Bug 9271

Summary:

NPE inspecting "null" in the expressions view

Product:

[Eclipse Project] JDT

Reporter:

Darin Swanson <Darin_Swanson>

Component:

Core

Assignee:

Olivier Thomann <Olivier_Thomann>

Status:

RESOLVED FIXED

QA Contact:

Severity:

normal

Priority:

Version:

2.0

Target Milestone:

2.0 M4

Hardware:

OS:

All

Whiteboard:

Attachments:

Description	Flags
The dialog I got when I did Ctrl + Q	none
The right dialog	none

Description Darin Swanson

2002-02-07 15:48:32 EST

20020205++

Type "null" into the expressions view details pane.
Select and hit Ctrl-Q

java.lang.NullPointerException
	at org.eclipse.jdt.internal.compiler.lookup.Scope.getType
(Scope.java:789)
	at 
org.eclipse.jdt.internal.eval.CodeSnippetCodeStream.generateObjectWrapperForType
(CodeSnippetCodeStream.java:216)
	at 
org.eclipse.jdt.internal.eval.CodeSnippetReturnStatement.generateStoreSaveValueI
fNecessary(CodeSnippetReturnStatement.java:66)
	at org.eclipse.jdt.internal.compiler.ast.ReturnStatement.generateCode
(ReturnStatement.java:140)
	at org.eclipse.jdt.internal.compiler.ast.Block.generateCode
(Block.java:60)
	at org.eclipse.jdt.internal.compiler.ast.TryStatement.generateCode
(TryStatement.java:196)
	at 
org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.generateCode
(AbstractMethodDeclaration.java:199)
	at 
org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration.generateCode
(AbstractMethodDeclaration.java:148)
	at org.eclipse.jdt.internal.eval.CodeSnippetTypeDeclaration.generateCode
(CodeSnippetTypeDeclaration.java:52)
	at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.generateCode
(TypeDeclaration.java:633)
	at 
org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.generateCode
(CompilationUnitDeclaration.java:129)
	at org.eclipse.jdt.internal.compiler.Compiler.process(Compiler.java:530)
	at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:332)
	at org.eclipse.jdt.internal.eval.Evaluator.getClasses
(Evaluator.java:113)
	at org.eclipse.jdt.internal.eval.EvaluationContext.evaluate
(EvaluationContext.java:213)
	at 
org.eclipse.jdt.internal.core.eval.EvaluationContextWrapper.evaluateCodeSnippet
(EvaluationContextWrapper.java:169)
	at org.eclipse.jdt.internal.debug.eval.LocalEvaluationEngine$2.run
(LocalEvaluationEngine.java:486)
	at java.lang.Thread.run(Thread.java:484)

Comment 1 Darin Wright

2002-02-28 13:20:07 EST

Moving to JCORE

Comment 2 Olivier Thomann

2002-03-19 13:09:57 EST

I cannot reproduce. Each time I try to Ctrl + Q, I got a dialog saying "Cannot perform nestes 
evaluation".
Please tell me how to reproduce it. I am using 0314.

Comment 3 Olivier Thomann

2002-03-19 13:11:04 EST

Created attachment 490 [details]
The dialog I got when I did Ctrl + Q

Comment 4 Olivier Thomann

2002-03-19 13:13:55 EST

Created attachment 491 [details]
The right dialog

Comment 5 Olivier Thomann

2002-03-19 13:21:42 EST

Ok, this is fine. I could reproduce it in a self-hosting workspace. It should be quite simple to fix.

Comment 6 Olivier Thomann

2002-03-19 13:48:51 EST

I guess we expect null to be returned.
The bug was due to the fact that null is considered as a base 
type. I am working on a fix.

Comment 7 Darin Swanson

2002-03-19 15:26:23 EST

I would expect null to be returned...the user kindof treats null like a 
primitive.  If I display "1" I get back (int)1. So for "null" I would 
expect "null".

Comment 8 Olivier Thomann

2002-03-19 15:58:48 EST

Fixed and released in HEAD.