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-rw-r--r--utils/TableGen/ClangAttrEmitter.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/utils/TableGen/ClangAttrEmitter.cpp b/utils/TableGen/ClangAttrEmitter.cpp
index 463f684db9..c773e57f94 100644
--- a/utils/TableGen/ClangAttrEmitter.cpp
+++ b/utils/TableGen/ClangAttrEmitter.cpp
@@ -15,6 +15,7 @@
#include "Record.h"
#include "llvm/ADT/StringSwitch.h"
#include <algorithm>
+#include <cctype>
using namespace llvm;