This commit was manufactured by cvs2svn to create tag

'Version_1_19_0'.

[SVN r8447]

errors.h

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+//  (C) Copyright David Abrahams 2000. Permission to copy, use, modify, sell and
+//  distribute this software is granted provided this copyright notice appears
+//  in all copies. This software is provided "as is" without express or implied
+//  warranty, and with no claim as to its suitability for any purpose.
+//
+//  The author gratefully acknowleges the support of Dragon Systems, Inc., in
+//  producing this work.
+
+#ifndef ERRORS_DWA052500_H_
+# define ERRORS_DWA052500_H_
+
+namespace python {
+
+struct error_already_set {};
+struct argument_error : error_already_set {};
+
+// Handles exceptions caught just before returning to Python code.
+void handle_exception();
+
+template <class T>
+T* expect_non_null(T* x)
+{
+    if (x == 0)
+        throw error_already_set();
+    return x;
+}
+
+} // namespace python
+
+#endif // ERRORS_DWA052500_H_