okhttp: 5.0.0-alpha.12: java.lang.IllegalStateException: Unable to load /okhttp3/internal/publicsuffix/a.gz resource from the classpath.

I have created a code sample which shows the issue.

• Android Studio Hedgehog | 2023.1.1
• OkHttp: 5.0.0-alpha.12
• Kotlin: 1.9.21
• Version of Gradle Plugin: id ‘com.android.application’ version ‘8.2.0’
• Version of Gradle: gradle-8.5-bin.zip
• OS: Windows 11 22H2

Steps to Reproduce:

Compile and run the following code in release mode (with minifyEnabled = true and shrinkResources = true).

class MainActivity : ComponentActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)

        PublicSuffixDatabase.get().getEffectiveTldPlusOne("com")
    }
}

Result:

Caused by: java.lang.IllegalStateException: Unable to load /okhttp3/internal/publicsuffix/a.gz resource from the classpath.
                                                                                                    	at w3.a.a(Unknown Source:479)
                                                                                                    	at de.telekom.testapp.MainActivity.onCreate(Unknown Source:12)
                                                                                                    	at android.app.Activity.performCreate(Activity.java:6975)
                                                                                                    	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1213)
                                                                                                    	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2770)
                                                                                                    	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892) 
                                                                                                    	at android.app.ActivityThread.-wrap11(Unknown Source:0) 
                                                                                                    	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593) 
                                                                                                    	at android.os.Handler.dispatchMessage(Handler.java:105) 
                                                                                                    	at android.os.Looper.loop(Looper.java:164) 
                                                                                                    	at android.app.ActivityThread.main(ActivityThread.java:6541) 
                                                                                                    	at java.lang.reflect.Method.invoke(Native Method) 
                                                                                                    	at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) 
                                                                                                    	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767) 

With Android Studio Hedgehog (or the new Gradle plugin) something within R8 changes. I have also observed changes with obfuscation. @yschimke: I think your comment that the code is not R8 safe was correct (see https://github.com/square/okhttp/pull/7827).