Class contains a property with the same name but different package

[hfhbd]

Describe the bug
A class Bug is in package a and b. a.Bug contains a property of type: b.Bug.
|
-- a
--- Bug.kt
-- b
---- Bug.kt
To Reproduce

package a

import b.Bug
import kotlinx.serialization.Serializable

@Serializable
data class Bug(val id: Long = 0) {
    val d get() = Bug()
}

// ------

package b

class Bug

or github project

Expected behavior
a serializable class, valid to JSON "{"id": 0}"

Environment

• Kotlin version: 1.3.61
• Library version: 0.14
• Kotlin platforms: JVM
• Gradle version: 5.2.1
• IDE version: IntelliJ IDEA 2019.3.2
• Other relevant context: -

[hfhbd]

Workaround (for own classes):

package a

import kotlinx.serialization.Serializable

@Serializable
data class Bug(val id: Long = 0) {
    val d get() = b.Bug()
}

or

package a

import b.Bug
import kotlinx.serialization.Serializable

@Serializable
data class Bug(val id: Long = 0) {
    val d: Bug get() = Bug()
}

How about third party class, eg. custom serializer for external libraries, which use this syntax?

[sandwwraith]

I don't get the problem, could you clarify what output you get currently and what is expected? It looks like regular name clash that should be avoided by specifying package explicitly or using renaming imports

[hfhbd]

@sandwwraith

Since Kotlin 1.1, you can omit the property type if it can be inferred from the getter:
val isEmpty get() = this.size == 0 // has type Boolean
https://kotlinlang.org/docs/reference/properties.html

But with @Serialization the Kotlin Compiler is not able to infer the type of the property.
Even this "simple" example without any dependencies or other packages is not working.
You have to define the type.

@Serializable
data class Foo(val bar: String) {
    val f get() = Foo("bar")
}

[sandwwraith]

https://youtrack.jetbrains.com/issue/KT-39206 is fixed, so this problem is no longer actual

[hfhbd]

Correct link?

[sandwwraith]

Sorry, I missed correct browser tab :(

[hfhbd]

Unfortunately, with 1.7.20-RC I still get a Kotlin frontend error with this code:

@Serializable
data class Foo(val bar: String) {
    val f get() = Foo("bar")
}

untitled.zip
Sure, the workaround is easy, but the error is still interesting:

@Serializable
data class Foo(val bar: String) {
    val f: Foo get() = Foo("bar")
}

[sandwwraith]

Not reproducible on 2.0.20 / 1.7.3. The following:

@Serializable
data class Foo(val bar: String) {
    val f get() = Foo("bar")
}

fun main() {
    println(Json.encodeToString(Foo("foo")))
}

prints {"bar":"foo"}.