diff --git a/IDEHelper/Compiler/BfExprEvaluator.cpp b/IDEHelper/Compiler/BfExprEvaluator.cpp
index e676c988..fb93293f 100644
--- a/IDEHelper/Compiler/BfExprEvaluator.cpp
+++ b/IDEHelper/Compiler/BfExprEvaluator.cpp
@@ -2582,6 +2582,7 @@ void BfExprEvaluator::Visit(BfTypeReference* typeRef)
 void BfExprEvaluator::Visit(BfAttributedExpression* attribExpr)
 {
 	BfAttributeState attributeState;
+	attributeState.mSrc = attribExpr->mAttributes;
 	attributeState.mTarget = (BfAttributeTargets)(BfAttributeTargets_Invocation | BfAttributeTargets_MemberAccess);	
 	if (auto block = BfNodeDynCast<BfBlock>(attribExpr->mExpression))	
 		attributeState.mTarget = BfAttributeTargets_Block;	
@@ -2606,10 +2607,7 @@ void BfExprEvaluator::Visit(BfAttributedExpression* attribExpr)
 		VisitChild(attribExpr->mExpression);
 	}
 
-	if (!attributeState.mUsed)
-	{
-		mModule->Fail("Unused attributes", attribExpr->mAttributes);
-	}
+	mModule->FinishAttributeState(&attributeState);	
 }
 
 void BfExprEvaluator::Visit(BfBlock* blockExpr)
@@ -13769,6 +13767,10 @@ void BfExprEvaluator::InjectMixin(BfAstNode* targetSrc, BfTypedValue target, boo
 				{
 					//TODO: Implement
 				}
+				else if (newLocalVar->mResolvedType->IsValuelessType())
+				{
+					// Do nothing
+				}
 				else
 				{
 					BfIRValue value = newLocalVar->mValue;
@@ -14682,10 +14684,8 @@ void BfExprEvaluator::DoInvocation(BfAstNode* target, BfMethodBoundExpression* m
 	mResult = MatchMethod(methodNodeSrc, methodBoundExpr, thisValue, allowImplicitThis, bypassVirtual, targetFunctionName, argValues, methodGenericArguments, checkedKind);		
 	argValues.HandleFixits(mModule);
 
-	if ((mModule->mAttributeState == &attributeState) && (!attributeState.mUsed))
-	{
-		mModule->Fail("Unused attributes", attributeState.mSrc);
-	}
+	if (mModule->mAttributeState == &attributeState)
+		mModule->FinishAttributeState(&attributeState);		
 
 	if (isCascade)
 	{
diff --git a/IDEHelper/Compiler/BfModule.cpp b/IDEHelper/Compiler/BfModule.cpp
index d705633d..7d897241 100644
--- a/IDEHelper/Compiler/BfModule.cpp
+++ b/IDEHelper/Compiler/BfModule.cpp
@@ -10544,6 +10544,12 @@ BfCustomAttributes* BfModule::GetCustomAttributes(BfAttributeDirective* attribut
 	return customAttributes;
 }
 
+void BfModule::FinishAttributeState(BfAttributeState* attributeState)
+{
+	if ((!attributeState->mUsed) && (attributeState->mSrc != NULL))
+		Warn(0, "Unused attributes", attributeState->mSrc);
+}
+
 void BfModule::ProcessTypeInstCustomAttributes(bool& isPacked, bool& isUnion, bool& isCRepr, bool& isOrdered)
 {
 	if (mCurTypeInstance->mCustomAttributes != NULL)
diff --git a/IDEHelper/Compiler/BfModule.h b/IDEHelper/Compiler/BfModule.h
index f505c1db..187e9d2e 100644
--- a/IDEHelper/Compiler/BfModule.h
+++ b/IDEHelper/Compiler/BfModule.h
@@ -1466,6 +1466,7 @@ public:
 	void ValidateCustomAttributes(BfCustomAttributes* customAttributes, BfAttributeTargets attrTarget);
 	void GetCustomAttributes(BfCustomAttributes* customAttributes, BfAttributeDirective* attributesDirective, BfAttributeTargets attrType, bool allowNonConstArgs = false, BfCaptureInfo* captureInfo = NULL);
 	BfCustomAttributes* GetCustomAttributes(BfAttributeDirective* attributesDirective, BfAttributeTargets attrType, bool allowNonConstArgs = false, BfCaptureInfo* captureInfo = NULL);
+	void FinishAttributeState(BfAttributeState* attributeState);
 	void ProcessTypeInstCustomAttributes(bool& isPacked, bool& isUnion, bool& isCRepr, bool& isOrdered);
 	void ProcessCustomAttributeData();	
 	bool TryGetConstString(BfIRConstHolder* constHolder, BfIRValue irValue, StringImpl& str);
diff --git a/IDEHelper/Compiler/BfStmtEvaluator.cpp b/IDEHelper/Compiler/BfStmtEvaluator.cpp
index c7ba8d76..6d80c58d 100644
--- a/IDEHelper/Compiler/BfStmtEvaluator.cpp
+++ b/IDEHelper/Compiler/BfStmtEvaluator.cpp
@@ -3760,7 +3760,7 @@ void BfModule::Visit(BfLocalMethodDeclaration* methodDecl)
 void BfModule::Visit(BfAttributedStatement* attribStmt)
 {
 	BfAttributeState attributeState;
-
+	attributeState.mSrc = attribStmt->mAttributes;
 	attributeState.mTarget = (BfAttributeTargets)(BfAttributeTargets_Invocation | BfAttributeTargets_MemberAccess);
 	if (auto block = BfNodeDynCast<BfBlock>(attribStmt->mStatement))
 		attributeState.mTarget = BfAttributeTargets_Block;
@@ -3786,10 +3786,7 @@ void BfModule::Visit(BfAttributedStatement* attribStmt)
 		VisitChild(attribStmt->mStatement);
 	}
 
-	if (!attributeState.mUsed)
-	{
-		Fail("Unused attributes", attribStmt->mAttributes);
-	}
+	FinishAttributeState(&attributeState);	
 }
 
 void BfModule::Visit(BfExpression* expression)