Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Compiler error: Cannot store to object array because "frame.stackItems" is null #2913

Open
nlisker opened this issue Sep 5, 2024 · 4 comments
Open

Compiler error: Cannot store to object array because "frame.stackItems" is null #2913

nlisker opened this issue Sep 5, 2024 · 4 comments
Assignees
@srikanth-sankaran
Labels
bug Something isn't working needinfo Further information is requested

Comments

@nlisker
Copy link

nlisker commented Sep 5, 2024

Using Eclipse Version: 2024-06 (4.32) Build id: I20240601-0610.
Hopefully it was fixed for 4.33.

I'm getting compilation error on one of my larger classes:
image

The error appears on the first line of the class:
image

The log shows various stack traces that change as I manipulate the code:

Java Model Exception: java.lang.NullPointerException
	at org.eclipse.jdt.internal.core.CompilationUnitProblemFinder.process(CompilationUnitProblemFinder.java:324)
	at org.eclipse.jdt.internal.core.CompilationUnitProblemFinder.process(CompilationUnitProblemFinder.java:346)
	at org.eclipse.jdt.internal.core.ReconcileWorkingCopyOperation.makeConsistent(ReconcileWorkingCopyOperation.java:186)
	at org.eclipse.jdt.internal.core.ReconcileWorkingCopyOperation.executeOperation(ReconcileWorkingCopyOperation.java:92)
	at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:740)
	at org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(JavaModelOperation.java:805)
	at org.eclipse.jdt.internal.core.CompilationUnit.reconcile(CompilationUnit.java:1311)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:132)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy$1.run(JavaReconcilingStrategy.java:94)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:91)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:158)
	at org.eclipse.jdt.internal.ui.text.CompositeReconcilingStrategy.reconcile(CompositeReconcilingStrategy.java:94)
	at org.eclipse.jdt.internal.ui.text.JavaCompositeReconcilingStrategy.reconcile(JavaCompositeReconcilingStrategy.java:107)
	at org.eclipse.jface.text.reconciler.MonoReconciler.process(MonoReconciler.java:78)
	at org.eclipse.jface.text.reconciler.AbstractReconciler$BackgroundThread.run(AbstractReconciler.java:207)
Caused by: java.lang.NullPointerException
Caused by: java.lang.NullPointerException

