Issue #29392: Prevent crash when passing invalid arguments into msvcrt module.

1 files changed, 15 insertions, 1 deletions

diff --git a/Parser/asdl_c.py b/Parser/asdl_c.py
index ac9d2b6346..725d73bad4 100755..100644
--- a/Parser/asdl_c.py
+++ b/Parser/asdl_c.py
@@ -841,6 +841,7 @@ static PyObject* ast2obj_object(void *o)
     return (PyObject*)o;
 }
 #define ast2obj_singleton ast2obj_object
+#define ast2obj_constant ast2obj_object
 #define ast2obj_identifier ast2obj_object
 #define ast2obj_string ast2obj_object
 #define ast2obj_bytes ast2obj_object
@@ -878,6 +879,19 @@ static int obj2ast_object(PyObject* obj, PyObject** out, PyArena* arena)
     return 0;
 }
 
+static int obj2ast_constant(PyObject* obj, PyObject** out, PyArena* arena)
+{
+    if (obj) {
+        if (PyArena_AddPyObject(arena, obj) < 0) {
+            *out = NULL;
+            return -1;
+        }
+        Py_INCREF(obj);
+    }
+    *out = obj;
+    return 0;
+}
+
 static int obj2ast_identifier(PyObject* obj, PyObject** out, PyArena* arena)
 {
     if (!PyUnicode_CheckExact(obj) && obj != Py_None) {
@@ -913,7 +927,7 @@ static int obj2ast_int(PyObject* obj, int* out, PyArena* arena)
         return 1;
     }
 
-    i = (int)PyLong_AsLong(obj);
+    i = _PyLong_AsInt(obj);
     if (i == -1 && PyErr_Occurred())
         return 1;
     *out = i;