diff --git a/clang/lib/Sema/Sema.cpp b/clang/lib/Sema/Sema.cpp
index 077bb0a..d7a05e7 100644
--- a/clang/lib/Sema/Sema.cpp
+++ b/clang/lib/Sema/Sema.cpp
@@ -158,6 +158,7 @@
       ThreadSafetyDeclCache(nullptr), VarDataSharingAttributesStack(nullptr),
       CurScope(nullptr), Ident_super(nullptr), Ident___float128(nullptr) {
   TUScope = nullptr;
+  isConstantEvaluatedOverride = false;
 
   LoadedExternalKnownNamespaces = false;
   for (unsigned I = 0; I != NSAPI::NumNSNumberLiteralMethods; ++I)