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-rw-r--r--clang/lib/AST/JSONNodeDumper.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/clang/lib/AST/JSONNodeDumper.cpp b/clang/lib/AST/JSONNodeDumper.cpp
index d174919..9ca1d2b 100644
--- a/clang/lib/AST/JSONNodeDumper.cpp
+++ b/clang/lib/AST/JSONNodeDumper.cpp
@@ -3,6 +3,7 @@
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/Specifiers.h"
#include "clang/Lex/Lexer.h"
+#include <optional>
using namespace clang;