Implement PEP 393.
diff --git a/Python/symtable.c b/Python/symtable.c
index a0bedfc..3578b0c 100644
--- a/Python/symtable.c
+++ b/Python/symtable.c
@@ -1525,10 +1525,10 @@
*/
PyObject *store_name;
PyObject *name = (a->asname == NULL) ? a->name : a->asname;
- const Py_UNICODE *base = PyUnicode_AS_UNICODE(name);
- Py_UNICODE *dot = Py_UNICODE_strchr(base, '.');
- if (dot) {
- store_name = PyUnicode_FromUnicode(base, dot - base);
+ Py_ssize_t dot = PyUnicode_FindChar(name, '.', 0,
+ PyUnicode_GET_LENGTH(name), 1);
+ if (dot != -1) {
+ store_name = PyUnicode_Substring(name, 0, dot);
if (!store_name)
return 0;
}