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-rw-r--r--llvm/include/llvm/ADT/DenseMap.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/llvm/include/llvm/ADT/DenseMap.h b/llvm/include/llvm/ADT/DenseMap.h
index c141a6c6f46..40cf3294982 100644
--- a/llvm/include/llvm/ADT/DenseMap.h
+++ b/llvm/include/llvm/ADT/DenseMap.h
@@ -20,6 +20,7 @@
#ifndef LLVM_ADT_DENSEMAP_H
#define LLVM_ADT_DENSEMAP_H
+#include <functional>
#include <vector>
namespace llvm {
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