Stackoverflow error when upgrading to v3.5.2

I tried to upgrade from Mockito v3.4.6 to v3.5.2 and I’m getting a stackoverflow error (same error with v3.5.0) when running some tests (not all of them, just a few ; even in the same class : some tests pass and others don’t).

Stacktrace :

java.lang.StackOverflowError
	at java.base/java.lang.ThreadLocal.get(ThreadLocal.java:163)
	at org.mockito.internal.creation.bytebuddy.InlineByteBuddyMockMaker.lambda$new$3(InlineByteBuddyMockMaker.java:260)
	at org.mockito.internal.creation.bytebuddy.MockMethodAdvice.handleConstruction(MockMethodAdvice.java:176)
	at org.mockito.internal.creation.bytebuddy.inject.MockMethodDispatcher.handleConstruction(MockMethodDispatcher.java:53)
	at java.base/java.lang.Throwable.<init>(Throwable.java)
	at java.base/java.lang.Exception.<init>(Exception.java:66)
	at java.base/java.lang.RuntimeException.<init>(RuntimeException.java:62)
	at java.base/java.lang.ClassCastException.<init>(ClassCastException.java:58)
	at java.base/java.lang.Throwable.<init>(Throwable.java)
	at java.base/java.lang.Exception.<init>(Exception.java:66)
	at java.base/java.lang.RuntimeException.<init>(RuntimeException.java:62)
	at java.base/java.lang.ClassCastException.<init>(ClassCastException.java:58)
	at java.base/java.lang.Throwable.<init>(Throwable.java)
	at java.base/java.lang.Exception.<init>(Exception.java:66)
        ...

I didn’t succeed in reproduce the error in a small project, but I’ll spend more time to try and post the sources here when/if I have a reproducible case.

Environment :

• Mockito v3.5.2
• JUnit v5.6.2
• Java :

openjdk version “11.0.8” 2020-07-14 OpenJDK Runtime Environment (build 11.0.8+10-post-Ubuntu-0ubuntu118.04.1) OpenJDK 64-Bit Server VM (build 11.0.8+10-post-Ubuntu-0ubuntu118.04.1, mixed mode, sharing)

• Maven : v3.6.0 (tests are run by the maven-surefire plugin)

[jdussouillez]

@raphw Thank you for the fix and the time spent on this. It works great !

[jdussouillez]

You can drop the config and just use the inline artifact which defines the nock maker for you.

I used mockito-inline v3.5.6, all tests passed but 3. The 3 that fails are new ones (not the ones who failed before) and none of them use Mockito (but all of them are on enums, apparently MyEnum.values() returns an array with null values inside). But they’re executed correctly when running them manually, class by class (like I did before)

Do you know how can I generate the inline JAR from the sources ? I can’t provide you the logs I added in the source with mockito-inline because the JAR is not generated by ./gradlew -x check clean build.