void _main_sink(char * data){system(data);}void _main(){char * data;char data_buf[100]="";data=data_buf;strcpy(data, BAD_OS_COMMAND);_main_sink(data);}
void _main_sink(char * data){system(data);}static void main(){char * data;char data_buf[100]="";data=data_buf;strcpy(data, GOOD_OS_COMMAND);_main_sink(data);}