Clang 13: Fix build errors ...

... due to local variables only being written to (but never read).

Signed-off-by: Daniel Edwards <dev@danieledwards.de>

Code/Editor/EditorPreferencesPageAWS.cpp

@@ -101,7 +101,7 @@ void CEditorPreferencesPage_AWS::SaveSettingsRegistryFile()
                 return;
             }
 
-            bool saved{};
+            [[maybe_unused]] bool saved{};
             constexpr auto configurationMode =
                 AZ::IO::SystemFile::SF_OPEN_CREATE | AZ::IO::SystemFile::SF_OPEN_CREATE_PATH | AZ::IO::SystemFile::SF_OPEN_WRITE_ONLY;
             if (AZ::IO::SystemFile outputFile; outputFile.Open(resolvedPath.data(), configurationMode))

Code/Editor/Settings.cpp

@@ -1128,7 +1128,7 @@ void SEditorSettings::SaveSettingsRegistryFile()
         return;
     }
 
-    bool saved{};
+    [[maybe_unused]] bool saved{};
     constexpr auto configurationMode = AZ::IO::SystemFile::SF_OPEN_CREATE
         | AZ::IO::SystemFile::SF_OPEN_CREATE_PATH
         | AZ::IO::SystemFile::SF_OPEN_WRITE_ONLY;

Code/Editor/ViewPane.cpp

@@ -745,7 +745,7 @@ namespace
 
     void PySetActiveViewport(unsigned int viewportIndex)
     {
-        bool success = false;
+        [[maybe_unused]] bool success = false;
         CLayoutWnd* layout = GetIEditor()->GetViewManager()->GetLayout();
         if (layout)
         {

Code/Framework/AzCore/AzCore/Math/Matrix3x4.cpp

@@ -25,7 +25,7 @@ namespace AZ
 
         void Matrix3x4SetRowGeneric(Matrix3x4* thisPtr, ScriptDataContext& dc)
         {
-            bool rowIsSet = false;
+            [[maybe_unused]] bool rowIsSet = false;
             if (dc.GetNumArguments() >= 5)
             {
                 if (dc.IsNumber(0))
@@ -88,7 +88,7 @@ namespace AZ
 
         void Matrix3x4SetColumnGeneric(Matrix3x4* thisPtr, ScriptDataContext& dc)
         {
-            bool columnIsSet = false;
+            [[maybe_unused]] bool columnIsSet = false;
             if (dc.GetNumArguments() >= 4)
             {
                 if (dc.IsNumber(0))
@@ -133,7 +133,7 @@ namespace AZ
 
         void Matrix3x4SetTranslationGeneric(Matrix3x4* thisPtr, ScriptDataContext& dc)
         {
-            bool translationIsSet = false;
+            [[maybe_unused]] bool translationIsSet = false;
 
             if (dc.GetNumArguments() == 3 &&
                 dc.IsNumber(0) &&

Code/Framework/AzCore/AzCore/Math/Uuid.cpp

@@ -77,7 +77,7 @@ namespace AZ
 
         // check open brace
         char c = *current++;
-        bool has_open_brace = false;
+        [[maybe_unused]] bool has_open_brace = false;
         if (c == '{')
         {
             c = *current++;

Code/Framework/AzCore/AzCore/Name/NameDictionary.cpp

@@ -85,7 +85,7 @@ namespace AZ
 
     NameDictionary::~NameDictionary()
     {
-        bool leaksDetected = false;
+        [[maybe_unused]] bool leaksDetected = false;
 
         for (const auto& keyValue : m_dictionary)
         {

Code/Framework/AzCore/Tests/Name/NameTests.cpp

@@ -642,7 +642,7 @@ namespace UnitTest
         char buffer[RandomStringBufferSize];
 
         AZStd::sys_time_t newNameTime;
-        AZStd::sys_time_t existingNameTime;
+        [[maybe_unused]] AZStd::sys_time_t existingNameTime;
         AZStd::sys_time_t stringTime;
 
