Bug An exception occurs in IndexedSet.ToList

Hello

I write this code.

var canvasGraphics = GraphicRegistry.GetRaycastableGraphicsForCanvas(_canvas).ToList();

This code works fine the first time.
But when, destroy some parts of the UI, An exception occurs.

System.Collections.Generic.List`1[T].CopyTo (T[] array, System.Int32 arrayIndex) (at <c2a97e0383e8404c9fc0ae19d58f57f1>:0)

UnityEngine.UI.Collections.IndexedSet`1[T].CopyTo (T[] array, System.Int32 arrayIndex) (at Library/PackageCache/com.unity.ugui@1.0.0/Runtime/UI/Core/SpecializedCollections/IndexedSet.cs:121)

System.Collections.Generic.List`1[T]..ctor (System.Collections.Generic.IEnumerable`1[T] collection) (at <c2a97e0383e8404c9fc0ae19d58f57f1>:0)

System.Linq.Enumerable.ToList[TSource] (System.Collections.Generic.IEnumerable`1[T] source) (at <93223d662c2546d4b5d1784737504095>:0)

SRD.Utils.SRDGraphicRaycaster.Raycast (UnityEngine.EventSystems.PointerEventData eventData, System.Collections.Generic.List`1[T] resultAppendList) (at Assets/SRDisplayUnityPlugin/Runtime/Utils/SRDGraphicRaycaster.cs:85)

This is because you are trying to copy the empty part of m_List as well.
However, the allocated array is only for m_EnabledObjectCount, so the capacity is not enough.

I am getting around the exception with the source code below.

 

          var tempCanvasGraphics = GraphicRegistry.GetRaycastableGraphicsForCanvas(_canvas);

            if(tempCanvasGraphics == null || tempCanvasGraphics.Count == 0)

            {

                return;

            }

           var canvasGraphics = new Graphic[tempCanvasGraphics.Count];

           for (var i = 0; i < tempCanvasGraphics.Count; i++)

           {

               canvasGraphics[i] = tempCanvasGraphics[i];

           }

Thanks.