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Code Issues Projects Releases Packages Wiki Activity Actions 21

don't segfault on deleting __abstractmethods__ #10892

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This commit is contained in:
Benjamin Peterson 2011-01-12 15:34:01 +00:00
parent 5e8dada491
commit 477ba919c1
3 changed files with 19 additions and 3 deletions
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13
Objects/typeobject.c
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@ -340,8 +340,17 @@ type_set_abstractmethods(PyTypeObject *type, PyObject *value, void *context)
abc.ABCMeta.__new__, so this function doesn't do anything
special to update subclasses.
*/
int res = PyDict_SetItemString(type->tp_dict,
"__abstractmethods__", value);
int res;
if (value != NULL) {
res = PyDict_SetItemString(type->tp_dict, "__abstractmethods__", value);
}
else {
res = PyDict_DelItemString(type->tp_dict, "__abstractmethods__");
if (res && PyErr_ExceptionMatches(PyExc_KeyError)) {
PyErr_Format(PyExc_AttributeError, "__abstractmethods__", value);
return -1;
}
}
if (res == 0) {
PyType_Modified(type);
if (value && PyObject_IsTrue(value)) {