         {

Code/Framework/AzFramework/AzFramework/Asset/Benchmark/BenchmarkCommands.cpp

@@ -195,7 +195,7 @@ namespace AzFramework::AssetBenchmark
     // Console command:  Add the given list of assets to the list of assets to load with BenchmarkLoadAssetList
     void BenchmarkAddAssetsToList(const AZ::ConsoleCommandContainer& parameters)
     {
-        bool allAssetsAdded = true;
+        [[maybe_unused]] bool allAssetsAdded = true;
 
         for (auto& assetName : parameters)
         {

Code/Framework/AzFramework/Tests/CameraState.cpp

@@ -81,7 +81,7 @@ namespace UnitTest
 
     TEST_P(Rotation, Permutation)
     {
-        int expectedErrors = -1;
+        [[maybe_unused]] int expectedErrors = -1;
         AZ_TEST_START_TRACE_SUPPRESSION;
 
         // Given an orientation derived from the look at points

Code/Framework/AzQtComponents/AzQtComponents/Components/StylesheetPreprocessor.cpp

@@ -134,7 +134,7 @@ namespace AzQtComponents
             QColor color;
             QString colorName(m_namedVariables.value(name));
 
-            bool colorSet = false;
+            [[maybe_unused]] bool colorSet = false;
             if (QColor::isValidColor(colorName))
             {
                 color.setNamedColor(colorName);

Code/Framework/AzToolsFramework/AzToolsFramework/AssetBrowser/Views/EntryDelegate.cpp

@@ -177,7 +177,7 @@ namespace AzToolsFramework
             auto data = index.data(AssetBrowserModel::Roles::EntryRole);
             if (data.canConvert<const AssetBrowserEntry*>())
             {
-                bool isEnabled = (option.state & QStyle::State_Enabled) != 0;
+                [[maybe_unused]] bool isEnabled = (option.state & QStyle::State_Enabled) != 0;
 
                 QStyle* style = option.widget ? option.widget->style() : QApplication::style();
 

Code/Framework/AzToolsFramework/AzToolsFramework/Prefab/PrefabSystemComponent.cpp

@@ -506,7 +506,7 @@ namespace AzToolsFramework
             //Remove all Links owned by the Template from TemplateToLinkIdsMap.
             Template& templateToDelete = findTemplateResult->get();
             const Template::Links& linkIdsToDelete = templateToDelete.GetLinks();
-            bool result;
+            [[maybe_unused]] bool result;
             for (auto linkId : linkIdsToDelete)
             {
                 result = RemoveLinkIdFromTemplateToLinkIdsMap(linkId);
@@ -774,7 +774,7 @@ namespace AzToolsFramework
             }
 
             Link& link = findLinkResult->get();
-            bool result;
+            [[maybe_unused]] bool result;
             result = RemoveLinkIdFromTemplateToLinkIdsMap(linkId, link);
             AZ_Assert(result,
                 "Prefab - PrefabSystemComponent::RemoveLink - "

Code/Framework/AzToolsFramework/AzToolsFramework/Slice/SliceTransaction.cpp

@@ -926,7 +926,7 @@ namespace AzToolsFramework
             const bool entityIsFromIgnoredSliceInstance = ignoreSliceInstance && ignoreSliceInstance->IsValid() && ignoreSliceInstance->GetReference()->GetSliceAsset().GetId() == instanceAddr.GetReference()->GetSliceAsset().GetId();
             if (!entityIsFromIgnoredSliceInstance)
             {
-                bool foundTargetAncestor = false;
+                [[maybe_unused]] bool foundTargetAncestor = false;
 
                 const AZ::SliceComponent::EntityList& entitiesInInstance = instanceAddr.GetInstance()->GetInstantiated()->m_entities;
 

Code/Framework/AzToolsFramework/AzToolsFramework/UI/PropertyEditor/PropertyEnumComboBoxCtrl.cpp

@@ -45,7 +45,7 @@ namespace AzToolsFramework
     void PropertyEnumComboBoxCtrl::setValue(AZ::s64 value)
     {
         m_pComboBox->blockSignals(true);
-        bool indexWasFound = false;
+        [[maybe_unused]] bool indexWasFound = false;
         for (size_t enumValIndex = 0; enumValIndex < m_enumValues.size(); enumValIndex++)
         {
             if (m_enumValues[enumValIndex].first == value)

