Is there any way to deal with inheritance when usi...

# kotlin-native

[Michael Bryant]

Is there any way to deal with inheritance when using K/N as a dynamic library? I was hopeful I’d be able to cast the pointers and access different attributes of different classes, but that doesn’t appear to be the case.

A simple Kotlin setup I’m trying is

abstract class Parent(val a: Int) {}

class Child(val b: Int, a: Int) : Parent(a) {}

fun make_thing(): Parent {
    return Child(1, 2);
}

[Michael Bryant]

and then in C, doing

demo_kref_Parent parent = demo_symbols()->kotlin.root.make_thing();
demo_kref_Child* child_ptr = (demo_kref_Child*) parent.pinned;
demo_kref_Child child = *child_ptr;
int b = demo_symbols()->kotlin.root.Child.get_b(child);

[Michael Bryant]

but it’s segfaulting on the get_b call.

[svyatoslav.scherbina]

Try to create demo_kref_Child with .pinned = parent.pinned instead.

[Michael Bryant]

thanks!