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-rw-r--r--clang/lib/Tooling/Refactoring/Extract/Extract.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/clang/lib/Tooling/Refactoring/Extract/Extract.cpp b/clang/lib/Tooling/Refactoring/Extract/Extract.cpp
index 402b56109052..efd29fc75c82 100644
--- a/clang/lib/Tooling/Refactoring/Extract/Extract.cpp
+++ b/clang/lib/Tooling/Refactoring/Extract/Extract.cpp
@@ -19,6 +19,7 @@
#include "clang/AST/ExprObjC.h"
#include "clang/Rewrite/Core/Rewriter.h"
#include "clang/Tooling/Refactoring/Extract/SourceExtraction.h"
+#include <optional>
namespace clang {
namespace tooling {