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-rw-r--r--clang/lib/Analysis/LiveVariables.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/clang/lib/Analysis/LiveVariables.cpp b/clang/lib/Analysis/LiveVariables.cpp
index ff7f3eb..d9194dd 100644
--- a/clang/lib/Analysis/LiveVariables.cpp
+++ b/clang/lib/Analysis/LiveVariables.cpp
@@ -19,6 +19,7 @@
#include "llvm/ADT/DenseMap.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
+#include <optional>
#include <vector>
using namespace clang;