throwing Copyable versus throwing MoveOnly, C++ (vc++)

throwing Copyable versus throwing MoveOnly

//Microsoft (R) C/C++ Optimizing Compiler Version 19.00.23506 for x64

#include <exception>
#include <stdio.h>
#include <typeinfo>

struct Copyable {
    Copyable() { puts(" creating"); }
    Copyable(const Copyable&) { puts(" copying"); }
    ~Copyable() { puts(" destroying"); }
};

struct MoveOnly {
    MoveOnly() { puts(" creating"); }
    MoveOnly(MoveOnly&&) { puts(" moving"); }
    ~MoveOnly() { puts(" destroying"); }
};

using TYPE = Copyable;

std::exception_ptr ex;

int main()
{
    try {
        printf("Throwing an exception of type %s...\n", typeid(TYPE).name());
        throw TYPE();
    } catch (...) {
        puts("Found the catch block.");
        puts("Now calling current_exception...");
        ex = std::current_exception();
        try {
            puts("Now calling rethrow_exception...");
            std::rethrow_exception(ex);
        } catch (...) {
            puts("Found the next catch block.");
        }
    }
    
    puts("Now setting ex to nullptr...");
    ex = nullptr;
    puts("Now exiting main()");
}


run \| edit \| history \| help	0

λ

                                      .NET NoSQL database for rapid development