and

!ENTRY org.eclipse.jdt.ui 4 0 2024-09-05 04:46:16.634
!MESSAGE Error in JDT Core during reconcile
!STACK 1
Java Model Exception: java.lang.NullPointerException: Cannot store to object array because "frame.stackItems" is null
	at org.eclipse.jdt.internal.core.CompilationUnitProblemFinder.process(CompilationUnitProblemFinder.java:324)
	at org.eclipse.jdt.internal.core.CompilationUnit.buildStructure(CompilationUnit.java:186)
	at org.eclipse.jdt.internal.core.Openable.generateInfos(Openable.java:245)
	at org.eclipse.jdt.internal.core.JavaElement.openWhenClosed(JavaElement.java:585)
	at org.eclipse.jdt.internal.core.CompilationUnit.makeConsistent(CompilationUnit.java:1137)
	at org.eclipse.jdt.internal.core.ReconcileWorkingCopyOperation.makeConsistent(ReconcileWorkingCopyOperation.java:166)
	at org.eclipse.jdt.internal.core.ReconcileWorkingCopyOperation.executeOperation(ReconcileWorkingCopyOperation.java:92)
	at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:740)
	at org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(JavaModelOperation.java:805)
	at org.eclipse.jdt.internal.core.CompilationUnit.reconcile(CompilationUnit.java:1311)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:132)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy$1.run(JavaReconcilingStrategy.java:94)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:91)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:158)
	at org.eclipse.jdt.internal.ui.text.CompositeReconcilingStrategy.reconcile(CompositeReconcilingStrategy.java:94)
	at org.eclipse.jdt.internal.ui.text.JavaCompositeReconcilingStrategy.reconcile(JavaCompositeReconcilingStrategy.java:107)
	at org.eclipse.jface.text.reconciler.MonoReconciler.process(MonoReconciler.java:78)
	at org.eclipse.jface.text.reconciler.AbstractReconciler$BackgroundThread.run(AbstractReconciler.java:207)
Caused by: java.lang.NullPointerException: Cannot store to object array because "frame.stackItems" is null
	at org.eclipse.jdt.internal.compiler.ClassFile.traverse(ClassFile.java:7742)
	at org.eclipse.jdt.internal.compiler.ClassFile.generateStackMapTableAttribute(ClassFile.java:5483)
	at org.eclipse.jdt.internal.compiler.ClassFile.completeCodeAttribute(ClassFile.java:1708)
	at org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.generateCode(AbstractMethodDeclaration.java:408)
	at org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.generateCode(AbstractMethodDeclaration.java:324)
	at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.generateCode(TypeDeclaration.java:762)
	at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.generateCode(TypeDeclaration.java:832)
	at org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.generateCode(CompilationUnitDeclaration.java:412)
	at org.eclipse.jdt.internal.compiler.Compiler.resolve(Compiler.java:1074)
	at org.eclipse.jdt.internal.core.CompilationUnitProblemFinder.process(CompilationUnitProblemFinder.java:272)
	... 18 more
Caused by: java.lang.NullPointerException: Cannot store to object array because "frame.stackItems" is null
	at org.eclipse.jdt.internal.compiler.ClassFile.traverse(ClassFile.java:7742)
	at org.eclipse.jdt.internal.compiler.ClassFile.generateStackMapTableAttribute(ClassFile.java:5483)
	at org.eclipse.jdt.internal.compiler.ClassFile.completeCodeAttribute(ClassFile.java:1708)
	at org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.generateCode(AbstractMethodDeclaration.java:408)
	at org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.generateCode(AbstractMethodDeclaration.java:324)
	at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.generateCode(TypeDeclaration.java:762)
	at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.generateCode(TypeDeclaration.java:832)
	at org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.generateCode(CompilationUnitDeclaration.java:412)
	at org.eclipse.jdt.internal.compiler.Compiler.resolve(Compiler.java:1074)
	at org.eclipse.jdt.internal.core.CompilationUnitProblemFinder.process(CompilationUnitProblemFinder.java:272)
	at org.eclipse.jdt.internal.core.CompilationUnit.buildStructure(CompilationUnit.java:186)
	at org.eclipse.jdt.internal.core.Openable.generateInfos(Openable.java:245)
	at org.eclipse.jdt.internal.core.JavaElement.openWhenClosed(JavaElement.java:585)
	at org.eclipse.jdt.internal.core.CompilationUnit.makeConsistent(CompilationUnit.java:1137)
	at org.eclipse.jdt.internal.core.ReconcileWorkingCopyOperation.makeConsistent(ReconcileWorkingCopyOperation.java:166)
	at org.eclipse.jdt.internal.core.ReconcileWorkingCopyOperation.executeOperation(ReconcileWorkingCopyOperation.java:92)
	at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:740)
	at org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(JavaModelOperation.java:805)
	at org.eclipse.jdt.internal.core.CompilationUnit.reconcile(CompilationUnit.java:1311)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:132)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy$1.run(JavaReconcilingStrategy.java:94)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:91)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:158)
	at org.eclipse.jdt.internal.ui.text.CompositeReconcilingStrategy.reconcile(CompositeReconcilingStrategy.java:94)
	at org.eclipse.jdt.internal.ui.text.JavaCompositeReconcilingStrategy.reconcile(JavaCompositeReconcilingStrategy.java:107)
	at org.eclipse.jface.text.reconciler.MonoReconciler.process(MonoReconciler.java:78)
	at org.eclipse.jface.text.reconciler.AbstractReconciler$BackgroundThread.run(AbstractReconciler.java:207)
!SUBENTRY 1 org.eclipse.jdt.core 4 1005 2024-09-05 04:46:16.635
!MESSAGE Cannot store to object array because "frame.stackItems" is null
!STACK 0
java.lang.NullPointerException: Cannot store to object array because "frame.stackItems" is null
	at org.eclipse.jdt.internal.compiler.ClassFile.traverse(ClassFile.java:7742)
	at org.eclipse.jdt.internal.compiler.ClassFile.generateStackMapTableAttribute(ClassFile.java:5483)
	at org.eclipse.jdt.internal.compiler.ClassFile.completeCodeAttribute(ClassFile.java:1708)
	at org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.generateCode(AbstractMethodDeclaration.java:408)
	at org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.generateCode(AbstractMethodDeclaration.java:324)
	at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.generateCode(TypeDeclaration.java:762)
	at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.generateCode(TypeDeclaration.java:832)
	at org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.generateCode(CompilationUnitDeclaration.java:412)
	at org.eclipse.jdt.internal.compiler.Compiler.resolve(Compiler.java:1074)
	at org.eclipse.jdt.internal.core.CompilationUnitProblemFinder.process(CompilationUnitProblemFinder.java:272)
	at org.eclipse.jdt.internal.core.CompilationUnit.buildStructure(CompilationUnit.java:186)
	at org.eclipse.jdt.internal.core.Openable.generateInfos(Openable.java:245)
	at org.eclipse.jdt.internal.core.JavaElement.openWhenClosed(JavaElement.java:585)
	at org.eclipse.jdt.internal.core.CompilationUnit.makeConsistent(CompilationUnit.java:1137)
	at org.eclipse.jdt.internal.core.ReconcileWorkingCopyOperation.makeConsistent(ReconcileWorkingCopyOperation.java:166)
	at org.eclipse.jdt.internal.core.ReconcileWorkingCopyOperation.executeOperation(ReconcileWorkingCopyOperation.java:92)
	at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:740)
	at org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(JavaModelOperation.java:805)
	at org.eclipse.jdt.internal.core.CompilationUnit.reconcile(CompilationUnit.java:1311)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:132)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy$1.run(JavaReconcilingStrategy.java:94)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:91)
	at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconcile(JavaReconcilingStrategy.java:158)
	at org.eclipse.jdt.internal.ui.text.CompositeReconcilingStrategy.reconcile(CompositeReconcilingStrategy.java:94)
	at org.eclipse.jdt.internal.ui.text.JavaCompositeReconcilingStrategy.reconcile(JavaCompositeReconcilingStrategy.java:107)
	at org.eclipse.jface.text.reconciler.MonoReconciler.process(MonoReconciler.java:78)
	at org.eclipse.jface.text.reconciler.AbstractReconciler$BackgroundThread.run(AbstractReconciler.java:207)

