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diff --git a/libs/cairo-1.16.0/src/cairo-error.c b/libs/cairo-1.16.0/src/cairo-error.c
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+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (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.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+#include "cairo-private.h"
+
+#include "cairo-compiler-private.h"
+#include "cairo-error-private.h"
+
+#include <assert.h>
+
+/**
+ * _cairo_error:
+ * @status: a status value indicating an error, (eg. not
+ * %CAIRO_STATUS_SUCCESS)
+ *
+ * Checks that status is an error status, but does nothing else.
+ *
+ * All assignments of an error status to any user-visible object
+ * within the cairo application should result in a call to
+ * _cairo_error().
+ *
+ * The purpose of this function is to allow the user to set a
+ * breakpoint in _cairo_error() to generate a stack trace for when the
+ * user causes cairo to detect an error.
+ *
+ * Return value: the error status.
+ **/
+cairo_status_t
+_cairo_error (cairo_status_t status)
+{
+    CAIRO_ENSURE_UNIQUE;
+    assert (_cairo_status_is_error (status));
+
+    return status;
+}
+
+COMPILE_TIME_ASSERT ((int)CAIRO_INT_STATUS_LAST_STATUS == (int)CAIRO_STATUS_LAST_STATUS);