verr, errx, verrx, warn, vwarn, warnx, vwarnx - formatted error messages LIBRARY Standard C library ( libc ... const char * fmt , va_list args ); void vwarnx(const char * fmt , va_…verr, errx, verrx, warn, vwarn, warnx, vwarnx - formatted error messages LIBRARY Standard C library ( libc ... const char * fmt , va_list args ); void vwarnx(const char * fmt , va_…verr, errx, verrx, warn, vwarn, warnx, vwarnx - formatted error messages LIBRARY Standard C library ( libc ... const char * fmt , va_list args ); void vwarnx(const char * fmt , va_…verr, errx, verrx, warn, vwarn, warnx, vwarnx - formatted error messages LIBRARY Standard C library ( libc ... const char * fmt , va_list args ); void vwarnx(const char * fmt , va_…verr, errx, verrx, warn, vwarn, warnx, vwarnx - formatted error messages LIBRARY Standard C library ( libc ... const char * fmt , va_list args ); void vwarnx(const char * fmt , va_…verr, errx, verrx, warn, vwarn, warnx, vwarnx - formatted error messages LIBRARY Standard C library ( libc ... const char * fmt , va_list args ); void vwarnx(const char * fmt , va_…verr, errx, verrx, warn, vwarn, warnx, vwarnx - formatted error messages LIBRARY Standard C library ( libc ... const char * fmt , va_list args ); void vwarnx(const char * fmt , va_…verr, errx, verrx, warn, vwarn, warnx, vwarnx - formatted error messages LIBRARY Standard C library ( libc ... const char * fmt , va_list args ); void vwarnx(const char * fmt , va_…