From ae49d1472ec176ddc53a3a4905f91d46344386e6 Mon Sep 17 00:00:00 2001
From: Mark Adler <zlib@madler.net>
Date: Thu, 12 Oct 2017 19:27:59 -0700
Subject: Avoid an undefined behavior of memcpy() in gzappend().

---
 examples/gzappend.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'examples')

diff --git a/examples/gzappend.c b/examples/gzappend.c
index 662dec3..d7eea3e 100644
--- a/examples/gzappend.c
+++ b/examples/gzappend.c
@@ -137,7 +137,7 @@ local void rotate(unsigned char *list, unsigned len, unsigned rot)
     /* do simple left shift by one */
     if (rot == 1) {
         tmp = *list;
-        memcpy(list, list + 1, len - 1);
+        memmove(list, list + 1, len - 1);
         *last = tmp;
         return;
     }
-- 
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