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Users have reported the following NPE during annotation processing. Looking at the code, GeneratedFileManager:530 obtains an IPackageFragment instance from CompilationUnitHelper#createPackageFragment(...). This method is documented as returning null in the event of a failure but the caller is not checking for null. We should check for and deal with this error condition. java.lang.NullPointerException at org.eclipse.jdt.apt.core.internal.generatedfile.GeneratedFileManager.saveCompilationUnit(GeneratedFileManager.java:1494) at org.eclipse.jdt.apt.core.internal.generatedfile.GeneratedFileManager.generateFileDuringBuild(GeneratedFileManager.java:542) at org.eclipse.jdt.internal.apt.pluggable.core.filer.IdeJavaSourceOutputStream.close(IdeJavaSourceOutputStream.java:67) at sun.nio.cs.StreamEncoder.implClose(StreamEncoder.java:320) at sun.nio.cs.StreamEncoder.close(StreamEncoder.java:149) at java.io.OutputStreamWriter.close(OutputStreamWriter.java:233) at java.io.BufferedWriter.close(BufferedWriter.java:266) at java.io.PrintWriter.close(PrintWriter.java:339) at com.squareup.javawriter.JavaWriter.close(JavaWriter.java:808) <snip> The original exception that caused the null pointer is here: !ENTRY org.eclipse.jdt.apt.core 2 1 2015-07-21 10:25:54.704 !MESSAGE Unable to mark generated type folder as derived: common !STACK 1 org.eclipse.core.internal.resources.ResourceException: Resource '/local_switch/.apt_generated/package com/google/gws/common' does not exist. at org.eclipse.core.internal.resources.Resource.checkExists(Resource.java:341) at org.eclipse.core.internal.resources.Resource.checkAccessible(Resource.java:215) at org.eclipse.core.internal.resources.Resource.setDerived(Resource.java:1786) at org.eclipse.jdt.apt.core.internal.generatedfile.GeneratedFileManager.generateFileDuringBuild(GeneratedFileManager.java:535) at org.eclipse.jdt.internal.apt.pluggable.core.filer.IdeJavaSourceOutputStream.close(IdeJavaSourceOutputStream.java:67) at sun.nio.cs.StreamEncoder.implClose(StreamEncoder.java:320) at sun.nio.cs.StreamEncoder.close(StreamEncoder.java:149) at java.io.OutputStreamWriter.close(OutputStreamWriter.java:233) at java.io.BufferedWriter.close(BufferedWriter.java:266) at java.io.PrintWriter.close(PrintWriter.java:339) at com.squareup.javawriter.JavaWriter.close(JavaWriter.java:808) <snip> at org.eclipse.jdt.internal.compiler.apt.dispatch.RoundDispatcher.handleProcessor(RoundDispatcher.java:139) at org.eclipse.jdt.internal.compiler.apt.dispatch.RoundDispatcher.round(RoundDispatcher.java:110) at org.eclipse.jdt.internal.compiler.apt.dispatch.BaseAnnotationProcessorManager.processAnnotations(BaseAnnotationProcessorManager.java:159) at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.processAnnotations(IdeAnnotationProcessorManager.java:134) at org.eclipse.jdt.internal.compiler.Compiler.processAnnotations(Compiler.java:818) at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:434) at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:367) at org.eclipse.jdt.internal.core.builder.IncrementalImageBuilder.compile(IncrementalImageBuilder.java:330) at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:304) at org.eclipse.jdt.internal.core.builder.IncrementalImageBuilder.build(IncrementalImageBuilder.java:135) at org.eclipse.jdt.internal.core.builder.JavaBuilder.buildDeltas(JavaBuilder.java:267) at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:195) at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:734) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:206) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:246) at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:299) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:302) at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:358) at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:381) at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143) at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54) !SUBENTRY 1 org.eclipse.core.resources 4 368 2015-07-21 10:25:54.705 !MESSAGE Resource <snip> /common' does not exist.
Does eclipse not maintain apt any more?
Any update on this issue ? I am also facing the same problem
This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet. If you have further information on the current state of the bug, please add it. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant. -- The automated Eclipse Genie.