Code/Framework/AzToolsFramework/Tests/Slices.cpp

@@ -430,7 +430,7 @@ namespace UnitTest
                     size_t nextIndex = 1;
                     size_t slices = 0;
                     size_t liveAllocs = 0;
-                    size_t totalAllocs = 0;
+                    [[maybe_unused]] size_t totalAllocs = 0;
 
                     auto cb = [&liveAllocs](void*, const AZ::Debug::AllocationInfo&, unsigned char)
                         {

Code/Framework/GridMate/GridMate/Carrier/Carrier.cpp

@@ -1952,8 +1952,8 @@ CarrierThread::ProcessConnections()
 
         bool isHandshakeTimeOut = false;
         bool isConnectionTimeout = false;
-        bool isBadTrafficConditions = false;
-        bool isBadPackets = false;
+        [[maybe_unused]] bool isBadTrafficConditions = false;
+        [[maybe_unused]] bool isBadPackets = false;
         if (connection->m_isBadPackets)
         {
             isBadPackets = true;

Code/Tools/AssetProcessor/native/utilities/ApplicationManagerBase.cpp

@@ -544,7 +544,7 @@ void ApplicationManagerBase::InitConnectionManager()
             EBUS_EVENT(AssetProcessor::ConnectionBus, SendPerPlatform, 0, message, QString::fromUtf8(message.m_platform.c_str()));
         };
 
-    bool result = QObject::connect(GetAssetCatalog(), &AssetProcessor::AssetCatalog::SendAssetMessage, connectionAndChangeMessagesThreadContext, forwardMessageFunction, Qt::QueuedConnection);
+    [[maybe_unused]] bool result = QObject::connect(GetAssetCatalog(), &AssetProcessor::AssetCatalog::SendAssetMessage, connectionAndChangeMessagesThreadContext, forwardMessageFunction, Qt::QueuedConnection);
     AZ_Assert(result, "Failed to connect to AssetCatalog signal");
 
     //Application manager related stuff

Code/Tools/AssetProcessor/native/utilities/BuilderManager.inl

@@ -19,7 +19,7 @@ namespace AssetProcessor
         TNetResponse netResponse;
         netRequest.m_request = request;
 
-        AZ::u32 type;
+        [[maybe_unused]] AZ::u32 type;
         QByteArray data;
         AZStd::binary_semaphore wait;
 

Code/Tools/ProjectManager/Source/Settings.cpp

@@ -41,7 +41,7 @@ namespace O3DE::ProjectManager
         o3deUserPath /= AZ::SettingsRegistryInterface::RegistryFolder;
         o3deUserPath /= "ProjectManager.setreg";
 
-        bool saved = false;
+        [[maybe_unused]] bool saved = false;
         constexpr auto configurationMode =
             AZ::IO::SystemFile::SF_OPEN_CREATE | AZ::IO::SystemFile::SF_OPEN_CREATE_PATH | AZ::IO::SystemFile::SF_OPEN_WRITE_ONLY;
 

Code/Tools/SceneAPI/SceneBuilder/Tests/TestsMain.cpp

@@ -25,7 +25,7 @@ protected:
 
         sceneCoreModule = AZ::DynamicModuleHandle::Create("SceneCore");
         AZ_Assert(sceneCoreModule, "SceneBuilder unit tests failed to create SceneCore module.");
-        bool loaded = sceneCoreModule->Load(false);
+        [[maybe_unused]] bool loaded = sceneCoreModule->Load(false);
         AZ_Assert(loaded, "SceneBuilder unit tests failed to load SceneCore module.");
         auto init = sceneCoreModule->GetFunction<AZ::InitializeDynamicModuleFunction>(AZ::InitializeDynamicModuleFunctionName);
         AZ_Assert(init, "SceneBuilder unit tests failed to find the initialization function the SceneCore module.");

