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Inline classes are deprecated since 1.5

Reports inline classes that are deprecated and cause compilation warnings in Kotlin 1.5 and later. See What's new in Kotlin 1.5.0


inline class Password(val s: String)

After the quick-fix is applied:

@JvmInline value class Password(val s: String)

Inspection is available for Kotlin language level starting from 1.5.

Locating this inspection


Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Kotlin | Migration


By default bundled with

IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin

Kotlin, 241.18072-IJ

Last modified: 18 June 2024