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/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;