A java.lang.IllegalStateException has occurred.

### Apache NetBeans version

Apache NetBeans 29

### What happened

```
Annotation: An error occurred during parsing of '/mnt/agl/nbworkspace/TPS/src/org/infolab/tps/modules/FactDiv.java'. Please report a bug against java/source and attach dump file '/home/chris/.netbeans/29/var/log/FactDiv_1.dump'.
Annotation: An error occurred during parsing of '/mnt/agl/nbworkspace/TPS/src/org/infolab/tps/modules/FactDiv.java'. Please report a bug against java/source and attach dump file '/home/chris/.netbeans/29/var/log/FactDiv_1.dump'.
Annotation: An error occurred during parsing of '/mnt/agl/nbworkspace/TPS/src/org/infolab/tps/modules/FactDiv.java'. Please report a bug against java/source and attach dump file '/home/chris/.netbeans/29/var/log/FactDiv_1.dump'.
An error occurred during parsing of '/mnt/agl/nbworkspace/TPS/src/org/infolab/tps/modules/FactDiv.java'. Please report a bug against java/source and attach dump file '/home/chris/.netbeans/29/var/log/FactDiv_1.dump'.
An error occurred during parsing of '/mnt/agl/nbworkspace/TPS/src/org/infolab/tps/modules/FactDiv.java'. Please report a bug against java/source and attach dump file '/home/chris/.netbeans/29/var/log/FactDiv_1.dump'.
Caused: java.lang.NullPointerException: Cannot read field "pos" because "sym" is null
at com.sun.tools.javac.comp.Flow$AssignAnalyzer.trackable(Flow.java:1709)
at com.sun.tools.javac.comp.Flow$AssignAnalyzer.visitVarDef(Flow.java:2092)
at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:1082)
at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:50)
at com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:445)
at com.sun.tools.javac.comp.Flow$AssignAnalyzer.scan(Flow.java:1605)
at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:58)
at com.sun.tools.javac.comp.Flow$AssignAnalyzer.visitBlock(Flow.java:2106)
at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1152)
at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:50)
at com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:445)
at com.sun.tools.javac.comp.Flow$AssignAnalyzer.scan(Flow.java:1605)
at com.sun.tools.javac.comp.Flow$AssignAnalyzer.visitMethodDef(Flow.java:2018)
at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:967)
at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:50)
at com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:445)
at com.sun.tools.javac.comp.Flow$AssignAnalyzer.scan(Flow.java:1605)
at com.sun.tools.javac.comp.Flow$AssignAnalyzer.visitClassDef(Flow.java:1961)
at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:866)
at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:50)
at com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:445)
at com.sun.tools.javac.comp.Flow$AssignAnalyzer.scan(Flow.java:1605)
at com.sun.tools.javac.comp.Flow$AssignAnalyzer.analyzeTree(Flow.java:2742)
at com.sun.tools.javac.comp.Flow$AssignAnalyzer.analyzeTree(Flow.java:2724)
at com.sun.tools.javac.comp.Flow.analyzeTree(Flow.java:216)
at com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1420)
at com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1384)
at com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:404)
at com.sun.tools.javac.api.JavacTaskImpl.lambda$analyze$0(JavacTaskImpl.java:379)
at com.sun.tools.javac.api.JavacTaskImpl.invocationHelper(JavacTaskImpl.java:152)
at com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:379)
Caused: java.lang.IllegalStateException
at com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:383)
at org.netbeans.modules.java.source.parsing.JavacParser.moveToPhase(JavacParser.java:765)
at org.netbeans.modules.java.source.parsing.CompilationInfoImpl.toPhase(CompilationInfoImpl.java:425)
at org.netbeans.api.java.source.CompilationController.toPhase(CompilationController.java:90)
at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser.toPhase(PreferredCCParser.java:702)
at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser$3.call(PreferredCCParser.java:182)
at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser$3.call(PreferredCCParser.java:179)
at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser.runGuarded(PreferredCCParser.java:747)
at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser.getOperations(PreferredCCParser.java:179)
at org.netbeans.modules.debugger.jpda.projects.EditorContextSupport.getOperations(EditorContextSupport.java:1408)
at org.netbeans.modules.debugger.jpda.projectsui.EditorContextImpl.getOperations(EditorContextImpl.java:765)
at org.netbeans.modules.debugger.jpda.ExpressionPool.createExpressionAt(ExpressionPool.java:186)
at org.netbeans.modules.debugger.jpda.ExpressionPool.getExpressionAt(ExpressionPool.java:82)
at org.netbeans.modules.debugger.jpda.actions.JPDAMethodChooserUtils.init(JPDAMethodChooserUtils.java:116)
at org.netbeans.modules.debugger.jpda.actions.JPDAMethodChooserUtils.init(JPDAMethodChooserUtils.java:93)
at org.netbeans.modules.debugger.jpda.ui.actions.MethodChooserSupport.init(MethodChooserSupport.java:136)
at org.netbeans.modules.debugger.jpda.ui.actions.JPDAMethodChooserFactoryUIImpl.initChooserUI(JPDAMethodChooserFactoryUIImpl.java:48)
at org.netbeans.modules.debugger.jpda.actions.StepIntoActionProvider.doMethodSelection(StepIntoActionProvider.java:174)
at org.netbeans.modules.debugger.jpda.actions.StepIntoActionProvider.runAction(StepIntoActionProvider.java:114)
at org.netbeans.modules.debugger.jpda.actions.StepIntoActionProvider$1.run(StepIntoActionProvider.java:103)
at org.netbeans.modules.debugger.jpda.actions.JPDADebuggerActionProvider$1.run(JPDADebuggerActionProvider.java:176)
at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1403)
at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:287)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2012)
```

### Language / Project Type / NetBeans Component

java ant

### How to reproduce

I am tired of repeating that it is enough to use this version for it to bug. I am thinking of going back to the less defective version 8.

### Did this work correctly in an earlier version?

No / Don't know

### Operating System

Linux 6.4.0-150600.23.81-default #1 SMP PREEMPT_DYNAMIC

### JDK

Product Version: Apache NetBeans IDE 29 Java: 24.0.2; OpenJDK 64-Bit Server VM 24.0.2+12 Runtime: OpenJDK Runtime Environment 24.0.2+12

### Apache NetBeans packaging

Apache NetBeans binary zip

### Anything else

_No response_

### Are you willing to submit a pull request?

No

Start with the reported stack trace and the java/source and debugger JPDA entry points, especially JavacParser.java, PreferredCCParser.java, and StepIntoActionProvider.java. Reproduce the failure with Apache NetBeans 29, JDK 24, and the referenced FactDiv.java project; done means stepping into a method no longer triggers the parser exception.

Written by the indexing model from the issue text.