!ENTRY org.eclipse.jdt.core.manipulation 4 2 2024-09-05 04:46:16.697
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jdt.core.manipulation".
!STACK 0
java.lang.NullPointerException: Cannot store to object array because "frame.stackItems" is null
	at org.eclipse.jdt.internal.compiler.ClassFile.traverse(ClassFile.java:7742)
	at org.eclipse.jdt.internal.compiler.ClassFile.generateStackMapTableAttribute(ClassFile.java:5483)
	at org.eclipse.jdt.internal.compiler.ClassFile.completeCodeAttribute(ClassFile.java:1708)
	at org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.generateCode(AbstractMethodDeclaration.java:408)
	at org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.generateCode(AbstractMethodDeclaration.java:324)
	at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.generateCode(TypeDeclaration.java:762)
	at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.generateCode(TypeDeclaration.java:832)
	at org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.generateCode(CompilationUnitDeclaration.java:412)
	at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve(CompilationUnitResolver.java:1332)
	at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve(CompilationUnitResolver.java:791)
	at org.eclipse.jdt.core.dom.ASTParser.internalCreateASTCached(ASTParser.java:1248)
	at org.eclipse.jdt.core.dom.ASTParser.lambda$0(ASTParser.java:1126)
	at org.eclipse.jdt.internal.core.JavaModelManager.cacheZipFiles(JavaModelManager.java:5765)
	at org.eclipse.jdt.core.dom.ASTParser.internalCreateAST(ASTParser.java:1126)
	at org.eclipse.jdt.core.dom.ASTParser.createAST(ASTParser.java:874)
	at org.eclipse.jdt.core.manipulation.CoreASTProvider$1.run(CoreASTProvider.java:294)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.jdt.core.manipulation.CoreASTProvider.createAST(CoreASTProvider.java:286)
	at org.eclipse.jdt.core.manipulation.CoreASTProvider.getAST(CoreASTProvider.java:199)
	at org.eclipse.jdt.core.manipulation.CoreASTProvider.getAST(CoreASTProvider.java:189)
	at org.eclipse.jdt.core.manipulation.SharedASTProviderCore.getAST(SharedASTProviderCore.java:138)
	at org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$PartListenerGroup.calculateASTandInform(SelectionListenerWithASTManager.java:167)
	at org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$PartListenerGroup$1.lambda$0(SelectionListenerWithASTManager.java:149)
	at org.eclipse.jdt.internal.core.JavaModelManager.cacheZipFiles(JavaModelManager.java:5765)
	at org.eclipse.jdt.internal.core.JavaModelManager.callReadOnly(JavaModelManager.java:5754)
	at org.eclipse.jdt.core.JavaCore.callReadOnly(JavaCore.java:6130)
	at org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$PartListenerGroup$1.run(SelectionListenerWithASTManager.java:149)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)

