Fix by Greg Chapman from SF bug 534347: Potential AV in vgetargskeywords.
Bugfix candidate.
diff --git a/Python/getargs.c b/Python/getargs.c
index 411c695..280ffc3 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -1216,7 +1216,13 @@
int pos = 0;
while (PyDict_Next(keywords, &pos, &key, &value)) {
int match = 0;
- char *ks = PyString_AsString(key);
+ char *ks;
+ if (!PyString_Check(key)) {
+ PyErr_SetString(PyExc_TypeError,
+ "keywords must be strings");
+ return 0;
+ }
+ ks = PyString_AsString(key);
for (i = 0; i < max; i++) {
if (!strcmp(ks, kwlist[i])) {
match = 1;