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-rw-r--r--tools/driver/driver.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/driver/driver.cpp b/tools/driver/driver.cpp
index 594b07bd2c..e3797d4495 100644
--- a/tools/driver/driver.cpp
+++ b/tools/driver/driver.cpp
@@ -35,6 +35,7 @@
#include "llvm/Support/Program.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/system_error.h"
+#include <cctype>
using namespace clang;
using namespace clang::driver;