error: '_localtime_not_threadsafe_' was not declared in this scope

'_localtime_not_threadsafe_' was not declared in this scope

多线程安全问题，不能直接用localtime，而要用localtime_r函数

1080 time_t timer;

1081 time(&timer);

1082

1083 struct tm *t_tm;

1084 char tmpbuf[8];

1085 //t_tm = localtime_r(&timer,t_tm);

1086 localtime_r(&timer,t_tm);

1087 //strftime(tmpbuf,128,"%F %X", newtime);

1088 sprintf(tmpbuf,"%4d%02d%02d", t_tm->tm_year, t_tm->tm_mon, t_tm->tm_mday);