const val with Char.code property

[tateisu]

gradlew detektRcDebug
(snip)
error: const 'val' initializer should be a constant value
    private const val cpColon = ':'.code
(snip)

Expected Behavior

this is not an error, maybe false positive.

Observed Behavior

Steps to Reproduce

Context

Your Environment

• Version of detekt used:
• Version of Gradle used (if applicable):
• Gradle scan link (add --scan option when running the gradle task):
• Operating System and version:
• Link to your project (if it's a public repository):

[cortinico]

this is not an error, maybe false positive.

Can you provide more information?
I'm unsure if this is a compilation error or a detekt report.
If it's a detekt report, which rule is being reported?
Can you also provide the code snippet?
Also can I ask you to fill in the "Your Environment" section?

[tateisu]

detekt 1.17.1
kotlin 1.5.10

Android Studio 4.2.1
Build #AI-202.7660.26.42.7351085, built on May 11, 2021
Runtime version: 11.0.8+10-b944.6842174 amd64
VM: OpenJDK 64-Bit Server VM by N/A
Windows 10 10.0
GC: G1 Young Generation, G1 Old Generation
Memory: 4096M
Cores: 24
Registry: external.system.auto.import.disabled=true
Non-Bundled Plugins: com.dubreuia, com.notime.intellijPlugin.backgroundImagePlus, org.jetbrains.kotlin, izhangzhihao.rainbow.brackets

(projectDir)>gradlew detektRcDebug

> Task :app:detektRcDebug
\(projectDir)\app\src\main\java\jp\juggler\subwaytooter\ActAccountSetting.kt:321:40: error: unresolved reference: BuildConfig
        btnPushSubscriptionNotForce.vg(BuildConfig.DEBUG)
                                       ^
\(projectDir)\app\src\main\java\jp\juggler\subwaytooter\App1.kt:220:29: error: unresolved reference: BuildConfig
            "SubwayTooter/${BuildConfig.VERSION_NAME} Android/${Build.VERSION.RELEASE}"
                            ^
\(projectDir)\app\src\main\java\jp\juggler\subwaytooter\util\EmojiDecoder.kt:31:33: error: const 'val' initializer should be a constant value
    private const val cpColon = ':'.code
                                ^
\(projectDir)\app\src\main\java\jp\juggler\subwaytooter\util\EmojiDecoder.kt:33:32: error: const 'val' initializer should be a constant value
    private const val cpZwsp = '\u200B'.code
                               ^
\(projectDir)\app\src\main\java\jp\juggler\subwaytooter\util\EmojiDecoder.kt:249:40: error: const 'val' initializer should be a constant value
    private const val codepointColon = ':'.code
                                       ^
\(projectDir)\app\src\main\java\jp\juggler\util\Benchmark.kt:3:32: error: unresolved reference: BuildConfig
import jp.juggler.subwaytooter.BuildConfig
                               ^
\(projectDir)\app\src\main\java\jp\juggler\util\Benchmark.kt:9:33: error: unresolved reference: BuildConfig
val benchmarkLimitDefault = if (BuildConfig.DEBUG) 10L else 100L
                                ^
complexity - 3d 19h 20min debt
(snip)

Overall debt: 3d 19h 30min


> Task :app:detektRcDebug FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:detektRcDebug'.
> Build failed with 276 weighted issues.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 30s
56 actionable tasks: 1 executed, 55 up-to-date

[BraisGabin]

I'm not sure and I'm far from a computer to check it. Could this code be valid in kotlin 1.5 but invalid in kotlin 1.4? I think that detekt uses under the hood the Compiler from 1.4 so that could be the issue.

[tateisu]

maybe yes, Char.code is introduced at kotlin 1.5

[BraisGabin]

Probably this issue would be fixed by using https://github.com/detekt/detekt-compiler-plugin. Another reason for us to get feature parity with that project.

[tateisu]

Is there example that apply the plugin to Android Studio project?
I can't find it and I got many error when I try.

[cortinico]

Is there example that apply the plugin to Android Studio project?
I can't find it and I got many error when I try.

Ideally this should suffice:
https://github.com/detekt/detekt-compiler-plugin/blob/36e3dec680f404b02f21a6df7f030913015154b3/build.gradle.kts#L1-L11

I'm waiting to have 1.18.0 to revamp a bit the documentation for the compiler plugin 👍

[github-actions]

This issue is stale because it has been open 90 days with no activity. Please comment or this will be closed in 7 days.

[cortinico]

As a side note: I believe this will be fixed by #4106

[github-actions]

This issue is stale because it has been open 90 days with no activity. Please comment or this will be closed in 7 days.

[cortinico]

Fixed by:

• Less noisy output for detekt with Type solving #4423