                        课程
                    
                        /后端开发
                        
                            /C++
                        
                        /C++远征之封装篇（上）

执行到析构函数怎么出错了？

#include<iostream>
#include<string>
using namespace std;
class Student
{
public:
  Student()
  {
   m_strName1=new char[20];
  }
  Student(string _name,int _age)
  {
   m_strName2=_name;
   m_intAge2=_age;
  }
  ~Student()
  {
   cout<<"已运行析构函数"<<endl;
   delete []m_strName1;
   m_strName1=NULL;
  }
  Student(const Student &kelong):m_strName3("duoli"),m_intAge3(1)
  {
   cout<<"已运行拷贝构造函数"<<endl;
  }
  void setName()
  {
   cin>>m_strName1;
  }
  void getInformation1()
  {
   cout<<m_strName1<<endl;
  }
  void getInformation2()
  {
   cout<<m_strName2<<m_intAge2<<endl;
  }
  void getInformation3()
  {
   cout<<m_strName3<<m_intAge3<<endl;
  }
private:
  char *m_strName1;
  string m_strName2;
  string m_strName3;
  int m_intAge2;
  int m_intAge3;
};
int main()
{
Student t1;
Student t2("baoyanghao",19);
Student t3(t1);

t1.setName();
t1.getInformation1();
t2.getInformation2();
t3.getInformation3();
return 0;
}