!ENTRY org.eclipse.jdt.core.manipulation 4 0 2024-09-05 04:46:16.697
!MESSAGE Error in JDT Core during AST creation
!STACK 0
java.lang.NullPointerException: Cannot store to object array because "frame.stackItems" is null
	at org.eclipse.jdt.internal.compiler.ClassFile.traverse(ClassFile.java:7742)
	at org.eclipse.jdt.internal.compiler.ClassFile.generateStackMapTableAttribute(ClassFile.java:5483)
	at org.eclipse.jdt.internal.compiler.ClassFile.completeCodeAttribute(ClassFile.java:1708)
	at org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.generateCode(AbstractMethodDeclaration.java:408)
	at org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.generateCode(AbstractMethodDeclaration.java:324)
	at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.generateCode(TypeDeclaration.java:762)
	at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.generateCode(TypeDeclaration.java:832)
	at org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.generateCode(CompilationUnitDeclaration.java:412)
	at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve(CompilationUnitResolver.java:1332)
	at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve(CompilationUnitResolver.java:791)
	at org.eclipse.jdt.core.dom.ASTParser.internalCreateASTCached(ASTParser.java:1248)
	at org.eclipse.jdt.core.dom.ASTParser.lambda$0(ASTParser.java:1126)
	at org.eclipse.jdt.internal.core.JavaModelManager.cacheZipFiles(JavaModelManager.java:5765)
	at org.eclipse.jdt.core.dom.ASTParser.internalCreateAST(ASTParser.java:1126)
	at org.eclipse.jdt.core.dom.ASTParser.createAST(ASTParser.java:874)
	at org.eclipse.jdt.core.manipulation.CoreASTProvider$1.run(CoreASTProvider.java:294)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.jdt.core.manipulation.CoreASTProvider.createAST(CoreASTProvider.java:286)
	at org.eclipse.jdt.core.manipulation.CoreASTProvider.getAST(CoreASTProvider.java:199)
	at org.eclipse.jdt.core.manipulation.CoreASTProvider.getAST(CoreASTProvider.java:189)
	at org.eclipse.jdt.core.manipulation.SharedASTProviderCore.getAST(SharedASTProviderCore.java:138)
	at org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$PartListenerGroup.calculateASTandInform(SelectionListenerWithASTManager.java:167)
	at org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$PartListenerGroup$1.lambda$0(SelectionListenerWithASTManager.java:149)
	at org.eclipse.jdt.internal.core.JavaModelManager.cacheZipFiles(JavaModelManager.java:5765)
	at org.eclipse.jdt.internal.core.JavaModelManager.callReadOnly(JavaModelManager.java:5754)
	at org.eclipse.jdt.core.JavaCore.callReadOnly(JavaCore.java:6130)
	at org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$PartListenerGroup$1.run(SelectionListenerWithASTManager.java:149)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)

Unfortunately, I couldn't find a minimal reproducer, although in my project I can reproduce it 100% of the time. The class looks something like this:

public abstract class StackFrameBug<G extends Ggg, T extends Ttt, N extends Nnn> implements Serializable {

	/**
	 * Index
	 */
	sealed interface Index {
		enum GggIndex implements Index { A, B; }
		enum TttIndex implements Index { C, D; }
		abstract non-sealed class NnnIndex implements Index {}
	}
	
	interface GenericTargetable<S extends Index, A extends Index> {}

	interface Ggg extends GenericTargetable<GggIndex, GggIndex> {}
	interface Ttt extends GenericTargetable<TttIndex, TttIndex> {}
	interface Nnn extends GenericTargetable<NnnIndex, NnnIndex> {}

	abstract G getGgg();
	abstract T getTtt(int id);
	abstract N getNnn(int id);

	@SuppressWarnings("unchecked")
	public <I extends Index> GenericTargetable<I, ?> getEntity(int id, I index) {
		return (GenericTargetable<I, ?>) switch (index) {
			case GggIndex __ -> getGgg();
			case TttIndex __ -> getTtt(id);
			case NnnIndex __ -> getNnn(id);
		};
	}
}

Editing out the getEntity method fixes the problem. Adding a default branch to the switch fixes it as well, although the switch is exhaustive.

Without a reproducer it's difficult to find the issue, but I hope that the stack traces along with the description of what causes and alleviates the problem can be enough. If the stack trace guides towards something that should be in the class, I can find it in my project's class and copy it to the reproducer attempt to see if that changes things.
@srikanth-sankaran
Copy link
Contributor

Can you try with 4.33 when it gets out (very soon) ? I would be wary of spending time investigating unless the problem is reproducible on 4.33.

@srikanth-sankaran
Copy link
Contributor

A search for java.lang.NullPointerException: Cannot store to object array because "frame.stackItems" is null in the defect data base brings up only this ticket. Notwithstanding that it would be good to know if 4.33 has the problem.

@nlisker
Copy link
Author

nlisker commented Sep 5, 2024

Yes, I intend to try on 4.33. It might take a while to update after its release because of 3rd party plugins that need to catch up.

I also searched for frame.stackItem before submitting to see if it was handled, but didn't find anything.

@srikanth-sankaran
Copy link
Contributor

Thanks @nlisker - I will also spend some time to see if I can unearth something here.

@srikanth-sankaran srikanth-sankaran self-assigned this Sep 5, 2024
@jukzi jukzi added bug Something isn't working needinfo Further information is requested labels Sep 5, 2024
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees

@srikanth-sankaran srikanth-sankaran

Labels
bug Something isn't working needinfo Further information is requested
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
3 participants
@nlisker @jukzi @srikanth-sankaran