func: void bad() list < char * > dataList ; badSink ( dataList ); void badSink(list<char *> dataList) char * data = dataList . back ( ) ; badVaSink ( data , data ); static void badVaSink(char * data, ...) char dest [ 100 ] = "" ; va_list args ; vsnprintf ( dest , 100 - 1 , data , args ); printLine ( dest ); void printLine (const char * line) if ( line != NULL )  printf ( "%s\n" , line ); 