FULL PRODUCT VERSION :
java version "1.8.0_05"
Java(TM) SE Runtime Environment (build 1.8.0_05-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.5-b02, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
6.1.7601

A DESCRIPTION OF THE PROBLEM :
After trying to run the maven-goal "package" the compiler throws this exception during the maven-processor-plugin step



REGRESSION.  Last worked in version 7u60

ADDITIONAL REGRESSION INFORMATION: 
java version "1.8.0_05"
Java(TM) SE Runtime Environment (build 1.8.0_05-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.5-b02, mixed mode)

Eclipse Luna
JavaFX-maven-project (manually assembled, not via wizard)

maven-plugins used : 
maven-processor-plugin 2.2.4 (processor : org.hibernate.jpamodelgen.JPAMetaModelEntityProcessor 4.3.4.FINAL)
build-helper-maven-plugin 1.9
maven-compiler-plugin 3.1
maven-resources-plugin 2.6
eclipselink 2.5.1



STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
create a maven project with a few JPA2 Entities and a working JavaFX-scene, include the maven-processor-plugin in your POM and run the package-goal. I dont actually know if this a javac-bug or maybe a maven-processor-plugin bug ... please have a look into it and let me know sometime

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
"package" should suceed and build the jarfile
ACTUAL -
"package" fails

ERROR MESSAGES/STACK TRACES THAT OCCUR :
java.lang.IllegalStateException: endPosTable already set
	at com.sun.tools.javac.util.DiagnosticSource.setEndPosTable(DiagnosticSource.java:136)
	at com.sun.tools.javac.util.Log.setEndPosTable(Log.java:350)
	at com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:670)
	at com.sun.tools.javac.main.JavaCompiler.parseFiles(JavaCompiler.java:953)
	at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.<init>(JavacProcessingEnvironment.java:892)
	at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.next(JavacProcessingEnvironment.java:921)
	at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1187)
	at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1173)
	at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:859)
	at com.sun.tools.javac.main.Main.compile(Main.java:523)
	at com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:129)
	at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:138)
	at org.bsc.maven.plugin.processor.AbstractAnnotationProcessorMojo.executeWithExceptionsHandled(AbstractAnnotationProcessorMojo.java:545)
	at org.bsc.maven.plugin.processor.AbstractAnnotationProcessorMojo.execute(AbstractAnnotationProcessorMojo.java:285)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:133)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
	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:108)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:76)
	at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:116)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:361)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:155)
	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:584)
	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:213)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:157)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:483)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
	at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
[ERROR] error on execute: error during compilation


REPRODUCIBILITY :
This bug can be reproduced always.