diff --git a/include/rapidjson/encodings.h b/include/rapidjson/encodings.h
index fa9979e..bc3cd81 100644
--- a/include/rapidjson/encodings.h
+++ b/include/rapidjson/encodings.h
@@ -616,22 +616,6 @@ struct Transcoder<Encoding, Encoding> {
     }
 };
 
-//! Returns number of code points in a encoded string.
-template<typename Encoding>
-bool CountStringCodePoint(const typename Encoding::Ch* s, SizeType length, SizeType* outCount) {
-    GenericStringStream<Encoding> is(s);
-    const typename Encoding::Ch* end = s + length;
-    SizeType count = 0;
-    while (is.src_ < end) {
-        unsigned codepoint;
-        if (!Encoding::Decode(is, &codepoint))
-            return false;
-        count++;
-    }
-    *outCount = count;
-    return true;
-}
-
 RAPIDJSON_NAMESPACE_END
 
 #if defined(__GNUC__) || defined(_MSV_VER)
diff --git a/include/rapidjson/internal/strfunc.h b/include/rapidjson/internal/strfunc.h
index f6c99db..040ca1e 100644
--- a/include/rapidjson/internal/strfunc.h
+++ b/include/rapidjson/internal/strfunc.h
@@ -33,6 +33,22 @@ inline SizeType StrLen(const Ch* s) {
     return SizeType(p - s);
 }
 
+//! Returns number of code points in a encoded string.
+template<typename Encoding>
+bool CountStringCodePoint(const typename Encoding::Ch* s, SizeType length, SizeType* outCount) {
+    GenericStringStream<Encoding> is(s);
+    const typename Encoding::Ch* end = s + length;
+    SizeType count = 0;
+    while (is.src_ < end) {
+        unsigned codepoint;
+        if (!Encoding::Decode(is, &codepoint))
+            return false;
+        count++;
+    }
+    *outCount = count;
+    return true;
+}
+
 } // namespace internal
 RAPIDJSON_NAMESPACE_END
 
diff --git a/include/rapidjson/schema.h b/include/rapidjson/schema.h
index 3871e5c..7521962 100644
--- a/include/rapidjson/schema.h
+++ b/include/rapidjson/schema.h
@@ -306,6 +306,7 @@ public:
 #if RAPIDJSON_SCHEMA_HAS_REGEX
         delete [] patternProperties_;
 #endif
+        delete additionalItemsSchema_;
         delete itemsList_;
         for (SizeType i = 0; i < itemsTupleCount_; i++)
             delete itemsTuple_[i];
@@ -431,7 +432,7 @@ public:
         //    return false;
         if (minLength_ != 0 || maxLength_ != SizeType(~0)) {
             SizeType count;
-            if (CountStringCodePoint<Encoding>(str, length, &count) && (count < minLength_ || count > maxLength_))
+            if (internal::CountStringCodePoint<Encoding>(str, length, &count) && (count < minLength_ || count > maxLength_))
                 return false;
         }
 
diff --git a/test/unittest/CMakeLists.txt b/test/unittest/CMakeLists.txt
index cd69a76..61696d5 100644
--- a/test/unittest/CMakeLists.txt
+++ b/test/unittest/CMakeLists.txt
@@ -13,6 +13,7 @@ set(UNITTEST_SOURCES
     readertest.cpp
 	schematest.cpp
 	simdtest.cpp
+    strfunctest.cpp
     stringbuffertest.cpp
     strtodtest.cpp
     unittest.cpp
diff --git a/test/unittest/encodingstest.cpp b/test/unittest/encodingstest.cpp
index f3e90d2..b697d91 100644
--- a/test/unittest/encodingstest.cpp
+++ b/test/unittest/encodingstest.cpp
@@ -424,14 +424,3 @@ TEST(EncodingsTest, UTF32) {
         }
     }
 }
-
-TEST(EncodingsTest, CountStringCodePoint) {
-    SizeType count;
-    EXPECT_TRUE(CountStringCodePoint<UTF8<> >("", 0, &count));
-    EXPECT_EQ(0u, count);
-    EXPECT_TRUE(CountStringCodePoint<UTF8<> >("Hello", 5, &count));
-    EXPECT_EQ(5u, count);
-    EXPECT_TRUE(CountStringCodePoint<UTF8<> >("\xC2\xA2\xE2\x82\xAC\xF0\x9D\x84\x9E", 9, &count)); // cents euro G-clef
-    EXPECT_EQ(3u, count);
-    EXPECT_FALSE(CountStringCodePoint<UTF8<> >("\xC2\xA2\xE2\x82\xAC\xF0\x9D\x84\x9E\x80", 10, &count));
-}
diff --git a/test/unittest/strfunctest.cpp b/test/unittest/strfunctest.cpp
new file mode 100644
index 0000000..3e1a1ce
--- /dev/null
+++ b/test/unittest/strfunctest.cpp
@@ -0,0 +1,31 @@
+// Tencent is pleased to support the open source community by making RapidJSON available.
+// 
+// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved.
+//
+// Licensed under the MIT License (the "License"); you may not use this file except
+// in compliance with the License. You may obtain a copy of the License at
+//
+// http://opensource.org/licenses/MIT
+//
+// Unless required by applicable law or agreed to in writing, software distributed 
+// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR 
+// CONDITIONS OF ANY KIND, either express or implied. See the License for the 
+// specific language governing permissions and limitations under the License.
+
+#include "unittest.h"
+
+#include "rapidjson/internal/strfunc.h"
+
+using namespace rapidjson;
+using namespace rapidjson::internal;
+
+TEST(StrFunc, CountStringCodePoint) {
+    SizeType count;
+    EXPECT_TRUE(CountStringCodePoint<UTF8<> >("", 0, &count));
+    EXPECT_EQ(0u, count);
+    EXPECT_TRUE(CountStringCodePoint<UTF8<> >("Hello", 5, &count));
+    EXPECT_EQ(5u, count);
+    EXPECT_TRUE(CountStringCodePoint<UTF8<> >("\xC2\xA2\xE2\x82\xAC\xF0\x9D\x84\x9E", 9, &count)); // cents euro G-clef
+    EXPECT_EQ(3u, count);
+    EXPECT_FALSE(CountStringCodePoint<UTF8<> >("\xC2\xA2\xE2\x82\xAC\xF0\x9D\x84\x9E\x80", 10, &count));
+}
\ No newline at end of file