[jbosstools-issues] [JBoss JIRA] (ERT-495) An NPE exceptions like CompilationUnit.buildStructure() started to appear [EBZ#513704]

An NPE exceptions like CompilationUnit.buildStructure() started to appear [EBZ#513704] -------------------------------------------------------------------------------------- Key: ERT-495 URL: https://issues.jboss.org/browse/ERT-495 Project: Eclipse Release Train Issue Type: Task Components: JSDT Reporter: Friendly Jira Robot Assignee: Victor Rubezhny Labels: General, bzira Fix For: Oxygen (4.7) M7 A series of NPE like the following have started to appear: !MESSAGE Unexpected runtime error while computing a text hover !STACK 0 java.lang.NullPointerException at org.eclipse.wst.jsdt.internal.core.CompilationUnit.buildStructure(CompilationUnit.java:172) at org.eclipse.wst.jsdt.internal.core.Openable.generateInfos(Openable.java:243) at org.eclipse.wst.jsdt.internal.core.JavaElement.openWhenClosed(JavaElement.java:538) at org.eclipse.wst.jsdt.internal.core.JavaElement.getElementInfo(JavaElement.java:282) at org.eclipse.wst.jsdt.internal.core.JavaElement.getElementInfo(JavaElement.java:268) at org.eclipse.wst.jsdt.internal.core.JavaElement.getChildren(JavaElement.java:216) at org.eclipse.wst.jsdt.internal.core.JavaElement.getChildrenOfType(JavaElement.java:230) at org.eclipse.wst.jsdt.internal.core.CompilationUnit.getTypes(CompilationUnit.java:926) at org.eclipse.wst.jsdt.internal.core.NameLookup.<init>(NameLookup.java:219) at org.eclipse.wst.jsdt.internal.core.JavaProjectElementInfo.newNameLookup(JavaProjectElementInfo.java:342) at org.eclipse.wst.jsdt.internal.core.JavaProject.newNameLookup(JavaProject.java:2391) at org.eclipse.wst.jsdt.internal.core.SearchableEnvironment.<init>(SearchableEnvironment.java:79) at org.eclipse.wst.jsdt.internal.core.SearchableEnvironment.<init>(SearchableEnvironment.java:89) at org.eclipse.wst.jsdt.internal.core.SearchableEnvironment.<init>(SearchableEnvironment.java:98) at org.eclipse.wst.jsdt.internal.core.JavaProject.newSearchableNameEnvironment(JavaProject.java:2416) at org.eclipse.wst.jsdt.internal.core.JavaElement.newSearchableNameEnvironment(JavaElement.java:872) at org.eclipse.wst.jsdt.internal.core.JavaElement.newSearchableNameEnvironment(JavaElement.java:872) at org.eclipse.wst.jsdt.internal.core.JavaElement.newSearchableNameEnvironment(JavaElement.java:872) at org.eclipse.wst.jsdt.internal.core.CompilationUnit.newSearchableNameEnvironment(CompilationUnit.java:1481) at org.eclipse.wst.jsdt.internal.core.Openable.codeSelect(Openable.java:151) at org.eclipse.wst.jsdt.internal.core.CompilationUnit.codeSelect(CompilationUnit.java:240) at org.eclipse.wst.jsdt.internal.core.CompilationUnit.codeSelect(CompilationUnit.java:234) at org.eclipse.wst.jsdt.internal.ui.text.java.hover.AbstractJavaEditorTextHover.getHoverInfo(AbstractJavaEditorTextHover.java:119) at org.eclipse.wst.jsdt.internal.ui.text.java.hover.AbstractJavaEditorTextHover.getHoverInfo2(AbstractJavaEditorTextHover.java:99) at org.eclipse.wst.jsdt.internal.ui.text.java.hover.BestMatchHover.getHoverInfo2(BestMatchHover.java:149) at org.eclipse.wst.jsdt.internal.ui.text.java.hover.JavaEditorTextHoverProxy.getHoverInfo2(JavaEditorTextHoverProxy.java:81) at org.eclipse.jface.text.TextViewerHoverManager$4.run(TextViewerHoverManager.java:166) The cause of these NPE is hidden exception in AST Converter, like: java.lang.ClassCastException: org.eclipse.wst.jsdt.core.dom.Block cannot be cast to org.eclipse.wst.jsdt.core.dom.Expression at org.eclipse.wst.jsdt.core.dom.ObjectLiteralField.internalGetSetChildProperty(ObjectLiteralField.java:135) at org.eclipse.wst.jsdt.core.dom.ASTNode.setStructuralProperty(ASTNode.java:1533) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.safeSetProperty(ClosureCompilerASTConverter.java:1690) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.transformAndSetProperty(ClosureCompilerASTConverter.java:1680) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.convertToObjectLiteralField(ClosureCompilerASTConverter.java:1109) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.processObjectLiteral(ClosureCompilerASTConverter.java:1071) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.process(ClosureCompilerASTConverter.java:247) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.transform(ClosureCompilerASTConverter.java:128) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.processCommaExpression(ClosureCompilerASTConverter.java:590) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.process(ClosureCompilerASTConverter.java:281) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.transform(ClosureCompilerASTConverter.java:128) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.transformAndSetProperty(ClosureCompilerASTConverter.java:1680) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.processParenthesizedExpression(ClosureCompilerASTConverter.java:1167) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.process(ClosureCompilerASTConverter.java:241) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.transform(ClosureCompilerASTConverter.java:128) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.transformAndSetProperty(ClosureCompilerASTConverter.java:1680) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.processExpressionStatement(ClosureCompilerASTConverter.java:718) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.process(ClosureCompilerASTConverter.java:219) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.transform(ClosureCompilerASTConverter.java:128) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.processAstRoot(ClosureCompilerASTConverter.java:493) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.process(ClosureCompilerASTConverter.java:263) at org.eclipse.wst.jsdt.core.dom.ClosureCompilerASTConverter.transform(ClosureCompilerASTConverter.java:128) at org.eclipse.wst.jsdt.internal.compiler.closure.ClosureCompiler.parse(ClosureCompiler.java:120) at org.eclipse.wst.jsdt.core.dom.ASTParser.createAST(ASTParser.java:651) at org.eclipse.wst.jsdt.internal.core.CompilationUnit.buildStructure(CompilationUnit.java:171) at org.eclipse.wst.jsdt.internal.core.Openable.generateInfos(Openable.java:243) at org.eclipse.wst.jsdt.internal.core.JavaElement.openWhenClosed(JavaElement.java:538) at org.eclipse.wst.jsdt.internal.core.JavaElement.getElementInfo(JavaElement.java:282) at org.eclipse.wst.jsdt.internal.core.JavaElement.getElementInfo(JavaElement.java:268) at org.eclipse.wst.jsdt.internal.core.JavaElement.getChildren(JavaElement.java:216) at org.eclipse.wst.jsdt.internal.core.JavaElement.getChildrenOfType(JavaElement.java:230) at org.eclipse.wst.jsdt.internal.core.CompilationUnit.getTypes(CompilationUnit.java:926) at org.eclipse.wst.jsdt.internal.core.NameLookup.<init>(NameLookup.java:219) at org.eclipse.wst.jsdt.internal.core.JavaProjectElementInfo.newNameLookup(JavaProjectElementInfo.java:342) at org.eclipse.wst.jsdt.internal.core.JavaProject.newNameLookup(JavaProject.java:2391) at org.eclipse.wst.jsdt.internal.core.SearchableEnvironment.<init>(SearchableEnvironment.java:79) at org.eclipse.wst.jsdt.internal.core.SearchableEnvironment.<init>(SearchableEnvironment.java:89) at org.eclipse.wst.jsdt.internal.core.SearchableEnvironment.<init>(SearchableEnvironment.java:98) at org.eclipse.wst.jsdt.internal.core.JavaProject.newSearchableNameEnvironment(JavaProject.java:2416) at org.eclipse.wst.jsdt.internal.core.JavaElement.newSearchableNameEnvironment(JavaElement.java:872) at org.eclipse.wst.jsdt.internal.core.JavaElement.newSearchableNameEnvironment(JavaElement.java:872) at org.eclipse.wst.jsdt.internal.core.JavaElement.newSearchableNameEnvironment(JavaElement.java:872) at org.eclipse.wst.jsdt.internal.core.CompilationUnit.newSearchableNameEnvironment(CompilationUnit.java:1481) at org.eclipse.wst.jsdt.internal.core.Openable.codeSelect(Openable.java:151) at org.eclipse.wst.jsdt.internal.core.CompilationUnit.codeSelect(CompilationUnit.java:240) at org.eclipse.wst.jsdt.internal.core.CompilationUnit.codeSelect(CompilationUnit.java:234) at org.eclipse.wst.jsdt.internal.ui.text.java.hover.AbstractJavaEditorTextHover.getHoverInfo(AbstractJavaEditorTextHover.java:119) at org.eclipse.wst.jsdt.internal.ui.text.java.hover.AbstractJavaEditorTextHover.getHoverInfo2(AbstractJavaEditorTextHover.java:99) at org.eclipse.wst.jsdt.internal.ui.text.java.hover.BestMatchHover.getHoverInfo2(BestMatchHover.java:149) at org.eclipse.wst.jsdt.internal.ui.text.java.hover.JavaEditorTextHoverProxy.getHoverInfo2(JavaEditorTextHoverProxy.java:81) at org.eclipse.jface.text.TextViewerHoverManager$4.run(TextViewerHoverManager.java:166)