Gems/AWSCore/Code/Source/Editor/Attribution/AWSCoreAttributionManager.cpp

@@ -223,7 +223,7 @@ namespace AWSCore
                     return;
                 }
 
-                bool saved {};
+                [[maybe_unused]] bool saved {};
                 constexpr auto configurationMode =
                     AZ::IO::SystemFile::SF_OPEN_CREATE | AZ::IO::SystemFile::SF_OPEN_CREATE_PATH | AZ::IO::SystemFile::SF_OPEN_WRITE_ONLY;
                 if (AZ::IO::SystemFile outputFile; outputFile.Open(resolvedPathAWSPreference.c_str(), configurationMode))

Gems/AssetValidation/Code/Source/AssetSystemTestCommands.cpp

@@ -120,9 +120,9 @@ namespace AssetValidation
             AZ::SimpleLcgRandom randomizer(seedValue);
             int lastTick = 0;
             AZStd::vector<AZ::Data::Asset<AZ::Data::AssetData>> heldAssets;
-            AZStd::size_t heldCount{ 0 };
-            AZ::u64 changeCount{ 0 };
-            AZ::u64 blockCount{ 0 };
+            [[maybe_unused]] AZStd::size_t heldCount{ 0 };
+            [[maybe_unused]] AZ::u64 changeCount{ 0 };
+            [[maybe_unused]] AZ::u64 blockCount{ 0 };
             AZ_TracePrintf("TestChangeAssets", "Beginning run with %zu assets\n", assetList.size());
             while (!forceStop && runMs < runTime)
             {

Gems/Atom/Feature/Common/Code/Source/DiffuseGlobalIllumination/DiffuseProbeGridFeatureProcessor.cpp

@@ -537,7 +537,7 @@ namespace AZ
             request.m_buffer = m_boxIndexBuffer.get();
             request.m_descriptor = AZ::RHI::BufferDescriptor{ AZ::RHI::BufferBindFlags::InputAssembly, m_boxIndices.size() * sizeof(uint16_t) };
             request.m_initialData = m_boxIndices.data();
-            AZ::RHI::ResultCode result = m_bufferPool->InitBuffer(request);
+            [[maybe_unused]] AZ::RHI::ResultCode result = m_bufferPool->InitBuffer(request);
             AZ_Error("DiffuseProbeGridFeatureProcessor", result == RHI::ResultCode::Success, "Failed to initialize box index buffer - error [%d]", result);
 
             // create index buffer view

Gems/Atom/Feature/Common/Code/Source/RayTracing/RayTracingFeatureProcessor.cpp

@@ -123,7 +123,7 @@ namespace AZ
             // create the BLAS buffers for each sub-mesh, or re-use existing BLAS objects if they were already created.
             // Note: all sub-meshes must either create new BLAS objects or re-use existing ones, otherwise it's an error (it's the same model in both cases)
             // Note: the buffer is just reserved here, the BLAS is built in the RayTracingAccelerationStructurePass
-            bool blasInstanceFound = false;
+            [[maybe_unused]] bool blasInstanceFound = false;
             for (uint32_t subMeshIndex = 0; subMeshIndex < mesh.m_subMeshes.size(); ++subMeshIndex)
             {
                 SubMesh& subMesh = mesh.m_subMeshes[subMeshIndex];

Gems/Atom/Feature/Common/Code/Source/ReflectionProbe/ReflectionProbeFeatureProcessor.cpp

@@ -397,7 +397,7 @@ namespace AZ
             request.m_buffer = m_boxIndexBuffer.get();
             request.m_descriptor = AZ::RHI::BufferDescriptor{ AZ::RHI::BufferBindFlags::InputAssembly, m_boxIndices.size() * sizeof(uint16_t) };
             request.m_initialData = m_boxIndices.data();
-            AZ::RHI::ResultCode result = m_bufferPool->InitBuffer(request);
+            [[maybe_unused]] AZ::RHI::ResultCode result = m_bufferPool->InitBuffer(request);
             AZ_Error("ReflectionProbeFeatureProcessor", result == RHI::ResultCode::Success, "Failed to initialize box index buffer - error [%d]", result);
 
             // create index buffer view

Gems/Atom/RHI/Code/Source/RHI/PipelineStateCache.cpp

@@ -364,7 +364,7 @@ namespace AZ
                 AZ_Assert(success, "PipelineStateEntry already exists in the pending cache.");
             }
 
-            ResultCode resultCode = ResultCode::InvalidArgument;
+            [[maybe_unused]] ResultCode resultCode = ResultCode::InvalidArgument;
 
             // Increment the pending compile count on the global entry, which tracks how many pipeline states
             // are currently being compiled across all threads.

