Consider this code:
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import module java.base;

import javax.annotation.processing.AbstractProcessor;
import javax.annotation.processing.RoundEnvironment;
import javax.annotation.processing.SupportedAnnotationTypes;
import javax.lang.model.element.TypeElement;

@SupportedAnnotationTypes("*")
public class AP extends AbstractProcessor {

    @Override
    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
        return false;
    }
    
}
---

Compiling this while running itself as an annotation processor crashes:
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$ javac --enable-preview -source 23 AP.java
Note: AP.java uses preview features of Java SE 23.
Note: Recompile with -Xlint:preview for details.
$ javac -J--enable-preview --enable-preview -source 23 -processor AP AP.java
warning: No SupportedSourceVersion annotation found on AP, returning RELEASE_6.
warning: Supported source version 'RELEASE_6' from annotation processor 'AP' less than -source '23'
2 warnings
An exception has occurred in the compiler (23-internal). Please file a bug against the Java compiler via the Java bug reporting page (https://bugreport.java.com) after checking the Bug Database (https://bugs.java.com) for duplicates. Include your program, the following diagnostic, and the parameters passed to the Java compiler in your report. Thank you.
java.lang.AssertionError
        at jdk.compiler/com.sun.tools.javac.util.Assert.error(Assert.java:155)
        at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.visitTree(TreeScanner.java:415)
        at jdk.compiler/com.sun.tools.javac.tree.JCTree$Visitor.visitModuleImport(JCTree.java:3528)
        at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCModuleImport.accept(JCTree.java:720)
        at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:50)
        at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment$1.scan(JavacProcessingEnvironment.java:1592)
        at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:58)
        at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.visitTopLevel(TreeScanner.java:67)
        at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment$1.visitTopLevel(JavacProcessingEnvironment.java:1613)
        at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:553)
        at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:50)
        at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment$1.scan(JavacProcessingEnvironment.java:1592)
        at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.newRound(JavacProcessingEnvironment.java:1314)
        at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.<init>(JavacProcessingEnvironment.java:1110)
        at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.next(JavacProcessingEnvironment.java:1151)
        at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1389)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1274)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:947)
        at jdk.compiler/com.sun.tools.javac.main.Main.compile(Main.java:319)
        at jdk.compiler/com.sun.tools.javac.main.Main.compile(Main.java:178)
        at jdk.compiler/com.sun.tools.javac.Main.compile(Main.java:66)
        at jdk.compiler/com.sun.tools.javac.Main.main(Main.java:52)
printing javac parameters to: /tmp/ap-module-imports/javac.20240519_083714.args
---