Question

the simple code below

// g++ centro.cc -o centro

#include <iostream>
using namespace std;

int  main(int argc, char *argv[])
{
    try
    {
        cout << "Going to throw" << endl;
        throw;
    }
    catch(...)
    {
        cout << "An exception occurred" << endl;
    }
    return 0;
}

produces an abort:

Going to throw
terminate called without an active exception
Aborted (core dumped)

I don’t understand what’s wrong, can anybody point me in the right direction?

Answer 1

Your line

throw;

is the syntax for re-throwing an exception in a catch block.

You should write:

throw std::exception();