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bpo-43683: Handle generator entry in bytecode (GH-25138)

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* Handle check for sending None to starting generator and coroutine into bytecode.

* Document new bytecode and make it fail gracefully if mis-compiled.
This commit is contained in:
Mark Shannon 2021-04-06 11:48:59 +01:00 • committed by GitHub
parent 489c36920e
commit b37181e692
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10 changed files with 2680 additions and 2612 deletions
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24
Python/ceval.c
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@ -2639,6 +2639,30 @@ main_loop:
goto exiting;
}
case TARGET(GEN_START): {
PyObject *none = POP();
Py_DECREF(none);
if (none != Py_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();
}
case TARGET(POP_EXCEPT): {
PyObject *type, *value, *traceback;
_PyErr_StackItem *exc_info;