Index: clang/include/clang/Analysis/CallGraph.h
===================================================================
--- clang/include/clang/Analysis/CallGraph.h
+++ clang/include/clang/Analysis/CallGraph.h
@@ -60,7 +60,7 @@
   ///
   /// Recursively walks the declaration to find all the dependent Decls as well.
   void addToCallGraph(Decl *D) {
-    TraverseDecl(D);
+    (void)TraverseDecl(D);
   }
 
   /// Determine if a declaration should be included in the graph.
Index: clang/lib/CodeGen/CGStmt.cpp
===================================================================
--- clang/lib/CodeGen/CGStmt.cpp
+++ clang/lib/CodeGen/CGStmt.cpp
@@ -2213,7 +2213,7 @@
   if (!Info.allowsRegister() && !Info.allowsMemory()) {
     if (Info.requiresImmediateConstant()) {
       Expr::EvalResult EVResult;
-      InputExpr->EvaluateAsRValue(EVResult, getContext(), true);
+      InputExpr->(void)EvaluateAsRValue(EVResult, getContext(), true);
 
       llvm::APSInt IntResult;
       if (EVResult.Val.toIntegralConstant(IntResult, InputExpr->getType(),
Index: clang/lib/Parse/Parser.cpp
===================================================================
--- clang/lib/Parse/Parser.cpp
+++ clang/lib/Parse/Parser.cpp
@@ -1603,7 +1603,7 @@
     // Otherwise recover by skipping to next semi or mandatory function body.
     if (SkipUntil(tok::l_brace, StopAtSemi | StopBeforeMatch))
       break;
-    TryConsumeToken(tok::semi);
+    (void)TryConsumeToken(tok::semi);
   }
 
   // The actions module must verify that all arguments were declared.
Index: clang/lib/Sema/SemaChecking.cpp
===================================================================
--- clang/lib/Sema/SemaChecking.cpp
+++ clang/lib/Sema/SemaChecking.cpp
@@ -4590,7 +4590,7 @@
         }
 
         // Convert features like "zbr" and "experimental-zbr" to "Zbr".
-        OF.consume_front("experimental-");
+        OF.(void)consume_front("experimental-");
         std::string FeatureStr = OF.str();
         FeatureStr[0] = std::toupper(FeatureStr[0]);
         // Combine strings.
Index: clang/lib/Sema/SemaExpr.cpp
===================================================================
--- clang/lib/Sema/SemaExpr.cpp
+++ clang/lib/Sema/SemaExpr.cpp
@@ -6033,7 +6033,7 @@
     // point where the enclosing initializer is used in a function call.
     ImmediateCallVisitor V;
     if (!NestedDefaultChecking)
-      V.TraverseDecl(Param);
+      V.(void)TraverseDecl(Param);
     if (V.HasImmediateCalls) {
       ExprEvalContexts.back().DelayedDefaultInitializationContext = {
           CallLoc, Param, CurContext};