1#ifndef _ERR_H 2#define _ERR_H 3 4#include <features.h> 5#include <stdarg.h> 6 7#ifdef __cplusplus 8extern "C" { 9#endif 10 11void warn(const char *, ...); 12void vwarn(const char *, va_list); 13void warnx(const char *, ...); 14void vwarnx(const char *, va_list); 15 16_Noreturn void err(int, const char *, ...); 17_Noreturn void verr(int, const char *, va_list); 18_Noreturn void errx(int, const char *, ...); 19_Noreturn void verrx(int, const char *, va_list); 20 21#ifdef __cplusplus 22} 23#endif 24 25#endif 26