fix arrays

Author: kumaraditya303

Modules/_ctypes/cfield.c

@@ -243,7 +243,7 @@ _pack_legacy_size(CFieldObject *field)
 }
 
 static int
-PyCField_set(PyObject *op, PyObject *inst, PyObject *value)
+PyCField_set_lock_held(PyObject *op, PyObject *inst, PyObject *value)
 {
     CDataObject *dst;
     char *ptr;
@@ -265,8 +265,18 @@ PyCField_set(PyObject *op, PyObject *inst, PyObject *value)
                        self->index, _pack_legacy_size(self), ptr);
 }
 
+static int
+PyCField_set(PyObject *op, PyObject *inst, PyObject *value)
+{
+    int res;
+    Py_BEGIN_CRITICAL_SECTION(inst);
+    res = PyCField_set_lock_held(op, inst, value);
+    Py_END_CRITICAL_SECTION();
+    return res;
+}
+
 static PyObject *
-PyCField_get(PyObject *op, PyObject *inst, PyObject *type)
+PyCField_get_lock_held(PyObject *op, PyObject *inst, PyObject *type)
 {
     CDataObject *src;
     CFieldObject *self = _CFieldObject_CAST(op);
@@ -285,6 +295,16 @@ PyCField_get(PyObject *op, PyObject *inst, PyObject *type)
                        src->b_ptr + self->byte_offset);
 }
 
+static PyObject *
+PyCField_get(PyObject *op, PyObject *inst, PyObject *type)
+{
+    PyObject *res;
+    Py_BEGIN_CRITICAL_SECTION(inst);
+    res = PyCField_get_lock_held(op, inst, type);
+    Py_END_CRITICAL_SECTION();
+    return res;
+}
+
 static PyObject *
 PyCField_get_legacy_size(PyObject *self, void *Py_UNUSED(closure))
 {