@@ -0,0 +1 @@
+Avoid a crash when a module filename cannot be encoded as UTF-8.
@@ -992,6 +992,10 @@ _PyModule_GetFilenameUTF8(PyObject *mod, char *buffer, Py_ssize_t maxlen)
     }
     else {
         const char *filename = PyUnicode_AsUTF8AndSize(filenameobj, &size);
+        if (filename == NULL) {
+            Py_DECREF(filenameobj);
+            return -1;
+        }
         assert(size >= 0);
         if (size > maxlen) {
             size = -1;
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+Avoid a crash when a module filename cannot be encoded as UTF-8.`