From 46c2874500d38cce858266ef67cfe8cf7f08ace7 Mon Sep 17 00:00:00 2001
From: Wang Renxin <hellotony521@qq.com>
Date: Wed, 19 Apr 2017 20:21:04 +0800
Subject: [PATCH] *improved argument checking.

---
 core/my_basic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/my_basic.c b/core/my_basic.c
index 7d6439a..4a3fff9 100755
--- a/core/my_basic.c
+++ b/core/my_basic.c
@@ -12345,7 +12345,7 @@ _exit:
 int mb_init_coll(struct mb_interpreter_t* s, void** l, mb_value_t* coll) {
 	int result = MB_FUNC_OK;
 
-	if(!s) {
+	if(!s || !coll) {
 		result = MB_FUNC_ERR;
 
 		goto _exit;