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Android Studio 3.4.0

The field-minification is actually quite difficult to get exactly right and was recently changed. Simply, for fields on super-types, we might not be able to assign non-unique names and thus we run out of "names" from the obfuscationdictionary faster.

Could you check that some of your base-classes (classes not extending other classes except java.lang.Object) field names are actually minified?

I recently changed how indexes was assigned in a newer version and you might find more of your names are minified. Would you mind trying that version out to see if it matches closer to your expectation?

buildscript {

    repositories {
        maven {
            url "http://storage.googleapis.com/r8-releases/raw/master"
        }
    }

    dependencies {
        classpath 'com.android.tools:r8:44b0356b65ab24779a8051c8f4dd50b0186437a8'  // Must be before the Gradle Plugin for Android.
        classpath 'com.android.tools.build:gradle:X.Y.Z'     // Your current AGP version.
     }
}

You might also be able to use -overloadaggressively if not doing that already, although that can lead to verification errors.

Thanks for quick response.
It should be fixed in 44b0356b65ab24779a8051c8f4dd50b0186437a8.

r8 1.5.21-dev (44b0356b65ab24779a8051c8f4dd50b0186437a8) seems ok:
    java.math.BigInteger d -> do
    int auth -> µΗ
    byte[] EMP -> µH
    byte[] k -> µμ
    java.math.BigInteger m -> if

r8 1.4.77:
    byte[] EMP -> a
    java.math.BigInteger d -> b
    java.math.BigInteger m -> c
    int auth -> e
    byte[] k -> d

proguard:
    byte[] EMP -> do
    java.math.BigInteger d -> if
    java.math.BigInteger m -> µμ
    byte[] k -> µΗ
    int auth -> µH

(don't worry about µΗ and µH in my example, it's not the same character.)

However, r8 1.5.21-dev (44b0356b65ab24779a8051c8f4dd50b0186437a8) crash my app.

If you want me to baksmali and check the reason, please let me know.

From the output, I found the issues.

r8 1.5.21-dev (44b0356b65ab24779a8051c8f4dd50b0186437a8):
io.fabric.sdk.android.services.concurrency.AsyncTask -> CoN.coN.coN.coN.coN.CoN.coN:
io.fabric.sdk.android.services.concurrency.AsyncTask$1 -> io.fabric.sdk.android.services.concurrency.AsyncTask$1:


r8 1.4.77:
io.fabric.sdk.android.services.concurrency.AsyncTask -> CoN.coN.coN.coN.coN.CoN.AUx:
io.fabric.sdk.android.services.concurrency.AsyncTask$1 -> CoN.coN.coN.coN.coN.CoN.coN:

io.fabric.sdk.android.services.concurrency.AsyncTask -> CoN.coN.coN.coN.coN.CoN.coN:
io.fabric.sdk.android.services.concurrency.AsyncTask$1 -> io.fabric.sdk.android.services.concurrency.AsyncTask$1:
io.fabric.sdk.android.services.concurrency.AsyncTask$2 -> io.fabric.sdk.android.services.concurrency.AsyncTask$2:
io.fabric.sdk.android.services.concurrency.AsyncTask$3 -> io.fabric.sdk.android.services.concurrency.AsyncTask$3:
io.fabric.sdk.android.services.concurrency.AsyncTask$4 -> io.fabric.sdk.android.services.concurrency.AsyncTask$4:
io.fabric.sdk.android.services.concurrency.AsyncTask$AsyncTaskResult -> CoN.coN.coN.coN.coN.CoN.coN$coN:
io.fabric.sdk.android.services.concurrency.AsyncTask$InternalHandler -> CoN.coN.coN.coN.coN.CoN.coN$cON:
io.fabric.sdk.android.services.concurrency.AsyncTask$SerialExecutor -> CoN.coN.coN.coN.coN.CoN.coN$CoN:
io.fabric.sdk.android.services.concurrency.AsyncTask$SerialExecutor$1 -> io.fabric.sdk.android.services.concurrency.AsyncTask$SerialExecutor$1:
io.fabric.sdk.android.services.concurrency.AsyncTask$Status -> CoN.coN.coN.coN.coN.CoN.coN$CON:
io.fabric.sdk.android.services.concurrency.AsyncTask$WorkerRunnable -> CoN.coN.coN.coN.coN.CoN.coN$AUx:

It seems r8 1.5.21-dev (44b0356b65ab24779a8051c8f4dd50b0186437a8) don't shrink for class$[1-9]*.
Which change access policy, then throws IllegalAccessError.

This has been updated in version 1.4.94 for for the following commit:
https://r8.googlesource.com/r8/+/390954928f0db9c3b888a367f7f128ce3bbfb160

Could you try and use:
buildscript {

    repositories {
        maven {
            url "http://storage.googleapis.com/r8-releases/raw"
        }
    }

    dependencies {
        classpath 'com.android.tools:r8:1.4.94'  // Must be before the Gradle Plugin for Android.
        classpath 'com.android.tools.build:gradle:X.Y.Z'     // Your current AGP version.
     }
}

to see if it works?

I will start looking into the other issue ASAP.

Thanks. It works now.

// However, there is other issue, I will create a new.

Thank you so much for trying out the patch and thank you for creating a new issue for the other bug.

Thanks for quick response and fix.