Question

#include <iostream>
#include <exception>
using std::cout;
using std::endl;
class test
{
 public:
    test()
    {
        cout<<"constructor called"<<endl;
    }
    ~test()
    {
        cout<<"destructor called"<<endl;
    }
    void fun(int x)
    {
       throw x;
    }
};

int main()
{
    try
    {
        static test k;          
        k.fun(3);
    }
    catch(int k)
    {
        cout<<"exception handler"<<endl;
    }
}

When the exception is thrown, then during the stack unwinding process, I think only local objects are destroyed, not static or heap objects. If this is true, I am not sure why the class (test) destructor is called? Thanks.

Answer 1

The test destructor is called after main exits.

    catch(int k)
    {
        cout<<"exception handler"<<endl;
    }
    // Added this line
    std::cout << "Main Exiting\n";
}

Now testing

> g++ test.cpp
> ./a.out
constructor called
exception handler
Main Exiting
destructor called

Static (static storage duration objects) are destroyed in the reverse order of creation after main exits.