问向量在recvfrom调用中使用时指向未初始化的字节

EN

std::vector<unsigned char> *ret = new std::vector<unsigned char>(buffSize,'0');
//Due to suggestions...
int n = recvfrom(fd_, ret, buffSize, &recvAddress, &sockSize);
//Forgot to include this in the original
ret->resize(n);
// display chars somehow just for testing
for(std::vector<unsigned char>::iterator it=ret->begin(); it<ret->end();it++)
{
    std::cout<<*it;
}
std::cout<<std::endl;
...
return ret;