45 warning (int opt ATTRIBUTE_UNUSED, const char *format, ...)  in warning()  argument
49   va_start (ap, format);  in warning()
51   vfprintf (stderr, format, ap);  in warning()
60 error (const char *format, ...)  in error()  argument
64   va_start (ap, format);  in error()
66   vfprintf (stderr, format, ap);  in error()
77 fatal (const char *format, ...)  in fatal()  argument
81   va_start (ap, format);  in fatal()
83   vfprintf (stderr, format, ap);  in fatal()
92 internal_error (const char *format, ...)  in internal_error()  argument
96   va_start (ap, format);  in internal_error()
98   vfprintf (stderr, format, ap);  in internal_error()