01:01 -08:00 • committed by GitHub
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3 changed files with 9 additions and 1 deletions
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2
Lib/test/test_asyncio/test_futures.py
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@ -612,6 +612,8 @@ class BaseFutureTests:
Exception, Exception("elephant"), 32)
self.assertRaises(TypeError, fi.throw,
Exception("elephant"), Exception("elephant"))
# https://github.com/python/cpython/issues/101326
self.assertRaises(ValueError, fi.throw, ValueError, None, None)
self.assertRaises(TypeError, fi.throw, list)
def test_future_del_collect(self):

1
Misc/NEWS.d/next/Library/2023-01-25-18-07-20.gh-issue-101326.KL4SFv.rst Normal file
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@ -0,0 +1 @@
Fix regression when passing ``None`` as second or third argument to ``FutureIter.throw``.

7
Modules/_asynciomodule.c
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@ -1694,7 +1694,12 @@ FutureIter_throw(futureiterobject *self, PyObject *const *args, Py_ssize_t nargs
val = args[1];
}
if (tb != NULL && !PyTraceBack_Check(tb)) {
if (val == Py_None) {
val = NULL;
}
if (tb == Py_None ) {
tb = NULL;
} else if (tb != NULL && !PyTraceBack_Check(tb)) {
PyErr_SetString(PyExc_TypeError, "throw() third argument must be a traceback");
return NULL;
}