Thread: _BLOCK_TYPE_IS_VALID(pHead -> nBlockUse)

Hello,
I have been struggling with a memory corruption/crash that causes the message in the subject and humbly ask for your help.
I narrowed down the code to just a few lines hopefully it will be easy to see what is that I'm doing wrong.
Here is the main program

Code:

#include "example.h"
#include <vector>
int main()
{
    std::vector<exampleClass> objs;
    exampleClass test;
    objs.push_back(test);
    return 0;
}

And here is the header that defines the classes and the implementation:

Code:

class Curve
{
private:
    double *m_x;
public:
    Curve(int n, double *x)
    {
        m_x = new double[n];
    }
    ~Curve()
    {
        delete [] m_x;
    }
};
///////////////////////////////////
class exampleClassComp
{
private:
    double val;
    Curve cv;
public:
    exampleClassComp() : cv(0,0)
    { }
friend class exampleClass;
};
//////////////////////////////
class exampleClass
{
private:
    int id;
    exampleClassComp obj;
public:
    exampleClass(void); 
};
///////////////////////////////
exampleClass::exampleClass(void)
{
    id = 0;
    obj.val = 0.0;
}

It seems that the crash occurs in the dst of the class Curve. Also, I noticed that it is called when the object "test" is pushed onto the vector.
If anyone can offer some insight it would be much appreciated!
Thanks!

Thanks for the reply.
I am assuming that the class that needs to have copy constructor and overloaded operator = is the Curve class.
I will give it a shot and report.
Thanks again.
Andrea.