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  1. Jenkins
  2. JENKINS-57205

Null pointer exception in JGit pre-build merge

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      When attempting a pre-build merge with JGit a null pointer exception is reported. The stack trace is:

      java.lang.NullPointerException
	at hudson.plugins.git.util.GitUtils.getRevisionForSHA1(GitUtils.java:166)
	at hudson.plugins.git.extensions.impl.PreBuildMerge.decorateRevisionToBuild(PreBuildMerge.java:119)
	at hudson.plugins.git.GitSCM.determineRevisionToBuild(GitSCM.java:1058)
	at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1151)
	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep.checkout(SCMStep.java:120)
	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:90)
	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:77)
	at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)

      Refer to my jenkins-bugs test repository for the details.

      The failure is specific to the JGit implementation. It was not visible in the command line git implementation.

            brianeray Brian Ray
            markewaite Mark Waite
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              Created:
              Updated:
              Resolved: