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bpo-46323: Allow alloca(0) for python callback function of ctypes (GH-31249)

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Dong-hee Na 2022-02-10 19:10:07 +09:00 committed by GitHub
parent dee020a6f5
commit db052851a7
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1 changed files with 1 additions and 5 deletions
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6
Modules/_ctypes/callbacks.c
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@ -165,11 +165,7 @@ static void _CallPythonObject(void *mem,
assert(PyTuple_Check(converters)); assert(PyTuple_Check(converters));
nargs = PyTuple_GET_SIZE(converters); nargs = PyTuple_GET_SIZE(converters);
assert(nargs <= CTYPES_MAX_ARGCOUNT); assert(nargs <= CTYPES_MAX_ARGCOUNT);
PyObject **args = NULL; PyObject **args = alloca(nargs * sizeof(PyObject *));
if (nargs > 0) {
args = alloca(nargs * sizeof(PyObject *));
}
PyObject **cnvs = PySequence_Fast_ITEMS(converters); PyObject **cnvs = PySequence_Fast_ITEMS(converters);
for (i = 0; i < nargs; i++) { for (i = 0; i < nargs; i++) {
PyObject *cnv = cnvs[i]; // borrowed ref PyObject *cnv = cnvs[i]; // borrowed ref