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Issue #6697: Check that _PyUnicode_AsString() result is not NULL in typeobject

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Type name and slots are already checked for surrogates somewhere else, but it's
better to ensure that the result is not NULL.
This commit is contained in:
Victor Stinner 2010-05-19 01:42:46 +00:00
parent 8699950b04
commit e5f99f398c
1 changed files with 12 additions and 2 deletions
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14
Objects/typeobject.c
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@ -1347,8 +1347,14 @@ consistent method resolution\norder (MRO) for bases");
i = 0;
while (PyDict_Next(set, &i, &k, &v) && (size_t)off < sizeof(buf)) {
PyObject *name = class_name(k);
off += PyOS_snprintf(buf + off, sizeof(buf) - off, " %s",
name ? _PyUnicode_AsString(name) : "?");
char *name_str;
if (name != NULL) {
name_str = _PyUnicode_AsString(name);
if (name_str == NULL)
name_str = "?"
} else
name_str = "?"
off += PyOS_snprintf(buf + off, sizeof(buf) - off, " %s", name_str);
Py_XDECREF(name);
if (--n && (size_t)(off+1) < sizeof(buf)) {
buf[off++] = ',';
@ -2220,6 +2226,10 @@ type_new(PyTypeObject *metatype, PyObject *args, PyObject *kwds)
for (i = 0; i < nslots; i++, mp++) {
mp->name = _PyUnicode_AsString(
PyTuple_GET_ITEM(slots, i));
if (mp->name == NULL) {
Py_DECREF(type);
return NULL;
}
mp->type = T_OBJECT_EX;
mp->offset = slotoffset;