From db446278134e6eb20dc6e4aa86370aad0916386a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=86=B7=E9=92=A6=E8=A1=97?= <15390014138@163.com>
Date: Fri, 1 Jan 2021 09:03:33 +0800
Subject: [PATCH] update ability/sbuf/src/hdf_sbuf.c.

---
 ability/sbuf/src/hdf_sbuf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ability/sbuf/src/hdf_sbuf.c b/ability/sbuf/src/hdf_sbuf.c
index 0c2e1c50c..8f740bc1d 100755
--- a/ability/sbuf/src/hdf_sbuf.c
+++ b/ability/sbuf/src/hdf_sbuf.c
@@ -425,7 +425,7 @@ struct HdfSBuf *HdfSBufCopy(const struct HdfSBuf *sbuf)
     new->capacity = sbuf->capacity;
     new->readPos = 0;
     new->writePos = sbuf->writePos;
-    if (memcpy_s(new->data, new->capacity, sbuf->data, sbuf->capacity) != EOK) {
+    if (memcpy_s(new->data, new->capacity, sbuf->data, sbuf->writePos) != EOK) {
         HdfSBufRecycle(new);
         return NULL;
     }
-- 
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