Why does the `init` block in this case warn: `Leak...

# getting-started

[matt tighe]

Why does the init block in this case warn: Leaking 'this' in constructor of non-final class A but not in the .apply case? Is the receiver block guaranteed to run after construction of A completes somehow, or is this just a case that isn’t caught by the linter?

abstract class A(injectedB: B) {
    init {
        injectedB.observeA(this)
    }
    
    val constructedB = B().apply {
        observeA(this@A)
    }
}

class B {
    fun observeA(a: A) {}
}

[tseisel]

Probably not caught by the linter

[Milan Hruban]

well you can try to reference the a in the observe method and you will know whether you got NPE or not 🙂