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#17927: Keep frame from referencing cell-ified arguments.

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Guido van Rossum 2013-05-10 08:47:42 -07:00
parent 8c01ffa6ed
commit 6832c81d5d
4 changed files with 59 additions and 5 deletions
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16
Python/ceval.c
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@ -3519,12 +3519,20 @@ PyEval_EvalCodeEx(PyObject *_co, PyObject *globals, PyObject *locals,
int arg;
/* Possibly account for the cell variable being an argument. */
if (co->co_cell2arg != NULL &&
(arg = co->co_cell2arg[i]) != CO_CELL_NOT_AN_ARG)
(arg = co->co_cell2arg[i]) != CO_CELL_NOT_AN_ARG) {
c = PyCell_New(GETLOCAL(arg));
else
if (c == NULL)
goto fail;
/* Reference the cell from the argument slot, for super().
See typeobject.c. */
Py_INCREF(c);
SETLOCAL(arg, c);
}
else {
c = PyCell_New(NULL);
if (c == NULL)
goto fail;
if (c == NULL)
goto fail;
}
SETLOCAL(co->co_nlocals + i, c);
}
for (i = 0; i < PyTuple_GET_SIZE(co->co_freevars); ++i) {