Gems/Atom/RHI/Vulkan/Code/Source/RHI/RayTracingBlas.cpp

@@ -120,7 +120,7 @@ namespace AZ
             AZ::RHI::BufferInitRequest scratchBufferRequest;
             scratchBufferRequest.m_buffer = buffers.m_scratchBuffer.get();
             scratchBufferRequest.m_descriptor = scratchBufferDescriptor;
-            RHI::ResultCode resultCode = bufferPools.GetScratchBufferPool()->InitBuffer(scratchBufferRequest);
+            [[maybe_unused]] RHI::ResultCode resultCode = bufferPools.GetScratchBufferPool()->InitBuffer(scratchBufferRequest);
             AZ_Assert(resultCode == RHI::ResultCode::Success, "failed to create BLAS scratch buffer");
             
             BufferMemoryView* scratchMemoryView = static_cast<Buffer*>(buffers.m_scratchBuffer.get())->GetBufferMemoryView();

Gems/Atom/RHI/Vulkan/Code/Source/RHI/RayTracingPipelineState.cpp

@@ -170,7 +170,7 @@ namespace AZ
             createInfo.basePipelineHandle = nullptr;
             createInfo.basePipelineIndex = 0;
 
-            VkResult result = vkCreateRayTracingPipelinesKHR(device.GetNativeDevice(), nullptr, nullptr, 1, &createInfo, nullptr, &m_pipeline);
+            [[maybe_unused]] VkResult result = vkCreateRayTracingPipelinesKHR(device.GetNativeDevice(), nullptr, nullptr, 1, &createInfo, nullptr, &m_pipeline);
             AZ_Assert(result == VK_SUCCESS, "vkCreateRayTracingPipelinesKHR failed");
 
             // retrieve the shader handles

Gems/Atom/RHI/Vulkan/Code/Source/RHI/RayTracingShaderTable.cpp

@@ -43,7 +43,7 @@ namespace AZ
             AZ::RHI::BufferInitRequest shaderTableBufferRequest;
             shaderTableBufferRequest.m_buffer = shaderTableBuffer.get();
             shaderTableBufferRequest.m_descriptor = shaderTableBufferDescriptor;
-            RHI::ResultCode resultCode = bufferPools.GetShaderTableBufferPool()->InitBuffer(shaderTableBufferRequest);
+            [[maybe_unused]] RHI::ResultCode resultCode = bufferPools.GetShaderTableBufferPool()->InitBuffer(shaderTableBufferRequest);
             AZ_Assert(resultCode == RHI::ResultCode::Success, "failed to create shader table buffer");
 
             BufferMemoryView* shaderTableMemoryView = static_cast<Buffer*>(shaderTableBuffer.get())->GetBufferMemoryView();

Gems/Atom/RHI/Vulkan/Code/Source/RHI/RayTracingTlas.cpp

@@ -66,7 +66,7 @@ namespace AZ
                 AZ::RHI::BufferInitRequest tlasInstancesBufferRequest;
                 tlasInstancesBufferRequest.m_buffer = buffers.m_tlasInstancesBuffer.get();
                 tlasInstancesBufferRequest.m_descriptor = tlasInstancesBufferDescriptor;
-                RHI::ResultCode resultCode = bufferPools.GetTlasInstancesBufferPool()->InitBuffer(tlasInstancesBufferRequest);
+                [[maybe_unused]] RHI::ResultCode resultCode = bufferPools.GetTlasInstancesBufferPool()->InitBuffer(tlasInstancesBufferRequest);
                 AZ_Assert(resultCode == RHI::ResultCode::Success, "failed to create TLAS instances buffer");
                 
