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#13096: Fix segfault in CTypes POINTER handling of large values.

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Patch by Meador Inge.
This commit is contained in:
R David Murray 2014-10-12 13:54:48 -04:00
parent 4cfb5bee89
commit 817905b239
3 changed files with 19 additions and 2 deletions
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10
Modules/_ctypes/callproc.c
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@ -1672,24 +1672,30 @@ POINTER(PyObject *self, PyObject *cls)
}
if (PyUnicode_CheckExact(cls)) {
char *name = _PyUnicode_AsString(cls);
buf = alloca(strlen(name) + 3 + 1);
buf = PyMem_Malloc(strlen(name) + 3 + 1);
if (buf == NULL)
return PyErr_NoMemory();
sprintf(buf, "LP_%s", name);
result = PyObject_CallFunction((PyObject *)Py_TYPE(&PyCPointer_Type),
"s(O){}",
buf,
&PyCPointer_Type);
PyMem_Free(buf);
if (result == NULL)
return result;
key = PyLong_FromVoidPtr(result);
} else if (PyType_Check(cls)) {
typ = (PyTypeObject *)cls;
buf = alloca(strlen(typ->tp_name) + 3 + 1);
buf = PyMem_Malloc(strlen(typ->tp_name) + 3 + 1);
if (buf == NULL)
return PyErr_NoMemory();
sprintf(buf, "LP_%s", typ->tp_name);
result = PyObject_CallFunction((PyObject *)Py_TYPE(&PyCPointer_Type),
"s(O){sO}",
buf,
&PyCPointer_Type,
"_type_", cls);
PyMem_Free(buf);
if (result == NULL)
return result;
Py_INCREF(cls);