Why I am getting a Heap Corruption Error?
- by vaidya.atul
I am new to C++. I am getting HEAP CORRUPTION ERROR. Any help will be highly appreciated. Below is my code
class CEntity
{
//some member variables
CEntity(string section1,string section2);
CEntity();
virtual ~CEntity();
//pure virtual function ..
virtual CEntity* create()const =0;
};
I derive CLine from CEntity as below
class CLine:public CEntity
{
// Again some variables ...
// Constructor and destructor
CLine(string section1,string section2);
CLine();
~CLine();
CLine* Create() const;
}
// CLine Implementation
CLine::CLine(string section1,string section2):CEntity(section1,section2){};
CLine::CLine();
CLine* CLine::create()const{return new CLine();}
I have another class CReader which uses CLine object and populates it in a multimap as below
class CReader
{
public:
CReader();
~CReader();
multimap<int,CEntity*>m_data_vs_entity;
};
//CReader Implementation
CReader::CReader()
{
m_data_vs_entity.clear();
};
CReader::~CReader()
{
multimap<int,CEntity*>::iterator iter;
for(iter = m_data_vs_entity.begin();iter!=m_data_vs_entity.end();iter++)
{
CEntity* current_entity = iter->second;
if(current_entity)
delete current_entity;
}
m_data_vs_entity.clear();
}
I am reading the data from a file and then populating the CLine Class.The map gets populated in a function of CReader class. Since CEntity has a virtual destructor, I hope the piece of code in CReader's destructor should work. In fact, it does work for small files but I get HEAP CORRUPTION ERROR while working with bigger files. If there is something fundamentally wrong, then, please help me find it, as I have been scratching my head for quit some time now.
Thanks in advance and awaiting reply,
Regards,
Atul
