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When I set showWeaveInfo=true - I get an error during the weaving of my test-classes, I get a NullPointerException. (I do have problems with the weaving of the concerned class - on other machines.) Via debugging have I been able to determine, that it is the weaving of a persist-call on an EntityManager. The main difference with this call to "persist" compared to the others in my test-classes, I have been able to find, is that it for some reason is handled via an EclipseSourceContext rather than a SourceContextImpl. The stack-trace: java.lang.NullPointerException at org.aspectj.ajdt.internal.core.builder.EclipseSourceContext.getSourceFile(EclipseSourceContext.java:49) at org.aspectj.ajdt.internal.core.builder.EclipseSourceContext.makeSourceLocation(EclipseSourceContext.java:57) at org.aspectj.weaver.bcel.BcelShadow.getSourceLocation(BcelShadow.java:3383) at org.aspectj.weaver.bcel.BcelWorld.reportWeavingMessage(BcelWorld.java:197) at org.aspectj.weaver.bcel.BcelWorld.reportMatch(BcelWorld.java:141) at org.aspectj.weaver.Shadow.implementMungers(Shadow.java:633) at org.aspectj.weaver.Shadow.implement(Shadow.java:547) at org.aspectj.weaver.bcel.BcelClassWeaver.implement(BcelClassWeaver.java:3187) at org.aspectj.weaver.bcel.BcelClassWeaver.weave(BcelClassWeaver.java:496) at org.aspectj.weaver.bcel.BcelClassWeaver.weave(BcelClassWeaver.java:100) at org.aspectj.weaver.bcel.BcelWeaver.weave(BcelWeaver.java:1691) at org.aspectj.weaver.bcel.BcelWeaver.weaveWithoutDump(BcelWeaver.java:1635) at org.aspectj.weaver.bcel.BcelWeaver.weaveAndNotify(BcelWeaver.java:1400) at org.aspectj.weaver.bcel.BcelWeaver.weave(BcelWeaver.java:1186) at org.aspectj.ajdt.internal.compiler.AjPipeliningCompilerAdapter.weaveQueuedEntries(AjPipeliningCompilerAdapter.java:514) at org.aspectj.ajdt.internal.compiler.AjPipeliningCompilerAdapter.queueForWeaving(AjPipeliningCompilerAdapter.java:447) at org.aspectj.ajdt.internal.compiler.AjPipeliningCompilerAdapter.afterProcessing(AjPipeliningCompilerAdapter.java:432) at org.aspectj.ajdt.internal.compiler.CompilerAdapter.ajc$after$org_aspectj_ajdt_internal_compiler_CompilerAdapter$5$6b855184(CompilerAdapter.aj:98) at org.aspectj.org.eclipse.jdt.internal.compiler.Compiler.process(Compiler.java:805) at org.aspectj.org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:468) at org.aspectj.ajdt.internal.core.builder.AjBuildManager.performCompilation(AjBuildManager.java:1028) at org.aspectj.ajdt.internal.core.builder.AjBuildManager.performBuild(AjBuildManager.java:272) at org.aspectj.ajdt.internal.core.builder.AjBuildManager.batchBuild(AjBuildManager.java:185) at org.aspectj.ajdt.ajc.AjdtCommand.doCommand(AjdtCommand.java:112) at org.aspectj.ajdt.ajc.AjdtCommand.runCommand(AjdtCommand.java:60) at org.aspectj.tools.ajc.Main.run(Main.java:371) at org.aspectj.tools.ajc.Main.runMain(Main.java:248) at org.codehaus.mojo.aspectj.AbstractAjcCompiler.execute(AbstractAjcCompiler.java:405) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59) at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156) at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196) at org.apache.maven.cli.MavenCli.main(MavenCli.java:141) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352) I have set the severity to critical, as the weave-info is critical to debugging defuncts in the weaving.