..
   This file is part of Logtalk <https://logtalk.org/>
   SPDX-FileCopyrightText: 1998-2026 Paulo Moura <pmoura@logtalk.org>
   SPDX-License-Identifier: Apache-2.0

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
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   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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.. rst-class:: align-right

**built-in method**

.. index:: pair: system_error/0; Built-in method
.. _methods_system_error_0:

``system_error/0``
==================

Description
-----------

::

   system_error

Throws a system error. Used when runtime execution can no longer proceed. For
example, an exception is thrown without an active catcher. This built-in method
is declared private and thus cannot be used as a message to an object. Calling
this predicate is equivalent to the following sequence of goals:

::

   ...,
   context(Context),
   throw(error(system_error, Context)).

This allows the user to generate errors in the same format used by the
runtime.

Modes and number of proofs
--------------------------

::

   system_error - error

Errors
------

| When called:
|     ``system_error``

Examples
--------

(none)

.. seealso::

   :ref:`methods_catch_3`,
   :ref:`methods_throw_1`,
   :ref:`methods_context_1`,
   :ref:`methods_instantiation_error_0`,
   :ref:`methods_uninstantiation_error_1`,
   :ref:`methods_type_error_2`,
   :ref:`methods_domain_error_2`,
   :ref:`methods_consistency_error_3`,
   :ref:`methods_existence_error_2`,
   :ref:`methods_permission_error_3`,
   :ref:`methods_representation_error_1`
   :ref:`methods_evaluation_error_1`,
   :ref:`methods_resource_error_1`,
   :ref:`methods_syntax_error_1`,
