1 files changed, 3 insertions, 2 deletions
diff --git a/clang/lib/StaticAnalyzer/Checkers/VforkChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/VforkChecker.cpp
index 04e6603b4cbe..86a4e6fbcd6a 100644
--- a/clang/lib/StaticAnalyzer/Checkers/VforkChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/VforkChecker.cpp
@@ -35,6 +35,7 @@
 #include "clang/StaticAnalyzer/Core/Checker.h"
 #include "clang/StaticAnalyzer/Core/CheckerManager.h"
 #include "clang/AST/ParentMap.h"
+#include <optional>
 
 using namespace clang;
 using namespace ento;
@@ -154,8 +155,8 @@ void VforkChecker::checkPostCall(const CallEvent &Call,
 
   // Get return value of vfork.
   SVal VforkRetVal = Call.getReturnValue();
-  Optional<DefinedOrUnknownSVal> DVal =
-    VforkRetVal.getAs<DefinedOrUnknownSVal>();
+  std::optional<DefinedOrUnknownSVal> DVal =
+      VforkRetVal.getAs<DefinedOrUnknownSVal>();
   if (!DVal)
     return;