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Fixed in 2018.2.2f1



Found in


Issue ID




Default argument value makes the Editor recognize a script as not valid



To reproduce:

1. Open the project, attached by the tester (
2. Open the "scene" scene
3. Select the obj game object in the hierarchy and see that Z script is recognized as valid script
4. Open the Z script and add default value to the testMethod's string a argument in the class Y
5. Return to the Editor and wait for compilation to end
6. Select the game object again and observe how script is not recognized anymore

Expected: default argument value doesn't have an influence on whether the script is valid or not

Reproduced in 5.5.5p1, 5.6.4p1, 2017.1.1f1, 2017.1.2p2, 2017.2.0p1, 2017.3.0b6, 2018.1.0a1

Comments (1)

  1. TylerVezina

    Mar 08, 2018 13:03

    I ran into the same issue. The following script exhibits this issue; removing the default value fixes the script, and so does removing the namespace:

    using UnityEngine;

    namespace Fake
    public class NotComponent
    public void Something(bool value = true) { }

    public class Test : MonoBehaviour { }

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