FIX: ISXB-1718 Corrections to not generate warnings on Unity 6.3b05.

Assets/Tests/InputSystem/CorePerformanceTests.cs

@@ -123,7 +123,6 @@ public void Performance_ReadEveryKey()
 
         Measure.Method(() =>
         {
-            int keyIndex = 0;
             foreach (var key in keyboard.allKeys)
             {
                 key.ReadValue();

Packages/com.unity.inputsystem/CHANGELOG.md

@@ -10,7 +10,8 @@ however, it has to be formatted properly to pass verification tests.
 
 ## [Unreleased] - yyyy-mm-dd
 
-
+### Fixed
+- Fixed warnings being generated on Unity 6.3 (beta). (ISXB-1718).
 
 ## [1.15.0] - 2025-10-03
 

Packages/com.unity.inputsystem/InputSystem/Devices/Precompiled/FastKeyboard.cs

@@ -13,10 +13,12 @@
 using UnityEngine.InputSystem.LowLevel;
 using UnityEngine.InputSystem.Utilities;
 
-// Suppress warnings from local variables for control references
-// that we don't end up using.
+// Suppress warnings from local variables for control references that we don't end up using.
 #pragma warning disable CS0219
 
+// Suppress warnings from obsolete code when references from auto-generated code from the same code base.
+#pragma warning disable CS0618
+
 namespace UnityEngine.InputSystem
 {
     internal partial class FastKeyboard : UnityEngine.InputSystem.Keyboard

Packages/com.unity.inputsystem/InputSystem/Devices/Precompiled/FastMouse.cs

@@ -13,10 +13,12 @@
 using UnityEngine.InputSystem.LowLevel;
 using UnityEngine.InputSystem.Utilities;
 
-// Suppress warnings from local variables for control references
-// that we don't end up using.
+// Suppress warnings from local variables for control references that we don't end up using.
 #pragma warning disable CS0219
 
+// Suppress warnings from obsolete code when references from auto-generated code from the same code base.
+#pragma warning disable CS0618
+
 namespace UnityEngine.InputSystem
 {
     internal partial class FastMouse : UnityEngine.InputSystem.Mouse

Packages/com.unity.inputsystem/InputSystem/Devices/Precompiled/FastTouchscreen.cs

@@ -13,10 +13,12 @@
 using UnityEngine.InputSystem.LowLevel;
 using UnityEngine.InputSystem.Utilities;
 
-// Suppress warnings from local variables for control references
-// that we don't end up using.
+// Suppress warnings from local variables for control references that we don't end up using.
 #pragma warning disable CS0219
 
+// Suppress warnings from obsolete code when references from auto-generated code from the same code base.
+#pragma warning disable CS0618
+
 namespace UnityEngine.InputSystem
 {
     internal partial class FastTouchscreen : UnityEngine.InputSystem.Touchscreen

Packages/com.unity.inputsystem/InputSystem/Editor/AssetEditor/InputActionEditorWindow.cs

@@ -42,9 +42,9 @@ static InputActionEditorWindow()
             InputActionAssetEditor.RegisterType<InputActionEditorWindow>();
         }
 
-        // Unity 6.4 changed signature of OpenAsset, and now it accepts entity id instead of instance id.
+        // Unity 6.3 changed signature of OpenAsset, and now it accepts entity id instead of instance id.
         [OnOpenAsset]
-#if UNITY_6000_4_OR_NEWER
+#if UNITY_6000_3_OR_NEWER
         public static bool OpenAsset(EntityId entityId, int line)
         {
             if (!InputActionImporter.IsInputActionAssetPath(AssetDatabase.GetAssetPath(entityId)))

Packages/com.unity.inputsystem/InputSystem/Editor/InputLayoutCodeGenerator.cs

@@ -105,10 +105,12 @@ public static unsafe string GenerateCodeForDeviceLayout(string layoutName, strin
             writer.WriteLine("using UnityEngine.InputSystem.LowLevel;");
             writer.WriteLine("using UnityEngine.InputSystem.Utilities;");
             writer.WriteLine("");
-            writer.WriteLine("// Suppress warnings from local variables for control references");
-            writer.WriteLine("// that we don't end up using.");
+            writer.WriteLine("// Suppress warnings from local variables for control references that we don't end up using.");
             writer.WriteLine("#pragma warning disable CS0219");
             writer.WriteLine("");
+            writer.WriteLine("// Suppress warnings from obsolete code when references from auto-generated code from the same code base.");
+            writer.WriteLine("#pragma warning disable CS0618");
+            writer.WriteLine("");
             if (!string.IsNullOrEmpty(@namespace))
             {
                 writer.WriteLine("namespace " + @namespace);

Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/InputActionsEditorWindow.cs

@@ -48,9 +48,9 @@ static InputActionsEditorWindow()
             m_Analytics ??= new InputActionsEditorSessionAnalytic(
                 InputActionsEditorSessionAnalytic.Data.Kind.EditorWindow);
 
-        // Unity 6.4 changed signature of OpenAsset, and now it accepts entity id instead of instance id.
+        // Unity 6.3 changed signature of OpenAsset, and now it accepts entity id instead of instance id.
         [OnOpenAsset]
-#if UNITY_6000_4_OR_NEWER
+#if UNITY_6000_3_OR_NEWER
         public static bool OpenAsset(EntityId entityId, int line)
         {
             if (!InputActionImporter.IsInputActionAssetPath(AssetDatabase.GetAssetPath(entityId)))

Packages/com.unity.inputsystem/InputSystem/InputSystem.cs

@@ -3695,10 +3695,10 @@ internal static void OnPlayModeChange(PlayModeStateChange change)
             }
         }
 
-        // We have this function to hide away instanceId -> entityId migration that happened in Unity 6.4
+        // We have this function to hide away instanceId -> entityId migration that happened in Unity 6.3
         public static bool HasNativeObject(Object obj)
         {
-#if UNITY_6000_4_OR_NEWER
+#if UNITY_6000_3_OR_NEWER
             return EditorUtility.EntityIdToObject(obj.GetEntityId()) != null;
 #else
             return EditorUtility.InstanceIDToObject(obj.GetInstanceID()) != null;