commit 8efdcee02ed02cf9e51e1757441715c2479757ee
author Bram Moolenaar <Bram@vim.org> Mon Dec 19 12:18:09 2022 +0000
committer Bram Moolenaar <Bram@vim.org> Mon Dec 19 12:18:09 2022 +0000
tree c0003310ca868391507b4165d0f6e1f944ac78bf
parent c336ae3ce60a2f047b72344ac827568606c5aa15

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/vim9class.c

diff --git a/src/vim9class.c b/src/vim9class.c
index 4a97585..a91a4a5 100644
--- a/src/vim9class.c
+++ b/src/vim9class.c
@@ -164,7 +164,8 @@
     *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;
 }