1 files changed, 2 insertions, 0 deletions
diff --git a/native/jni/src/utils/char_utils.h b/native/jni/src/utils/char_utils.h
index 41663c81a..239419d5b 100644
--- a/native/jni/src/utils/char_utils.h
+++ b/native/jni/src/utils/char_utils.h
@@ -18,6 +18,7 @@
 #define LATINIME_CHAR_UTILS_H
 
 #include <cctype>
+#include <vector>
 
 #include "defines.h"
 
@@ -86,6 +87,7 @@ class CharUtils {
     }
 
     static unsigned short latin_tolower(const unsigned short c);
+    static const std::vector<int> EMPTY_STRING;
 
  private:
     DISALLOW_IMPLICIT_CONSTRUCTORS(CharUtils);