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[3.10] bpo-46009: Do not exhaust generator when send() method raises (GH-29986). (GH-29988)

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* [3.10] bpo-46009: Do not exhaust generator when send() method raises (GH-29986).
(cherry picked from commit 69806b9516)

Co-authored-by: Mark Shannon <mark@hotpy.org>

* Rename variable after cherry-pick.

* Add NULL check.
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Mark Shannon 2021-12-08 14:46:32 +00:00 • committed by GitHub
parent cca3004f64
commit 99c72326d2
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5 changed files with 30 additions and 21 deletions
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20
Python/ceval.c
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@ -2649,25 +2649,9 @@ main_loop:
case TARGET(GEN_START): {
PyObject *none = POP();
assert(none == Py_None);
assert(oparg < 3);
Py_DECREF(none);
if (!Py_IsNone(none)) {
if (oparg > 2) {
_PyErr_SetString(tstate, PyExc_SystemError,
"Illegal kind for GEN_START");
}
else {
static const char *gen_kind[3] = {
"generator",
"coroutine",
"async generator"
};
_PyErr_Format(tstate, PyExc_TypeError,
"can't send non-None value to a "
"just-started %s",
gen_kind[oparg]);
}
goto error;
}
DISPATCH();
}