Hey there,
I'm still having problems publishing my clang scan-build results using the clang-scanbuildf-plugin. Seems that https://issues.jenkins-ci.org/browse/JENKINS-28130 only fixed part of the problem.

Publishing Clang scan-build results
ERROR: Build step failed with exception
java.lang.NullPointerException
at jenkins.plugins.clangscanbuild.history.ClangScanBuildBugSummary.contains(ClangScanBuildBugSummary.java:16)
at jenkins.plugins.clangscanbuild.publisher.ClangScanBuildPublisher.createBugFromClangScanBuildHtml(ClangScanBuildPublisher.java:167)
at jenkins.plugins.clangscanbuild.publisher.ClangScanBuildPublisher.perform(ClangScanBuildPublisher.java:127)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:761)
at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:721)
at hudson.model.Build$BuildExecution.post2(Build.java:183)
at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:670)
at hudson.model.Run.execute(Run.java:1743)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:89)
at hudson.model.Executor.run(Executor.java:240)
Build step 'Publish Clang Scan-Build Results' marked build as failure