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diff --git a/include/iprt/cpp/exception.h b/include/iprt/cpp/exception.h
new file mode 100644
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+++ b/include/iprt/cpp/exception.h
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+/** @file
+ * IPRT - C++ Base Exceptions.
+ */
+
+/*
+ * Copyright (C) 2006-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+#ifndef IPRT_INCLUDED_cpp_exception_h
+#define IPRT_INCLUDED_cpp_exception_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/cpp/ministring.h>
+#include <exception>
+
+/** @defgroup grp_rt_cpp_exceptions     C++ Exceptions
+ * @ingroup grp_rt_cpp
+ * @{
+ */
+
+/**
+ * Base exception class for IPRT, derived from std::exception.
+ * The XML exceptions are based on this.
+ */
+class RT_DECL_CLASS RTCError
+    : public std::exception
+{
+public:
+
+    RTCError(const char *pszMessage)
+        : m_strMsg(pszMessage)
+    {
+    }
+
+    RTCError(const RTCString &a_rstrMessage)
+        : m_strMsg(a_rstrMessage)
+    {
+    }
+
+    RTCError(const RTCError &a_rSrc)
+        : std::exception(a_rSrc),
+          m_strMsg(a_rSrc.what())
+    {
+    }
+
+    virtual ~RTCError() throw()
+    {
+    }
+
+    void operator=(const RTCError &a_rSrc)
+    {
+        m_strMsg = a_rSrc.what();
+    }
+
+    void setWhat(const char *a_pszMessage)
+    {
+        m_strMsg = a_pszMessage;
+    }
+
+    virtual const char *what() const throw()
+    {
+        return m_strMsg.c_str();
+    }
+
+private:
+    /**
+     * Hidden default constructor making sure that the extended one above is
+     * always used.
+     */
+    RTCError();
+
+    /** The exception message. */
+    RTCString m_strMsg;
+};
+
+/** @} */
+
+#endif /* !IPRT_INCLUDED_cpp_exception_h */
+