Warning on null-check (warning CS0472)?

[TheDDestroyer12]

I get a warning (warning CS0472) when I check if a value is null. This is the code I’m using:

BuildingSystem.cs:

using UnityEngine;
using System.Collections;

public class BuildingSystem : MonoBehaviour {
	
	private Vector3 point;
	private GameObject selectedObject;

	void Start () {

	}

	void Update () {
		if(SelectionSystem.getInWorldPoint() == null) {           // warning CS0472
			selectedObject = SelectionSystem.getSelection();
		} else {
			point = SelectionSystem.getInWorldPoint();
		}
	}
}

SelectionSystem.cs:

using UnityEngine;
using System.Collections;

public class SelectionSystem : MonoBehaviour {

	private static RaycastHit hit;
	private static GameObject selected = null;
	private static Vector3 inWorldPoint = new Vector3(0, 0, 0);

	void Start () {

	}

	void Update () {
		Ray ray = camera.ScreenPointToRay(Input.mousePosition);

		if(Physics.Raycast(ray, out hit, 500)) {
			if(Input.GetKeyDown(KeyCode.Mouse0)) {
				if(hit.collider.tag == "Selectable") {
					selected = hit.collider.gameObject;
					Debug.Log("Selected: " + selected.name);
				} else {
					selected = null;
					inWorldPoint = hit.point;
				}
			}
		}
	}

	public static GameObject getSelection() {
		return selected;
	}

	public static Vector3 getInWorldPoint() {
		return inWorldPoint;
	}
}

I get the warning on line 14 in BuildingSystem.cs (Commented in the code).
Warning text:

warning CS0472: The result of comparing value of type UnityEngine.Vector3' with null is false’

I’ve read this, but the value I’m getting an error for is actually changing. Why do I get that error???

/TheDDestroyer12

[HarshadK]

In your BuildingSystem.cs change your line with error to:

if(SelectionSystem.getInWorldPoint() == Vector3.zero) {

instead of null.

[GameVortex]

You are comparing a Vector3 with null. Vector3 is a non-Nullable type, which means it will never be null. The warning tells you that the result of the check will always be false, and is therefore redundant.

[767_2]

the returning value of this SelectionSystem.getInWorldPoint() wont be null in worst case scenario it will be zero