diff --git a/extensions/spine/Skeleton.cpp b/extensions/spine/Skeleton.cpp
index 2098860dc5..003d34adf8 100644
--- a/extensions/spine/Skeleton.cpp
+++ b/extensions/spine/Skeleton.cpp
@@ -58,7 +58,7 @@ Skeleton* Skeleton_create (SkeletonData* data) {
 		SlotData *slotData = data->slots[i];
 
 		/* Find bone for the slotData's boneData. */
-		Bone *bone;
+		Bone *bone = NULL;
 		for (ii = 0; ii < self->boneCount; ++ii) {
 			if (data->bones[ii] == slotData->boneData) {
 				bone = self->bones[ii];
diff --git a/extensions/spine/extension.cpp b/extensions/spine/extension.cpp
index 5cf307540c..8d6ef8f62f 100644
--- a/extensions/spine/extension.cpp
+++ b/extensions/spine/extension.cpp
@@ -59,8 +59,9 @@ char* _readFile (const char* path, int* length) {
 	fseek(file, 0, SEEK_SET);
 
 	char* data = MALLOC(char, *length);
-	fread(data, 1, *length, file);
+	int rtn = fread(data, 1, *length, file);
 	fclose(file);
+	if (rtn != *length) return 0;
 
 	return data;
 }
diff --git a/scripting/lua/cocos2dx_support/Cocos2dxLuaLoader.cpp b/scripting/lua/cocos2dx_support/Cocos2dxLuaLoader.cpp
index 5f192490aa..812c813d1e 100644
--- a/scripting/lua/cocos2dx_support/Cocos2dxLuaLoader.cpp
+++ b/scripting/lua/cocos2dx_support/Cocos2dxLuaLoader.cpp
@@ -32,7 +32,7 @@ extern "C"
     int cocos2dx_lua_loader(lua_State *L)
     {
         std::string filename(luaL_checkstring(L, 1));
-        int pos = filename.rfind(".lua");
+        size_t pos = filename.rfind(".lua");
         if (pos != std::string::npos)
         {
             filename = filename.substr(0, pos);