[Osip] It's unbelievable! Is it a bug ?

[=?GB2312?B?us7N8s/p?=]

Please see my code  below.


###########################################

	ev = eXosip_event_wait(0, 50);

	if (ev == NULL) {
		ped->et=REPORT_NO_EVENT;
		return 0;
	}

	switch (ev->type) {

	case EXOSIP_MESSAGE_NEW:
	{
		if((ev->request) != NULL && MSG_IS_REGISTER(ev->request)){
			char *uri_str;
			osip_uri_to_str(ev->request->from->url, &uri_str);
			string uri = uri_str;
			osip_free(uri_str);
			
			osip_uri_param_t *param;
			osip_contact_t *contact;
			osip_message_get_contact(ev->request, 0, &contact);
			osip_contact_param_get_byname(contact, "expires", &param);
			
Mark !  Look here ---------->    int whatever = 0;
			
			if(param && !strcmp(param->gvalue, "0")){
				
				osip_message_t *ok200;
				eXosip_message_build_answer(ev->tid, 200, &ok200);
				eXosip_message_send_answer(ev->tid, 200, ok200);
				
			}
			if(param == NULL){

				osip_authorization_t *h_auth;
				osip_message_get_authorization(ev->request, 0, &h_auth);
				if(!h_auth){
					osip_message_t *answer401;
					eXosip_message_build_answer(ev->tid, 401, &answer401);
					
					char rand_str[64];
					eXosip_generate_random(rand_str, 64);
					rand_str[64] = '\0';
					
					char www_auth_body[256];
					
					snprintf(www_auth_body, sizeof(www_auth_body),"Digest
realm=\"%s\",algorithm=md5,nonce=\"%s\",stale=false", "bupt506.com",
rand_str);
					osip_message_set_header(answer401, "WWW-Authenticate", www_auth_body);
					
					eXosip_message_send_answer(ev->tid, 401, answer401);						
						
				}else{
					if(-1 == auth_check(h_auth)){
						
						osip_message_t *answer401;
						eXosip_message_build_answer(ev->tid, 401, &answer401);
						
						char rand_str[64];
						eXosip_generate_random(rand_str, 64);
						rand_str[64] = '\0';
						
						char www_auth_body[1024];
						snprintf(www_auth_body, sizeof(www_auth_body),"Digest
realm=\"%s\",algorithm=MD5,nonce=\"%s\",stale=false", "bupt506.com",
rand_str);
						osip_message_set_header(answer401, "WWW-Authenticate", www_auth_body);
						
						eXosip_message_send_answer(ev->tid, 401, answer401);						
						
					}else if(0 == auth_check(h_auth)){
						
						osip_message_t *ok200;
						eXosip_message_build_answer(ev->tid, 200, &ok200);
						eXosip_message_send_answer(ev->tid, 200, ok200);
					}
				}
			}
		}
		if ((ev->request) != NULL && MSG_IS_MESSAGE(ev->request))
		{

		}
		
		
	}

	default: {

	} 		

	}

If I  quote the mark line, a crash happened. If not ,it will be ok.And
I'm sure the variable "whatever" will never be used, that is mean it
is useless, but it should be there. If I replace that line with
whatever, such as "  char a = 'a' ; " it is also OK.
I'm totally confused, is it a bug ???








-- 
Best Regards.