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-rw-r--r--examples/Kaleidoscope/Chapter3/toy.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/examples/Kaleidoscope/Chapter3/toy.cpp b/examples/Kaleidoscope/Chapter3/toy.cpp
index 48cfbe6dec..0fb64e3a54 100644
--- a/examples/Kaleidoscope/Chapter3/toy.cpp
+++ b/examples/Kaleidoscope/Chapter3/toy.cpp
@@ -3,6 +3,7 @@
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
+#include <cctype>
#include <cstdio>
#include <map>
#include <string>