                 BufferMemoryView* tlasInstancesMemoryView = static_cast<Buffer*>(buffers.m_tlasInstancesBuffer.get())->GetBufferMemoryView();
@@ -160,7 +160,7 @@ namespace AZ
             AZ::RHI::BufferInitRequest scratchBufferRequest;
             scratchBufferRequest.m_buffer = buffers.m_scratchBuffer.get();
             scratchBufferRequest.m_descriptor = scratchBufferDescriptor;
-            RHI::ResultCode resultCode = bufferPools.GetScratchBufferPool()->InitBuffer(scratchBufferRequest);
+            [[maybe_unused]] RHI::ResultCode resultCode = bufferPools.GetScratchBufferPool()->InitBuffer(scratchBufferRequest);
             AZ_Assert(resultCode == RHI::ResultCode::Success, "failed to create TLAS scratch buffer");
             
             BufferMemoryView* scratchMemoryView = static_cast<Buffer*>(buffers.m_scratchBuffer.get())->GetBufferMemoryView();

Gems/Atom/RPI/Code/Source/RPI.Public/Culling.cpp

@@ -312,7 +312,7 @@ namespace AZ
 
             const View::UsageFlags viewFlags = worklistData->m_view->GetUsageFlags();
             const RHI::DrawListMask drawListMask = worklistData->m_view->GetDrawListMask();
-            uint32_t numDrawPackets = 0;
+            [[maybe_unused]] uint32_t numDrawPackets = 0;
             uint32_t numVisibleCullables = 0;
 
             AZ_Assert(worklist.size() > 0, "Received empty worklist in ProcessWorklist");

Gems/Atom/RPI/Code/Source/RPI.Public/Scene.cpp

@@ -322,7 +322,7 @@ namespace AZ
         
         void Scene::RemoveRenderPipeline(const RenderPipelineId& pipelineId)
         {
-            bool removed = false;
+            [[maybe_unused]] bool removed = false;
             for (auto it = m_pipelines.begin(); it != m_pipelines.end(); ++it)
             {
                 if (pipelineId == (*it)->GetId())

Gems/EMotionFX/Code/EMotionFX/Source/Mesh.cpp

@@ -123,7 +123,7 @@ namespace EMotionFX
             TargetType* targetBuffer = static_cast<TargetType*>(targetVertexAttributeLayer->GetData());
 
             // Fill the vertex attribute layer by iterating through the Atom meshes and copying over the vertex data for each.
-            size_t addedElements = 0;
+            [[maybe_unused]] size_t addedElements = 0;
             for (const AZ::RPI::ModelLodAsset::Mesh& atomMesh : sourceModelLod->GetMeshes())
             {
                 const uint32_t atomMeshVertexCount = atomMesh.GetVertexCount();

Gems/EMotionFX/Code/EMotionFX/Source/Recorder.cpp

@@ -863,7 +863,7 @@ namespace EMotionFX
         }
 
         // process all objects for this frame
-        size_t totalBytesRead = 0;
+        [[maybe_unused]] size_t totalBytesRead = 0;
         const size_t numObjects = frameObjects.size();
         for (size_t a = 0; a < numObjects; ++a)
         {

Gems/GraphModel/Code/Source/Model/Node.cpp

@@ -68,7 +68,7 @@ namespace GraphModel
         CreateSlotData(m_inputEventSlots, m_inputEventSlotDefinitions);
         CreateSlotData(m_outputEventSlots, m_outputEventSlotDefinitions);
 
-        int numExtendableSlots = 0;
+        [[maybe_unused]] int numExtendableSlots = 0;
         for (auto it = m_extendableSlots.begin(); it != m_extendableSlots.end(); it++)
         {
             numExtendableSlots += aznumeric_cast<int>(it->second.size());

