C++: If an exception is thrown, are objects that go out of scope destroyed?

Question

Normally it would be destructed upon the scope ending.. I could see issues occurring if exceptions were thrown though.

Answer 1

Yes any scope bound variables will be destroyed.

void work()
{
     Foo a;
     Foo* b = new Foo;
     // ... later

     // exception thrown

     delete b;
}

In this example a's destructor would be called when the exception was thrown as the stack unwound, but the memory pointed to by b would be leaked since it would never reach the delete call. This is one of the many reasons why RAII is so helpful.