[
https://issues.apache.org/jira/browse/NETBEANS-896?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16511923#comment-16511923
]
Peter Kehl commented on NETBEANS-896:
-------------------------------------
Same error (same NullPointer Exc. call stack) comes whenever I have a grave
syntax error involving generic classes, for example:
class IncorrectGenericClassSyntax implements Comparable<T extends Comparable<T>
> {}
I don't know what 'nbjavac' is, but I get the error in standard Java IDE #458
incubator build for Linux x64, running on openSUSE with openjdk 11-internal
2018-09-25 OpenJDK Runtime Environment (build 11-internal+16-suse-1.1-x8664).
> Defining generic method throws Exception on without nbjavac
> -----------------------------------------------------------
>
> Key: NETBEANS-896
> URL: https://issues.apache.org/jira/browse/NETBEANS-896
> Project: NetBeans
> Issue Type: Bug
> Components: java - Editor
> Affects Versions: 9.0
> Environment: release-302-on-20180517 without nbjavac
> Reporter: Naoki Kishida
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> Defining a generic method throws NPE.
> After inputing `<T>`, NPE is thrown.
> {code}
> class Foo {
> <T>
> }{code}
> {code}
> java.lang.NullPointerException
> at
> org.netbeans.modules.java.source.usages.SourceAnalyzerFactory$UsagesVisitor.visitErroneous(SourceAnalyzerFactory.java:752)
> at
> org.netbeans.modules.java.source.usages.SourceAnalyzerFactory$UsagesVisitor.visitErroneous(SourceAnalyzerFactory.java:274)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCErroneous.accept(JCTree.java:2927)
> at
> jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82)
> at
> org.netbeans.modules.java.source.usages.SourceAnalyzerFactory$UsagesVisitor.scan(SourceAnalyzerFactory.java:385)
> at
> org.netbeans.modules.java.source.usages.SourceAnalyzerFactory$UsagesVisitor.scan(SourceAnalyzerFactory.java:274)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:105)
> at
> org.netbeans.modules.java.source.usages.SourceAnalyzerFactory$UsagesVisitor.visitClass(SourceAnalyzerFactory.java:716)
> at
> org.netbeans.modules.java.source.usages.SourceAnalyzerFactory$UsagesVisitor.visitClass(SourceAnalyzerFactory.java:274)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:808)
> at
> jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82)
> at
> org.netbeans.modules.java.source.usages.SourceAnalyzerFactory$UsagesVisitor.scan(SourceAnalyzerFactory.java:385)
> at
> org.netbeans.modules.java.source.usages.SourceAnalyzerFactory$UsagesVisitor.scan(SourceAnalyzerFactory.java:274)
> at
> jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:105)
> at
> org.netbeans.modules.java.source.usages.SourceAnalyzerFactory$UsagesVisitor.visitCompilationUnit(SourceAnalyzerFactory.java:402)
> at
> org.netbeans.modules.java.source.usages.SourceAnalyzerFactory$UsagesVisitor.visitCompilationUnit(SourceAnalyzerFactory.java:274)
> at
> jdk.compiler/com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:591)
> at
> jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82)
> at
> org.netbeans.modules.java.source.usages.SourceAnalyzerFactory$UsagesVisitor.scan(SourceAnalyzerFactory.java:385)
> at
> org.netbeans.modules.java.source.usages.SourceAnalyzerFactory$SimpleAnalyzer.analyseUnit(SourceAnalyzerFactory.java:242)
> at
> org.netbeans.modules.java.source.usages.PersistentClassIndex$IndexPatch.lambda$updateDirty$0(PersistentClassIndex.java:575)
> at
> org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:501)
> at
> org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:586)
> at
> org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:130)
> at
> org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:114)
> at
> org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:181)
> at
> org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:178)
> at
> org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:153)
> at
> org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:335)
> at
> org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:118)
> at
> org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:67)
> at
> org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:178)
> at
> org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:81)
> at
> org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:451)
> at
> org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:422)
> at
> org.netbeans.modules.java.source.usages.PersistentClassIndex$IndexPatch.updateDirty(PersistentClassIndex.java:568)
> at
> org.netbeans.modules.java.source.usages.PersistentClassIndex$IndexPatch.getPatch(PersistentClassIndex.java:530)
> at
> org.netbeans.modules.java.source.usages.PersistentClassIndex.search(PersistentClassIndex.java:220)
> at
> org.netbeans.api.java.source.ClassIndex.searchImpl(ClassIndex.java:499)
> at
> org.netbeans.api.java.source.ClassIndex.getElements(ClassIndex.java:342)
> at
> org.netbeans.modules.java.editor.overridden.ComputeOverriders.computeUsers(ComputeOverriders.java:284)
> at
> org.netbeans.modules.java.editor.overridden.ComputeOverriders.computeUsers(ComputeOverriders.java:265)
> at
> org.netbeans.modules.java.editor.overridden.ComputeOverriders.computeUsers(ComputeOverriders.java:427)
> at
> org.netbeans.modules.java.editor.overridden.ComputeOverriders.processImpl(ComputeOverriders.java:203)
> at
> org.netbeans.modules.java.editor.overridden.ComputeOverriders.process(ComputeOverriders.java:154)
> at
> org.netbeans.modules.java.editor.overridden.ComputeAnnotations.computeAnnotations(ComputeAnnotations.java:104)
> at
> org.netbeans.modules.java.editor.overridden.ComputeAnnotations.run(ComputeAnnotations.java:85)
> at
> org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:561)
> [catch] at
> org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.run(TaskProcessor.java:786)
> at org.openide.util.lookup.Lookups.executeWith(Lookups.java:279)
> at
> org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.execute(TaskProcessor.java:702)
> at
> org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:663)
> at
> java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
> at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
> at
> org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
> at
> org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
> at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
> at
> org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)
> {code}
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