From 5eae404fc464674870a73b607a5bdcd8665be27e Mon Sep 17 00:00:00 2001
From: Teddy <ted.sybil@gmail.com>
Date: Fri, 9 Aug 2013 20:11:39 +0800
Subject: forget to return in `str_to_lower`

---
 parser.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/parser.cpp b/parser.cpp
index a00f3f4..b27a8dc 100644
--- a/parser.cpp
+++ b/parser.cpp
@@ -48,6 +48,7 @@ string str_to_lower(string str) {
     for (size_t i = 0; i < len; i++)
         if ('A' <= str[i] && str[i] <= 'Z')
             str[i] -= 'A' - 'a';
+    return str;
 }
 
 bool Tokenizor::get_token(string &ret) {
-- 
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