Cleanup: quiet ASAN warnings for divide by zero & NULL memcpy args

No functional changes as the inf value was never used &
memcpy args were only NULL when the size to copy was zero.

1 files changed, 12 insertions, 4 deletions

diff --git a/source/blender/blenkernel/intern/mesh_merge.c b/source/blender/blenkernel/intern/mesh_merge.c
index 0115a70a52a..134a1344f83 100644
--- a/source/blender/blenkernel/intern/mesh_merge.c
+++ b/source/blender/blenkernel/intern/mesh_merge.c
@@ -615,10 +615,18 @@ Mesh *BKE_mesh_merge_verts(Mesh *mesh,
   }
 
   /* Copy over data. #CustomData_add_layer can do this, need to look it up. */
-  memcpy(result->mvert, mvert, sizeof(MVert) * STACK_SIZE(mvert));
-  memcpy(result->medge, medge, sizeof(MEdge) * STACK_SIZE(medge));
-  memcpy(result->mloop, mloop, sizeof(MLoop) * STACK_SIZE(mloop));
-  memcpy(result->mpoly, mpoly, sizeof(MPoly) * STACK_SIZE(mpoly));
+  if (STACK_SIZE(mvert)) {
+    memcpy(result->mvert, mvert, sizeof(MVert) * STACK_SIZE(mvert));
+  }
+  if (STACK_SIZE(medge)) {
+    memcpy(result->medge, medge, sizeof(MEdge) * STACK_SIZE(medge));
+  }
+  if (STACK_SIZE(mloop)) {
+    memcpy(result->mloop, mloop, sizeof(MLoop) * STACK_SIZE(mloop));
+  }
+  if (STACK_SIZE(mpoly)) {
+    memcpy(result->mpoly, mpoly, sizeof(MPoly) * STACK_SIZE(mpoly));
+  }
 
   MEM_freeN(mvert);
   MEM_freeN(medge);