Lint rule BuildListAdds does not detect usage of operator fun plusAssign (+=) in buildList [343347272]

Fixed

Bug

Status Update

No update yet.

Description

pa...@wewell.app

created issue #1

May 29, 2024 08:49AM

DESCRIBE THE ISSUE IN DETAIL:

STEPS TO REPRODUCE:

Create a new empty project (e.g. Empty Compose Activity)
Copy following code into MainActivity

val myList = buildList {
    this += "asd"
}

Observe false-positive lint warning, issue ID BuildListAdds. The operator fun plusAssign should be equivalent to fun add.

Note: Replacing += by add gets rid of the warning:

val myList = buildList {
    add("asd")
}

Build: AI-233.14808.21.2331.11842104, 202405150249

AI-233.14808.21.2331.11842104, JRE 17.0.10+0-17.0.10b1087.21-11572160x64 JetBrains s.r.o., OS Mac OS X(aarch64) v14.3, screens 3600.0x2338.0, 3440.0x1440.0; Retina

AS: Jellyfish | 2023.3.1 Patch 1 Kotlin plugin: 233.14808.21.2331.11842104-AS Android Gradle Plugin: 8.4.1 Gradle: 8.6 Gradle JDK: JetBrains Runtime version 17.0.10 NDK: from local.properties: (not specified), latest from SDK: (not found) CMake: from local.properties: (not specified), latest from SDK: (not found), from PATH: (not found)

Screenshot 2024-05-29 at 10.42.34.png

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Comments

ma...@google.com <ma...@google.com> #2May 30, 2024 07:27PM

Status: Won't Fix (Infeasible)

Thank you for your submission, but this tracker is used to track the Android Open Source Project and issues with its developer tools.

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ra...@google.com <ra...@google.com> May 31, 2024 01:31AM

Assigned to an...@google.com.

js...@google.com <js...@google.com> #3May 31, 2024 01:33AM

Reassigned to tn...@google.com.

It is likely fixed at https://cs.android.com/android-studio/platform/tools/base/+/9fdc5414a6912db4e7844eed87fd2b2751c6dbe0

pa...@wewell.app <pa...@wewell.app> #4Mar 10, 2025 04:50PM

Excuse me, but I'm curious when is the #comment3 getting released? I still observe the issue in AGP (8.9.0). Or is it bundled in something else?

js...@google.com <js...@google.com> #5Mar 10, 2025 04:56PM

That fix is supposed to be in AGP 8.5.0, so if you're seeing an issue, I suspect it is a K2 issue that I filed a while ago: https://youtrack.jetbrains.com/issue/KT-70309.

js...@google.com <js...@google.com> #6Mar 14, 2025 05:59PM

^ I found that the issue I filed was no longer reproducible, and traced back when it is fixed; and found https://youtrack.jetbrains.com/issue/KT-72308, whose target is 2.1.20-Beta1.

Indeed, our local reproduction is no longer failing either, and the moment we landed 2.1.20-Beta2 was around AGP 8.10.0-alpha05.

js...@google.com <js...@google.com> Mar 14, 2025 08:33PM

Marked as fixed.

an...@google.com <an...@google.com> #7Mar 20, 2025 11:24PM

Thank you for your patience while our engineering team worked to resolve this issue. A fix for this issue is now available in:

Android Studio Narwhal | 2025.1.1 Canary 2
Android Gradle Plugin 8.11.0-alpha02

We encourage you to try the latest update.

If you notice further issues or have questions, please file a new bug report.

Thank you for taking the time to submit feedback — we really appreciate it!