gh-106145: Make `end_{lineno,col_offset}` required on `type_param` nodes (#106224)

1 files changed, 6 insertions, 12 deletions

diff --git a/Python/Python-ast.c b/Python/Python-ast.c
index 1ffb835..5db9ade 100644
--- a/Python/Python-ast.c
+++ b/Python/Python-ast.c
@@ -1902,12 +1902,6 @@ init_types(struct ast_state *state)
     if (!state->type_param_type) return 0;
     if (!add_attributes(state, state->type_param_type, type_param_attributes,
         4)) return 0;
-    if (PyObject_SetAttr(state->type_param_type, state->end_lineno, Py_None) ==
-        -1)
-        return 0;
-    if (PyObject_SetAttr(state->type_param_type, state->end_col_offset,
-        Py_None) == -1)
-        return 0;
     state->TypeVar_type = make_type(state, "TypeVar", state->type_param_type,
                                     TypeVar_fields, 2,
         "TypeVar(identifier name, expr? bound)");
@@ -12500,9 +12494,9 @@ obj2ast_type_param(struct ast_state *state, PyObject* obj, type_param_ty* out,
     if (_PyObject_LookupAttr(obj, state->end_lineno, &tmp) < 0) {
         return 1;
     }
-    if (tmp == NULL || tmp == Py_None) {
-        Py_CLEAR(tmp);
-        end_lineno = lineno;
+    if (tmp == NULL) {
+        PyErr_SetString(PyExc_TypeError, "required field \"end_lineno\" missing from type_param");
+        return 1;
     }
     else {
         int res;
@@ -12517,9 +12511,9 @@ obj2ast_type_param(struct ast_state *state, PyObject* obj, type_param_ty* out,
     if (_PyObject_LookupAttr(obj, state->end_col_offset, &tmp) < 0) {
         return 1;
     }
-    if (tmp == NULL || tmp == Py_None) {
-        Py_CLEAR(tmp);
-        end_col_offset = col_offset;
+    if (tmp == NULL) {
+        PyErr_SetString(PyExc_TypeError, "required field \"end_col_offset\" missing from type_param");
+        return 1;
     }
     else {
         int res;