Why is there an extra parameter added to the lambda after dumping it? Source code: ```val foo = { a...

# compiler

[Chachako]

Why is there an extra parameter added to the lambda after dumping it?

Source code:

val foo = { a: Int, b: String -> }
val bar = { a: Int -> }

Result after `dumpKotlinLike`:

val foo: Function1<Int>
  field = local fun <anonymous>(a: Int, b: String, a: Int): KFunction1<Int> {
    return Unit
  }
  get

val bar: Function1<Int>
  field = local fun <anonymous>(a: Int, a: Int): KFunction1<Int> {
    return Unit
  }
  get

[Chachako]

Furthermore, I have a property like this: val abc = {} What is the correct way to add a parameter in the lambda? Can someone guide me 😢? Is it correct to use expression.function.addValueParameter in visitFunctionExpression?

[Tóth István Zoltán]

It's just a guess but I think it is the dispatch receiver of the anonymous function.
I rarely use dumpKotlinLike, IR dump is much more precise, it would probably answer your question.

[Chachako]

Are you referring to the dump function? Unfortunately, it also has an additional parameter in its result.

[Tóth István Zoltán]

Sorry, haven't checked slack for a few days, been on sick leave.
Anyway, yes dump .
Can you show it the result of dump? It is more informative that kotlinLike.