[NETBEANS-913] "AssertionError" when writing an annotation inside of a type cast

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 9.0
• Component/s: cnd - Code Completion

Environment

IDE: NetBeans 9 RC1
OS : Debian 9.4 - Stretch - amd64
Kernel: Linux 4.9.0-6-amd64 #1 SMP Debian 4.9.88-1+deb9u1 (2018-05-07) x86_64 GNU/Linux
JDK: Oracle JDK 10.0.1

• Assignee: Unassigned
• Reporter: negora
• Created: 04/Jun/18 12:03
• Updated: 04/Jun/18 12:11

Description

I've just created a Maven project that uses JAR packaging and Java 10. I've added a class called "Main" and I've written this in it:

public class Main {

    public static void main (String[] arguments) {
        var foo = (String) null;
    }

}

 

Then, I've typed an "at" symbol (@) inside the type cast, in order to get this:

public class Main {

    public static void main (String[] arguments) {
        var foo = (@Nullable String) null;
    }

}

 

But NetBeans has thrown the following exception:

java.lang.AssertionError
    at com.sun.tools.javac.util.Assert.error(Assert.java:155)
    at com.sun.tools.javac.util.Assert.checkNonNull(Assert.java:62)
    at com.sun.tools.javac.comp.Annotate.fromAnnotations(Annotate.java:167)
    at com.sun.tools.javac.comp.Annotate.lambda$annotateTypeSecondStage$5(Annotate.java:1031)
    at com.sun.tools.javac.comp.Annotate.flush(Annotate.java:194)
    at com.sun.tools.javac.comp.Annotate.unblockAnnotations(Annotate.java:144)
    at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:333)
    at com.sun.tools.javac.comp.Attr.visitClassDef(Attr.java:953)
    at org.netbeans.lib.nbjavac.services.NBAttr.visitClassDef(NBAttr.java:57)
    at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:778)
    at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:660)
    at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:736)
    at com.sun.tools.javac.comp.Attr.visitAnonymousClassDefinition(Attr.java:2495)
    at com.sun.tools.javac.comp.Attr.visitNewClass(Attr.java:2379)
    at org.netbeans.lib.nbjavac.services.NBAttr.visitNewClass(NBAttr.java:74)
    at com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1695)
    at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:660)
    at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:706)
    at org.netbeans.modules.java.hints.spiimpl.Utilities.attributeTree(Utilities.java:650)
    at org.netbeans.modules.java.hints.spiimpl.Utilities.parseAndAttribute(Utilities.java:430)
    at org.netbeans.modules.java.hints.spiimpl.Utilities.parseAndAttribute(Utilities.java:344)
    at org.netbeans.modules.java.hints.spiimpl.Utilities.parseAndAttribute(Utilities.java:324)
    at org.netbeans.modules.java.hints.spiimpl.Utilities.parseAndAttribute(Utilities.java:320)
    at org.netbeans.modules.java.hints.spiimpl.pm.PatternCompiler.compile(PatternCompiler.java:44)
    at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.doComputeHints(HintsInvoker.java:535)
    at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHintsImpl(HintsInvoker.java:283)
    at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:228)
    at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:193)
    at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:166)
    at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:128)
    at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:114)
    at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:65)
    at org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWrapper.run(JavaSourceAccessor.java:273)
    at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:561)
    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)
[catch] at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:663)
    at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:514)
    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)

Thank you!