From 730592df19f3d41f2c8db750bd6aa5675fc0319f Mon Sep 17 00:00:00 2001
From: Bernard Xiong <bernard.xiong@gmail.com>
Date: Thu, 24 Sep 2015 21:07:54 +0800
Subject: [PATCH] [Kernel] mark the free mem block with HEAP_MAGIC.

---
 src/mem.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/mem.c b/src/mem.c
index 004de01d9..c45059c5c 100644
--- a/src/mem.c
+++ b/src/mem.c
@@ -304,6 +304,7 @@ void *rt_malloc(rt_size_t size)
 
                 /* create mem2 struct */
                 mem2       = (struct heap_mem *)&heap_ptr[ptr2];
+                mem2->magic = HEAP_MAGIC;
                 mem2->used = 0;
                 mem2->next = mem->next;
                 mem2->prev = ptr;
@@ -540,7 +541,7 @@ void rt_free(void *rmem)
     RT_ASSERT(mem->magic == HEAP_MAGIC);
     /* ... and is now unused. */
     mem->used  = 0;
-    mem->magic = 0;
+    mem->magic = HEAP_MAGIC;
 
     if (mem < lfree)
     {
-- 
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