#ifndef _INTERR_H_
#define _INTERR_H_
-extern void lose(char *fmt, ...);
-extern void set_lossage_handler(void fun(void));
+extern void lose(char *fmt, ...) never_returns;
+extern void enable_lossage_handler(void);
+extern void disable_lossage_handler(void);
extern void describe_internal_error(os_context_t *context);
extern lispobj debug_print(lispobj string);