java.lang.IncompatibleClassChangeError: Method $jacocoInit()[Z must be InterfaceMethodref constant

[Godin]

Steps to reproduce

I receive with Java 9 the follow error:

java.lang.IncompatibleClassChangeError: Method com.inet.error.ErrorCode.$jacocoInit()[Z must be InterfaceMethodref constant
    at com.inet.error.ErrorCode.getMsg(ErrorCode.java)
    at com.inet.error.BaseErrorTest.testErrorCodeHasDefaultTranslation(BaseErrorTest.java:16)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:533)
    at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.runTestClass(JUnitTestClassExecuter.java:114)
    at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.execute(JUnitTestClassExecuter.java:57)
    at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassProcessor.processTestClass(JUnitTestClassProcessor.java:66)
    at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)

The code look like:

public interface ErrorCode {
    default String getMsg( Object... params ) {
        String baseName = getClass().getName();
        baseName = baseName.substring( 0, baseName.lastIndexOf( '.' ) ) + ".LanguageResources";

        ResourceBundle bundle = LoaderUtils.getBundle( baseName, ClientLocale.getThreadLocale(), getClass() );
        String msg = name();
        try {
            msg = bundle.getString( msg );
        } catch( Exception e ) {/* ignore */
        }
        try {
            msg = java.text.MessageFormat.format( msg, params );
        } catch( Exception t ) {/*ignore*/
        }
        return msg;
    }
}

JaCoCo version: 0.7.5.201505241946
Operating system: Windows 10
Tool integration: Gradle

[Godin]

@Horcrux7 experimental support for Java 9 has been added in JaCoCo version 0.7.7.

If you are really using early access and hence unstable build of Java 9, then please provide full version, including its build number.

[Godin]

Our test suite reproduces this issue on JDK 9 EA b123. Most likely this relates to changes in b122 - https://bugs.openjdk.java.net/browse/JDK-8145148

[Horcrux7]

Sorry, the JDK version was not part of your support template. I use the version from today 9 Build 123.

[Godin]

@marchof could you please review?

[marchof]

@Godin Shouldn't we add a verification for this in ProbeArrayStrategyFactoryTest?

[Godin]

@marchof you right, added. I was too fast after saw that integration tests pass.

[Godin]

@Horcrux7 thank you for reporting about this issue

[Horcrux7]

i have test it and it works for me now. Thanks.