Gems/GraphModel/Code/Source/Model/Slot.cpp

@@ -491,7 +491,7 @@ namespace GraphModel
             // multiple supported types, Slot::GetDataType() will call GetParentNode()
             // to try and resolve its type, which will be a nullptr at this point
             // because the parent won't be valid yet
-            bool valueTypeSupported = false;
+            [[maybe_unused]] bool valueTypeSupported = false;
             DataTypePtr valueDataType = GetGraphContext()->GetDataTypeForValue(m_value);
             for (DataTypePtr dataType : GetSupportedDataTypes())
             {

Gems/LyShine/Code/Editor/PropertyHandlerEntityIdComboBox.cpp

@@ -156,7 +156,7 @@ PropertyEntityIdComboBoxCtrl::PropertyEntityIdComboBoxCtrl(QWidget* pParent)
 void PropertyEntityIdComboBoxCtrl::setValue(AZ::EntityId value)
 {
     m_pComboBox->blockSignals(true);
-    bool indexWasFound = false;
+    [[maybe_unused]] bool indexWasFound = false;
     for (size_t enumValIndex = 0; enumValIndex < m_enumValues.size(); enumValIndex++)
     {
         if (m_enumValues[enumValIndex].first == value)

Gems/Multiplayer/Code/Source/NetworkEntity/EntityReplication/EntityReplicationManager.cpp

@@ -1126,7 +1126,7 @@ namespace Multiplayer
                 netBindComponent->NotifyServerMigration(GetRemoteHostId());
             }
 
-            bool didSucceed = true;
+            [[maybe_unused]] bool didSucceed = true;
             EntityMigrationMessage message;
             message.m_netEntityId = replicator->GetEntityHandle().GetNetEntityId();
             message.m_prefabEntityId = netBindComponent->GetPrefabEntityId();

Gems/NvCloth/Code/Source/Components/ClothComponentMesh/ActorClothColliders.cpp

@@ -72,8 +72,8 @@ namespace NvCloth
         // Maximum number of spheres and capsules is imposed by NvCloth library
         size_t sphereCount = 0;
         size_t capsuleCount = 0;
-        bool maxSphereCountReachedWarned = false;
-        bool maxCapsuleCountReachedWarned = false;
+        [[maybe_unused]] bool maxSphereCountReachedWarned = false;
+        [[maybe_unused]] bool maxCapsuleCountReachedWarned = false;
 
         AZStd::vector<SphereCollider> sphereColliders;
         AZStd::vector<CapsuleCollider> capsuleColliders;

Gems/PhysX/Code/Source/PhysXCharacters/Components/RagdollComponent.cpp

@@ -422,7 +422,7 @@ namespace PhysX
                     return d1.m_depth < d2.m_depth;
                 });
 
-            bool massesClamped = false;
+            [[maybe_unused]] bool massesClamped = false;
             for (const auto& nodeDepth : nodeDepths)
             {
                 const size_t nodeIndex = nodeDepth.m_index;

Gems/ScriptCanvas/Code/Editor/View/Widgets/NodePalette/ScriptEventsNodePaletteTreeItemTypes.cpp

@@ -145,7 +145,7 @@ namespace ScriptCanvasEditor
         ScriptEvents::ScriptEventsAsset* data = asset.GetAs<ScriptEvents::ScriptEventsAsset>();
         if (data)
         {
-            const ScriptEvents::ScriptEvent* previousDefinition = nullptr;
+            [[maybe_unused]] const ScriptEvents::ScriptEvent* previousDefinition = nullptr;
             ScriptEvents::ScriptEventsAsset* previousData = m_asset.GetAs<ScriptEvents::ScriptEventsAsset>();
             if (previousData)
             {

Gems/Terrain/Code/Source/TerrainRenderer/TerrainMeshManager.cpp

@@ -291,7 +291,7 @@ namespace Terrain
         modelAssetCreator.Begin(AZ::Uuid::CreateRandom());
 
         uint16_t gridSize = GridSize;
-        float gridSpacing = GridSpacing;
+        [[maybe_unused]] float gridSpacing = GridSpacing;
 
         for (uint32_t i = 0; i < AZ::RPI::ModelLodAsset::LodCountMax && gridSize > 0; ++i)
         {