#include <stdio.h>
  #include <stdarg.h>
  
  int
  pcap_vsnprintf(char *str, size_t str_size, const char *format, va_list args)
  {
  	int ret;
  
  	ret = _vsnprintf_s(str, str_size, _TRUNCATE, format, args);
  
  	/*
  	 * XXX - _vsnprintf() and _snprintf() do *not* guarantee
  	 * that str is null-terminated, but C99's vsnprintf()
  	 * and snprintf() do, and we want to offer C99 behavior,
  	 * so forcibly null-terminate the string.
  	 */
  	str[str_size - 1] = '\0';
  	return (ret);
  }
  
  int
  pcap_snprintf(char *str, size_t str_size, const char *format, ...)
  {
  	va_list args;
  	int ret;
  
  	va_start(args, format);
  	ret = pcap_vsnprintf(str, str_size, format, args);
  	va_end(args);
  	return (ret);
  }