Leak when child dependency is provided to a parent dependency that has a longer lifecycle

[eygraber]

If a child dependency is provided to a parent dependency, and that parent has a longer lifecycle than the child (e.g. the parent is scoped to an Android application, and the child is scoped to an Android activity), then the child dependency can leak (in the example below, the activity context is leaked):

@Inject
class ResolverWrapper(val resolver: ContentResolver)

@Singleton
@Component abstract class ParentComponent {
  @Provides @Singleton fun providesContentResolver(
    context: Context
  ): ContentResolver = context.contentResolver
}

@Component abstract class ChildComponent(
  @Component val parent: ParentComponent,
  @get:Provides val activityContext: Context
) {
  abstract val wrapper: ResolverWrapper
}