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-rw-r--r--clang/lib/Lex/HeaderMap.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/clang/lib/Lex/HeaderMap.cpp b/clang/lib/Lex/HeaderMap.cpp
index be3f701..e424f91 100644
--- a/clang/lib/Lex/HeaderMap.cpp
+++ b/clang/lib/Lex/HeaderMap.cpp
@@ -18,6 +18,7 @@
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/MemoryBuffer.h"
+#include <cctype>
#include <cstdio>
using namespace clang;