From 010cc454bc9eac974a3d50c32b77306f01175a4e Mon Sep 17 00:00:00 2001
From: michalbiesek <michal.biesek@intel.com>
Date: Thu, 4 Jun 2020 11:00:42 +0200
Subject: [PATCH] Modify ziplist resize mechanism

- instead of realloc call malloc/memcpy/free sequence
- this allows to move ziplist allocation between DRAM and PMEM
---
 src/ziplist.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/ziplist.c b/src/ziplist.c
index ef40d6aa25a..549ced36a53 100644
--- a/src/ziplist.c
+++ b/src/ziplist.c
@@ -587,7 +587,11 @@ unsigned char *ziplistNew(void) {
 
 /* Resize the ziplist. */
 unsigned char *ziplistResize(unsigned char *zl, unsigned int len) {
-    zl = zrealloc(zl,len);
+    unsigned char* znew = zmalloc(len);
+    size_t old_size = zmalloc_size(zl);
+    (len > old_size) ? memcpy(znew, zl, old_size) : memcpy(znew, zl, len);
+    zfree(zl);
+    zl = znew;
     ZIPLIST_BYTES(zl) = intrev32ifbe(len);
     zl[len-1] = ZIP_END;
     return zl;