checker/tests/index/UBSubtyping.java

import org.checkerframework.checker.index.qual.LTEqLengthOf;
import org.checkerframework.checker.index.qual.LTLengthOf;
import org.checkerframework.checker.index.qual.UpperBoundUnknown;

public class UBSubtyping {
  int[] arr = {1};
  int[] arr2 = {1};
  int[] arr3 = {1};

  void test(@LTEqLengthOf({"arr", "arr2", "arr3"}) int test) {
    // :: error: (assignment)
    @LTEqLengthOf({"arr"}) int a = 1;
    // :: error: (assignment)
    @LTLengthOf({"arr"}) int a1 = 1;

    // :: error: (assignment)
    @LTLengthOf({"arr"}) int b = a;
    @UpperBoundUnknown int d = a;

    // :: error: (assignment)
    @LTLengthOf({"arr2"}) int g = a;

    // :: error: (assignment)
    @LTEqLengthOf({"arr", "arr2", "arr3"}) int h = 2;

    @LTEqLengthOf({"arr", "arr2"}) int h2 = test;
    @LTEqLengthOf({"arr"}) int i = test;
    @LTEqLengthOf({"arr", "arr3"}) int j = test;
  }
}