Returning base class member from derived class in UnigineScript

[ExBemined]

This one caused some really nasty bug in our code:

class A {};
class B {};
class C {
    A a;
    C() { a = new A(); }
};
class D : C {
    B b;
    D() { b = new B(); }
    A getA1() { return a; }
    A getA2() { assert( a is A ); return a; }
};

Here getA1() actually returns D::b, while getA2() does return C::a. To make things worse, if you run this with NDEBUG, getA2() changes it behaviour and also returns D::b. So it seems that if you don't explicitly touch a member of your base class, a random variable from the derived class is returned instead. This one in particular is nasty as that it doesn't cause a compile error and neither happens in debugging, since the assertion prevents the bug from happening.

[futurist]

Hello, you are absolutely right. I've added this bug to our internal bug tracker

For now you can use this workaround:

class A {};
class B {};
class C {
    A a;
    C() { a = new A(); }
};
class D : C {
    B b;
    D() { b = new B(); }
    A getA1() { return C(this).a; }
};