From 318fc25535c86ff4c8e9effb797b5f180f3fdd8d Mon Sep 17 00:00:00 2001
From: Sukchan Lee <acetcom@gmail.com>
Date: Fri, 1 Jul 2022 21:49:31 +0900
Subject: [PATCH] [CORE] Added memory check (#1638)

---
 lib/core/ogs-pkbuf.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/core/ogs-pkbuf.c b/lib/core/ogs-pkbuf.c
index ba442e583..e73892c76 100644
--- a/lib/core/ogs-pkbuf.c
+++ b/lib/core/ogs-pkbuf.c
@@ -297,8 +297,10 @@ ogs_pkbuf_t *ogs_pkbuf_copy_debug(ogs_pkbuf_t *pkbuf, const char *file_line)
 {
 #if OGS_USE_TALLOC
     ogs_pkbuf_t *newbuf;
-    int size = pkbuf->end - pkbuf->head;
+    int size = 0;
 
+    ogs_assert(pkbuf);
+    size = pkbuf->end - pkbuf->head;
     ogs_assert(size > 0);
     newbuf = ogs_pkbuf_alloc_debug(NULL, size, file_line);
     if (!newbuf) {