sigmentation fail при работе с pthread

int main(int argc, char** argv) {
    int result=0,Oo=0,i=0,NumbElem=-1;
    char key;
    pthread_t *thr;
    thr=new pthread_t[ListLong];
    spis=new List;
    for(i=ListLong;i>=0;i--){
        NumbElem=spis->addNewElem(1);
        result=pthread_create(thr+i, NULL,thread_func, &NumbElem);
        if(result!=0){
            printf("Error in start thread!\n");
        }
    }
    mygetch();
    spis->ShowList();
    mygetch();
    spis->~List();
    cout<<"LOL";
    return (EXIT_SUCCESS);
}

void *thread_func(void * arg){
    int i=0,ololo=*(int*)arg;
    element *ThrElem,p;
    cout<<"Thread num "<<ololo<<"\t";
    sleep(1);
    ThrElem=spis->GetElemPointer(ololo);
    cout<<"ThrElem is num="<<ThrElem->Num<<" next="<<ThrElem->next<<endl;
 
    while(ThrElem->next){
        ThrElem->next=NULL;
     
    }
}