extern void set_prog(const char *p);
extern void vmoan(const char *fmt, va_list ap);
+extern void vmoan_syserr(int err, const char *fmt, va_list ap);
extern PRINTF_LIKE(1, 2) void moan(const char *fmt, ...);
+extern PRINTF_LIKE(2, 3) void moan_syserr(int err, const char *fmt, ...);
extern PRINTF_LIKE(1, 2) NORETURN void bail(const char *fmt, ...);
extern PRINTF_LIKE(2, 3) NORETURN
void bail_syserr(int err, const char *fmt, ...);