why my program can not run correctly?

why my program can not run correctly?

m_lstA.remove(*iter); <-----error!!!!


///// part code as follow:

Code:

---

class A 
{
public:
  A();
  virtual ~A();
  bool operator== (const A& rhs){
        return rhs.m_strName == m_strName && rhs.m_nNum == m_m_nNum;
  };

  CString m_strName;                        //
  int m_nNum;
};

....
       
std::list<A> m_lstA;

......

std::list<A>::iterator iter = m_lstA.begin();
for(; iter != m_lstA.end(); ++iter){
  if(iter->m_strName == strName){
    m_lstA.remove(*iter);  <----error!!!!!!!!
  }
}

---

Your code doesn't work because remove() will invalidate iter.

Code:

---

std::list<A>::iterator iter = m_lstA.begin(), r_i;
for(; iter != m_lstA.end(); ){
  if(iter->m_strName == strName){
    r_i = iter++;
    m_lstA.remove(*r_i); 
  }
  else{
      ++iter;
  }
}

---