Nested anonymous class results in exception

[wmdietl]

An Invalid variable and element passed to extractAndApply occurs, at least in Java 11, when an annotated nested anonymous class is encountered.

import org.checkerframework.checker.tainting.qual.Tainted;

class NestedAnonymous {
    Object o = new Outer.@Tainted Inner() {};

    static class Outer {
        static class Inner {}
    }
}

Running the Tainting Checker results in:

    :-1: other: error: handleInvalid(this=org.checkerframework.framework.util.element.VariableApplier):
      Invalid variable and element passed to extractAndApply; type: Object
        element: o2 (kind: FIELD), invalid annotations: @org.checkerframework.checker.tainting.qual.Tainted ([CLASS_EXTENDS, type_index = 65535, pos = 228])
      Targeted annotations: LOCAL_VARIABLE, RESOURCE_VARIABLE, EXCEPTION_PARAMETER, FIELD
      Valid annotations: NEW, CAST, INSTANCEOF, METHOD_INVOCATION_TYPE_ARGUMENT, CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT, METHOD_REFERENCE, CONSTRUCTOR_REFERENCE, METHOD_REFERENCE_TYPE_ARGUMENT, CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT, METHOD_FORMAL_PARAMETER
      ; The Checker Framework crashed.  Please report the crash.
      Compilation unit: /home/wdietl/workspaces-server/eisop-cf/checker-framework/checker/tests/tainting/NestedAnonymous.java
      Last visited tree at line 4 column 1:
      class NestedAnonymous {
      Exception: java.lang.Throwable; java.lang.Throwable
        at org.checkerframework.javacutil.BugInCF.<init>(BugInCF.java:22)
        at org.checkerframework.framework.util.element.TargetedElementAnnotationApplier.handleInvalid(TargetedElementAnnotationApplier.java:150)
        at org.checkerframework.framework.util.element.TargetedElementAnnotationApplier.extractAndApply(TargetedElementAnnotationApplier.java:214)
        at org.checkerframework.framework.util.element.VariableApplier.extractAndApply(VariableApplier.java:112)
...