Какой-то баг в GCC - C++ Linux - Ответ 242959

#include <iostream>
#include <string>
#include <fstream>
#include <dirent.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <vector>
#include <cstdlib>
#include <ctime>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <fcntl.h>
#include <openssl/md5.h>
 
long n;
class CCookie
{ private:
    std::string     LoginMark() { return "l"; }
    void Set(const std::string &Name,const std::string &Value,const long MaxAge=whileOpen)
    { if (0);
      else {}
    }
  public:
    static const long week4=3600*24*7*4;
    static const long year4=week4*52;
    static const long whileOpen=-1;
    std::string Write()
    { long period;
      if (n>week4)
      { Set(LoginMark(),"456",week4);
        for (int i=0; i<2 ; ++i)
           if (0) Set("time","789",1?year4:week4);
      }
      return "a=999";
    }
} Cookie;
 
int main(int argc, char *argv[], char *env[])
{ n=123;
  std::cout<<Cookie.Write();
  return 0;
}