From 8efdcee02ed02cf9e51e1757441715c2479757ee Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Mon, 19 Dec 2022 12:18:09 +0000
Subject: [PATCH] patch 9.0.1076: ASAN complains about NULL argument

Problem:    ASAN complains about NULL argument.
Solution:   Skip memmove() when there is nothing to move.
---
 src/version.c   | 2 ++
 src/vim9class.c | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/version.c b/src/version.c
index a734f555d07b3..f1a34b5e4673e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1076,
 /**/
     1075,
 /**/
diff --git a/src/vim9class.c b/src/vim9class.c
index 4a975858190a5..a91a4a5d5c92d 100644
--- a/src/vim9class.c
+++ b/src/vim9class.c
@@ -164,7 +164,8 @@ add_members_to_class(
     *members = gap->ga_len == 0 ? NULL : ALLOC_MULT(ocmember_T, gap->ga_len);
     if (gap->ga_len > 0 && *members == NULL)
 	return FAIL;
-    mch_memmove(*members, gap->ga_data, sizeof(ocmember_T) * gap->ga_len);
+    if (gap->ga_len > 0)
+	mch_memmove(*members, gap->ga_data, sizeof(ocmember_T) * gap->ga_len);
     VIM_CLEAR(gap->ga_data);
     return OK;
 }