Looks like an oopsie -- I ignored a warning at my peril.
diff --git a/Python/compile.c b/Python/compile.c
index 0f5fd2d..cbb6b4d 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -2972,7 +2972,8 @@
return PyObject_IsTrue(e->v.Str.s);
case Name_kind:
/* optimize away names that can't be reassigned */
- id = _PyUnicode_AsDefaultEncodedString(e->v.Name.id, NULL);
+ id = PyString_AS_STRING(
+ _PyUnicode_AsDefaultEncodedString(e->v.Name.id, NULL));
if (strcmp(id, "True") == 0) return 1;
if (strcmp(id, "False") == 0) return 0;
if (strcmp(id, "None") == 0) return 0;