-struct dummy_frame_context_saver;
-extern void dummy_frame_context_saver_drop
- (struct dummy_frame_context_saver *data);
-extern void dummy_frame_context_saver_cleanup (void *data_voidp);
-extern struct regcache *dummy_frame_context_saver_get_regs
- (struct dummy_frame_context_saver *saver);
-extern struct dummy_frame_context_saver *dummy_frame_context_saver_setup
- (struct frame_id dummy_id, ptid_t ptid);
+/* Throw an error indicating that the user tried to call a function
+ that has unknown return type. FUNC_NAME is the name of the
+ function to be included in the error message; may be NULL, in which
+ case the error message doesn't include a function name. */
+
+extern void error_call_unknown_return_type (const char *func_name);