bpo-39465: Don't access directly _Py_Identifier members

Modules/_cursesmodule.c

@@ -3814,7 +3814,7 @@ update_lines_cols(void)
         return 0;
     }
     /* PyId_LINES.object will be initialized here. */
-    if (PyDict_SetItem(ModDict, PyId_LINES.object, o)) {
+    if (PyDict_SetItem(ModDict, _PyUnicode_FromId(&PyId_LINES), o)) {
         Py_DECREF(m);
         Py_DECREF(o);
         return 0;
@@ -3830,7 +3830,7 @@ update_lines_cols(void)
         Py_DECREF(o);
         return 0;
     }
-    if (PyDict_SetItem(ModDict, PyId_COLS.object, o)) {
+    if (PyDict_SetItem(ModDict, _PyUnicode_FromId(&PyId_COLS), o)) {
         Py_DECREF(m);
         Py_DECREF(o);
         return 0;

Objects/abstract.c

@@ -2287,7 +2287,7 @@ method_output_as_list(PyObject *o, _Py_Identifier *meth_id)
             PyErr_Format(PyExc_TypeError,
                          "%.200s.%U() returned a non-iterable (type %.200s)",
                          Py_TYPE(o)->tp_name,
-                         meth_id->object,
+                         _PyUnicode_FromId(meth_id),
                          Py_TYPE(meth_output)->tp_name);
         }
         Py_DECREF(meth_output);

Objects/typeobject.c

@@ -1519,7 +1519,7 @@ lookup_method(PyObject *self, _Py_Identifier *attrid, int *unbound)
 {
     PyObject *res = lookup_maybe_method(self, attrid, unbound);
     if (res == NULL && !PyErr_Occurred()) {
-        PyErr_SetObject(PyExc_AttributeError, attrid->object);
+        PyErr_SetObject(PyExc_AttributeError, _PyUnicode_FromId(attrid));
     }
     return res;
 }
@@ -6864,12 +6864,12 @@ slot_tp_setattro(PyObject *self, PyObject *name, PyObject *value)
 }
 
 static _Py_Identifier name_op[] = {
-    {0, "__lt__", 0},
-    {0, "__le__", 0},
-    {0, "__eq__", 0},
-    {0, "__ne__", 0},
-    {0, "__gt__", 0},
-    {0, "__ge__", 0}
+    _Py_static_string_init("__lt__"),
+    _Py_static_string_init("__le__"),
+    _Py_static_string_init("__eq__"),
+    _Py_static_string_init("__ne__"),
+    _Py_static_string_init("__gt__"),
+    _Py_static_string_init("__ge__"),
 };
 
 static PyObject *

Python/ceval.c

@@ -4414,7 +4414,7 @@ special_lookup(PyThreadState *tstate, PyObject *o, _Py_Identifier *id)
     PyObject *res;
     res = _PyObject_LookupSpecial(o, id);
     if (res == NULL && !_PyErr_Occurred(tstate)) {
-        _PyErr_SetObject(tstate, PyExc_AttributeError, id->object);
+        _PyErr_SetObject(tstate, PyExc_AttributeError, _PyUnicode_FromId(id));
         return NULL;
     }
     return res;