text: #ifndef INCLUDE_VARGS_H_
  #define INCLUDE_VARGS_H_
  
  typedef __builtin_va_list va_list;
  
  #define va_start(ap, last)         (__builtin_va_start(ap, last))
  #define va_arg(ap, type)           (__builtin_va_arg(ap, type))
  #define va_end(ap) 
  
  #endif  // INCLUDE_VARGS_H_