java.lang.instrument.IllegalClassFormatException when upgrading to gradle 8 and jacoco 0.8.8

[Ganeshwaran Gabilan]

Hi Team,

I'm getting the following error with gradle 8.1 and  jacoco version 0.8.8. 

```

java.lang.instrument.IllegalClassFormatException: Error while instrumenting java/sql/Time.
at org.jacoco.agent.rt.internal_43f5073.CoverageTransformer.transform(CoverageTransformer.java:94)
at java.instrument/java.lang.instrument.ClassFileTransformer.transform(ClassFileTransformer.java:244)
at java.instrument/sun.instrument.TransformerManager.transform(TransformerManager.java:188)
at java.instrument/sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:541)
at java.base/java.lang.ClassLoader.defineClass2(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1103)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:182)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:821)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassInModuleOrNull(BuiltinClassLoader.java:741)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:665)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:700)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:669)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:375)
at picocli.CommandLine$Interpreter.registerBuiltInConverters(CommandLine.java:10839)
at picocli.CommandLine$Interpreter.<init>(CommandLine.java:10797)
at picocli.CommandLine.<init>(CommandLine.java:222)
at picocli.CommandLine.<init>(CommandLine.java:196)

```

I just replaced the gradle `jacocoMerge` task with the `jacocoReport` task. What could be the issue?

Thanks and regards,

Gabil.

[Marc Hoffmann]

Hi Gabil,

can you please provide the full stack trace? There should be a “caused by” section.

Regards,

-marc

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[Evgeny Mandrikov]

On Friday, June 2, 2023 at 7:14:04 AM UTC+2 Marc R. Hoffmann wrote:

Hi Gabil,

can you please provide the full stack trace? There should be a “caused by” section.

Regards,

-marc

On 2. Jun 2023, at 04:13, Ganeshwaran Gabilan <gabil...@gmail.com> wrote:

Hi Team,

I'm getting the following error with gradle 8.1 and  jacoco version 0.8.8. 

```

java.lang.instrument.IllegalClassFormatException: Error while instrumenting java/sql/Time.
at org.jacoco.agent.rt.internal_43f5073.CoverageTransformer.transform(CoverageTransformer.java:94)

```

I just replaced the gradle `jacocoMerge` task with the `jacocoReport` task. What could be the issue?

Note that this is clearly not JaCoCo version 0.8.8

Because starting from version 0.8.8 messages of exceptions occurring during analysis or instrumentation include JaCoCo version - https://github.com/jacoco/jacoco/pull/1217

Moreover package org.jacoco.agent.rt.internal_43f5073 corresponds to JaCoCo version 0.8.5,

which supports class files of Java versions only up to 13, so I'm ready to bet that this exception is due to the use of the old JaCoCo version with a Java version greater than 13.

[Ganeshwaran Gabilan]

Thank you for your support. 

Yes, @Mand...@gmail.com you are right. A locally added jacoco-0.8.5 JAR has been used in my project instead of jacoco version 0.8.8. Thank you for pointing that out. 

Kind regards,

Gabil.

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