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-rw-r--r--src/passes/ExtractFunction.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/passes/ExtractFunction.cpp b/src/passes/ExtractFunction.cpp
index 0c0c1477e..0939ebe28 100644
--- a/src/passes/ExtractFunction.cpp
+++ b/src/passes/ExtractFunction.cpp
@@ -20,6 +20,8 @@
// This pass will run --remove-unused-module-elements automatically for you, in
// order to remove as many things as possible.
+#include <cctype>
+
#include "pass.h"
#include "wasm-builder.h"
#include "wasm.h"