+/* @@@ Resume propagation of an FORCE_UNWIND exception, or to rethrow
+ a normal exception that was handled. */
+extern _Unwind_Reason_Code _Unwind_Resume_or_Rethrow (struct _Unwind_Exception *);
+
+/* @@@ Use unwind data to perform a stack backtrace. The trace callback
+ is called for every stack frame in the call chain, but no cleanup
+ actions are performed. */
+typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn)
+ (struct _Unwind_Context *, void *);
+
+extern _Unwind_Reason_Code _Unwind_Backtrace (_Unwind_Trace_Fn, void *);
+