1 files changed, 3 insertions, 0 deletions
diff --git a/src/support/string.h b/src/support/string.h
index 751efdac5..6fe3faf60 100644
--- a/src/support/string.h
+++ b/src/support/string.h
@@ -24,6 +24,7 @@
 #include "support/utilities.h"
 #include <algorithm>
 #include <cctype>
+#include <ostream>
 #include <string>
 #include <vector>
 
@@ -152,6 +153,8 @@ inline bool isNumber(const std::string& str) {
   return !str.empty() && std::all_of(str.begin(), str.end(), ::isdigit);
 }
 
+std::ostream& printEscaped(std::ostream& os, std::string_view str);
+
 } // namespace wasm::String
 
 #endif // wasm_support_string_h