checker/tests/index/RandomTest.java

import java.util.Random;
import org.checkerframework.checker.index.qual.LTLengthOf;

public class RandomTest {
  void test() {
    Random rand = new Random();
    int[] a = new int[8];
    // :: error: (anno.on.irrelevant)
    @LTLengthOf("a") double d1 = Math.random() * a.length;
    @LTLengthOf("a") int deref = (int) (Math.random() * a.length);
    @LTLengthOf("a") int deref2 = (int) (rand.nextDouble() * a.length);
    @LTLengthOf("a") int deref3 = rand.nextInt(a.length);
  }
}