Commit: 7608ebe44aa343f40f1d79f719097111eaa0c722
Author: Iliya Katueshenock
Date:   Thu Dec 15 19:32:30 2022 +0100
Branches: master
https://developer.blender.org/rB7608ebe44aa343f40f1d79f719097111eaa0c722

Fix: ignore unavailable sockets linked to multi-input socket

Differential Revision: https://developer.blender.org/D16784

===================================================================

M       source/blender/nodes/intern/geometry_nodes_lazy_function.cc

===================================================================

diff --git a/source/blender/nodes/intern/geometry_nodes_lazy_function.cc 
b/source/blender/nodes/intern/geometry_nodes_lazy_function.cc
index cad92cc0d90..9b89d056675 100644
--- a/source/blender/nodes/intern/geometry_nodes_lazy_function.cc
+++ b/source/blender/nodes/intern/geometry_nodes_lazy_function.cc
@@ -1141,10 +1141,11 @@ struct GeometryNodesLazyFunctionGraphBuilder {
             if (multi_input_link == link) {
               break;
             }
-            if (!(multi_input_link->is_muted() ||
-                  nodeIsDanglingReroute(&btree_, multi_input_link->fromnode))) 
{
-              link_index++;
+            if (multi_input_link->is_muted() || 
!multi_input_link->fromsock->is_available() ||
+                nodeIsDanglingReroute(&btree_, multi_input_link->fromnode)) {
+              continue;
             }
+            link_index++;
           }
           if (to_bsocket.owner_node().is_muted()) {
             if (link_index == 0) {

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