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-rw-r--r--lib/Frontend/TextDiagnostic.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/Frontend/TextDiagnostic.cpp b/lib/Frontend/TextDiagnostic.cpp
index 302621a901..9bb3e1dce8 100644
--- a/lib/Frontend/TextDiagnostic.cpp
+++ b/lib/Frontend/TextDiagnostic.cpp
@@ -20,6 +20,7 @@
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
#include <algorithm>
+#include <cctype>
using namespace clang;