Expression: _CrtIsValidHeapPointer(pUserData)

问题：

Debug Assertion Field!

Program F:\题目\Debug\e0902..exe
File: dbgheap.c
Line: 1044
Expression: _CrtIsValidHeapPointer(pUserData)
For information on how your program can cause an assertion failure, see
the Visual C++ documentation on asserts.

源码：

#include<iostream>
using namespace std;

class Vector
{
int size;
int *buffer;

public:
Vector(int s=100);

// Vector::Vector(Vector &t);
int& elem(int ndx);
void display();
void set();

~Vector();
};

Vector::Vector(int s)
{
buffer = new int [size=s];
for(int i=0; i<size; i++)
{
   buffer[i]=i*i;
}
}

/*

Vector::Vector(Vector &t)
{
size=t.size;
buffer = new int [t.size];
for(int i=0; i<size; i++)
{
   buffer[i]=i*i;
}
}

*/

int& Vector::elem(int ndx)
{
if(ndx<0||ndx>=size)
{
   cout<<"error in index"<<endl;
   exit(1);
}
  
return buffer[ndx];
}

void Vector::display()
{
for(int j=0; j<size; j++)
{
   cout<<buffer[j]<<endl;
}
}

void Vector::set()
{
for(int j=0; j<size; j++)
{
   buffer[j]= j+1;
}
}

Vector::~Vector()
{
delete[] buffer;
}

int main()
{
Vector a(10);
Vector b(a);
a.set();
b.display();
return 0;
}

解决：没有拷贝构造函数

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