FATAL ERROR: Clover could not be initialised because of an unexpected error

Running application instrumented by Clover fails with the following error message:

[CLOVER] FATAL ERROR: Clover could not be initialised because of an 
unexpected error. (class java.lang.VerifyError:(class: 
com_atlassian_clover/Clover, method: getNullRecorder signature: 
()Lcom_atlassian_clover/CoverageRecorder Wrong return type in function)

 

What could be a reason?

2 answers

1 accepted

0 votes
Accepted answer

In Clover 4 some classes have been renamed (from com.cenqua.* to com.atlassian.*).

This java.lang.VerifyError can occur in case when you have instrumented your code using Clover 4.x, but you're using Clover 3.x JAR at runtime (and vice versa).

In case you have upgraded from Clover 3.x to Clover 4.x please ensure that all classes have been instrumented using the correct Clover version and that you're using a correct version of clover.jar at runtime.

It's good to wipe out all old class files, for instance:

 - clean your workspace (e.g. 'mvn clean', run full rebuild in Eclipse / IDEA)

 - delete *-clover.jar files from ~/.m2/repository and from your Maven repository manager (e.g. Artifactory)

 - ensure that correct clover.jar version is in Tomcat or JBoss /lib directory

 

See migration guide from Clover 3.x to 4.x:

https://confluence.atlassian.com/display/CLOVER/Clover+4.0+Release+Notes

Hi Marek,
I believe you can take a look in this bug report that might be helpful for you:

https://jira.atlassian.com/browse/CLOV-733

 

WZ

Hi William. WOW, you are extremely fast - less than 5 minutes to answer, congratulations! :-) Indeed, the bug CLOV-733 is about binary incompatibility between Clover 2.5 and 2.6. The same happens for Clover 3.x and Clover 4.x. The only difference is that in Clover 2.5 vs 2.6 there was a java.lang.NullPointerException, while in Clover 3.x vs 4.x there is a java.lang.VerifyError.

Suggest an answer

Log in or Sign up to answer
Community showcase
Posted Dec 10, 2018 in Confluence

Organizing your space just got easier - Page Tree Drag & Drop is here

Hi Community! I’m Elaine, Confluence Product Manager. You may have read my earlier post about page tree in space navigation sidebar. I'm excited to share another improvement that helps you organize ...

201 views 6 7
Join discussion

Atlassian User Groups

Connect with like-minded Atlassian users at free events near you!

Find a group

Connect with like-minded Atlassian users at free events near you!

Find my local user group

Unfortunately there are no AUG chapters near you at the moment.

Start an AUG

You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs

Groups near you