From 74fa4ee92bc3d4fba6b315d768d3211d2fcb2a30 Mon Sep 17 00:00:00 2001
From: Jacques Lucke <jacques@blender.org>
Date: Thu, 9 Dec 2021 13:54:34 +0100
Subject: Fix (unreported): missing null check

A crash happened when `instance_id_attribute` further down in the
function was null. This issue was probably introduced when the
id attribute starting using generic attribute handling.
---
 .../nodes/geometry/nodes/legacy/node_geo_legacy_point_instance.cc      | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'source/blender')

diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_instance.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_instance.cc
index ef35bef96aa..c8d9a6e9c7c 100644
--- a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_instance.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_point_instance.cc
@@ -173,6 +173,9 @@ static void add_instances_from_component(InstancesComponent &instances,
   const AttributeDomain domain = ATTR_DOMAIN_POINT;
 
   const int domain_size = src_geometry.attribute_domain_size(domain);
+  if (domain_size == 0) {
+    return;
+  }
 
   VArray<float3> positions = src_geometry.attribute_get_for_read<float3>(
       "position", domain, {0, 0, 0});
-- 
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