[NETBEANS-2094] AssertionError while typing before an annotation in anonymous inner class

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Information Provided
• Affects Version/s: 10.0
• Fix Version/s: NB13
• Component/s: java - Source
• Assignee: Akhilesh Singh
• Reporter: Austin Stephens
• Created: 07/Feb/19 22:11
• Updated: 04/Feb/22 09:45
• Resolved: 04/Feb/22 09:45

Description

Paste the following into a code file:

    public static InputStream foo(InputStream from){
            return new InputStream() {
            MemoryStream ms = new MemoryStream();
            GZIPOutputStream compress = new GZIPOutputStream(ms.getOutputStream());
            
            @Override
            public int read() throws IOException {
                throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
            }
        }
    }

and try to type "byte[] buffer" above the Override Annotation. An assertion error will be thrown with the stack trace of:

Assert.error:155    
Assert.checkNonNull:62    
Annotate.fromAnnotations:167    
Annotate.lambda$annotateTypeSecondStage$5:1031    
861978341.run    
Annotate.flush:194    
Annotate.unblockAnnotations:144    
TypeEnter.complete:229    
Symbol.complete:645    
Symbol$ClassSymbol.complete:1352    
Attr.visitClassDef:982    
NBAttr.visitClassDef:61    
JCTree$JCClassDecl.accept:778    
Attr.attribTree:673    
Attr.attribStat:749    
Attr.visitAnonymousClassDefinition:2508    
Attr.visitNewClass:2391    
JCTree$JCNewClass.accept:1695    
Attr.attribTree:673    
Attr.visitReturn:1931    
JCTree$JCReturn.accept:1552    
Attr.attribTree:673    
Attr.attribStat:749    
Attr.attribStats:773    
Attr.visitBlock:1350    
NBAttr.visitBlock:73    
JCTree$JCBlock.accept:1026    
Attr.attribTree:673    
Attr.attribStat:749     
JavacParser.parseImpl:399    
JavacParser.parse:332    
TaskProcessor.callParse:598    
SourceCache.getResult:228    
ResultIterator.getParserResult:115    
ResultIterator.getParserResult:129   
TaskProcessor.callUserTask:586    
ParserManager$UserTaskAction.run:130    
ParserManager$UserTaskAction.run:114    
TaskProcessor$2.call:181    
TaskProcessor$2.call:178    
FileChangedManager.priorityIO:153    
ProvidedExtensions.priorityIO:335    
DataObjectEnvFactory.runPriorityIO:118    
Utilities.runPriorityIO:67    
TaskProcessor.runUserTask:178    
ParserManager.parse:81    
JPACodeCompletionProvider$JPACodeCompletionQuery.query:118    
AsyncCompletionTask.run:198    
RequestProcessor$Task.run:1418    
GlobalLookup.execute:45    
Lookups.executeWith:278    
RequestProcessor$Processor.run:2033   

 It will also explode with a NullPointer if you try to add a variable before "MemoryStream" (e.g. "byte[] buffer =")

Issue Links

• is cloned by: NETBEANS-2096 CLONE - AssertionError while typing before an annotation in anonymous inner class