Heap Corruption Detected in diamond problem

I use virtual inheritance to solve the diamond problem. The code crashes after calling the destructor of the base class A with the "Heap corruption detected" error:

#include <cstring>
class A
{
    char* name;
public:
    A(const char* name)
    {
        int len = strlen(name) + 1;
        this->name = new char[len];
        strncpy(this->name, name, len)[len] = '\0';
    }
    virtual ~A()
    {
        delete[] this->name;
    }
};

class B : virtual public A
{
public:
    B(const char* name) : A(name) {}
    virtual ~B() {}
};
class C : virtual public A
{
public:
    C(const char* name) : A(name) {}
    virtual ~C() {}
};

class D : public B, public C
{
public:
    D(const char* name) : A(name), B(name), C(name) {}
    virtual ~D() {}
};

int main()
{
    D d("qwerty"); 
}

Any ideas?

>Solution :

Change:

strncpy(this->name, name, len)[len] = '\0';

to:

strncpy(this->name, name, len);

Your [len] is accessing one past the end of your array, and strncpy already copies the terminating '\0'.