IssueTracker

Consider code like this:

package test;

class TestClass {
  @Retention(RetentionPolicy.SOURCE)
  @Target({ElementType.TYPE})
  public @interface SourceRetentionAnnotation {}

  @SourceRetentionAnnotation
  static class Inner {}

  public static void main(String[] args) {
    new Inner();
  }
}

When compiled with javac with nest access the class TestClass will have this NestMembers attribute:

NestMembers:
  test/TestClass$Inner
  test/TestClass$SourceRetentionAnnotation

When building a library with this code it seems obvious that the class TestClass$SourceRetentionAnnotation can be removed. However that breaks desugaring as that requires all classes in a nest to be present.

There is no way see from the NestMembers attribute (or from other attributes) that TestClass$SourceRetentionAnnotation can have no effect on desugaring.