Polymorphic.java

import org.checkerframework.common.value.qual.*;

class Polymorphic {

    //Identity functions

    int @PolyValue [] identity_array(int @PolyValue [] a) {
        return a;
    }

    @PolyValue int identity_int(@PolyValue int a) {
        return a;
    }

    void minlen_id(int @MinLen(5) [] a) {
        int @MinLen(5) [] b = identity_array(a);
        //:: error: (assignment.type.incompatible)
        int @MinLen(6) [] c = identity_array(b);
    }

    void use(int @ArrayLenRange(from = 5, to = 25) [] a) {
        int @ArrayLenRange(from = 5, to = 25) [] b = identity_array(a);
        //:: error: (assignment.type.incompatible)
        int @ArrayLenRange(from = 1, to = 13) [] c = identity_array(a);
    }

    void use2(@IntRange(from = 5, to = 25) int a) {
        @IntRange(from = 5, to = 25) int b = identity_int(a);
        //:: error: (assignment.type.incompatible)
        @IntVal(3) int x = identity_int(a);
    }
}