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Fix leak when an exception is raised during generator creation. (GH-29960)

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Mark Shannon 2021-12-07 18:05:48 +00:00 • committed by GitHub
parent d596acbd3b
commit 064e53d19a
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1 changed files with 7 additions and 20 deletions
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27
Python/ceval.c
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@ -5852,24 +5852,6 @@ initialize_locals(PyThreadState *tstate, PyFunctionObject *func,
return -1;
}
static int
initialize_coro_frame(InterpreterFrame *frame, PyThreadState *tstate,
PyFunctionObject *func, PyObject *locals,
PyObject *const *args, Py_ssize_t argcount,
PyObject *kwnames)
{
assert(is_tstate_valid(tstate));
assert(func->func_defaults == NULL || PyTuple_CheckExact(func->func_defaults));
PyCodeObject *code = (PyCodeObject *)func->func_code;
_PyFrame_InitializeSpecials(frame, func, locals, code->co_nlocalsplus);
for (int i = 0; i < code->co_nlocalsplus; i++) {
frame->localsplus[i] = NULL;
}
assert(frame->frame_obj == NULL);
return initialize_locals(tstate, func, frame->localsplus, args, argcount, kwnames);
}
/* Consumes all the references to the args */
static PyObject *
make_coro(PyThreadState *tstate, PyFunctionObject *func,
@ -5883,12 +5865,17 @@ make_coro(PyThreadState *tstate, PyFunctionObject *func,
return NULL;
}
InterpreterFrame *frame = (InterpreterFrame *)((PyGenObject *)gen)->gi_iframe;
if (initialize_coro_frame(frame, tstate, func, locals, args, argcount, kwnames)) {
PyCodeObject *code = (PyCodeObject *)func->func_code;
_PyFrame_InitializeSpecials(frame, func, locals, code->co_nlocalsplus);
for (int i = 0; i < code->co_nlocalsplus; i++) {
frame->localsplus[i] = NULL;
}
((PyGenObject *)gen)->gi_frame_valid = 1;
if (initialize_locals(tstate, func, frame->localsplus, args, argcount, kwnames)) {
Py_DECREF(gen);
return NULL;
}
frame->generator = gen;
((PyGenObject *)gen)->gi_frame_valid = 1;
return gen;
}