From 1db918f94826ff65e2530a5f9bc3ef859b5b585d Mon Sep 17 00:00:00 2001
From: Hans Goudey <h.goudey@me.com>
Date: Thu, 13 Apr 2023 09:21:10 -0400
Subject: [PATCH] Fix #106901: Dangling pointer after freeing mesh runtime data

This lead to a double-free when deleting the mesh runtime
struct after explicitly clearing the derived caches separately.
---
 source/blender/blenkernel/intern/mesh_runtime.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/source/blender/blenkernel/intern/mesh_runtime.cc b/source/blender/blenkernel/intern/mesh_runtime.cc
index 85c391503b6..7935b6d692b 100644
--- a/source/blender/blenkernel/intern/mesh_runtime.cc
+++ b/source/blender/blenkernel/intern/mesh_runtime.cc
@@ -224,6 +224,7 @@ void BKE_mesh_runtime_clear_geometry(Mesh *mesh)
   mesh->runtime->subsurf_optimal_display_edges.clear_and_shrink();
   if (mesh->runtime->shrinkwrap_data) {
     BKE_shrinkwrap_boundary_data_free(mesh->runtime->shrinkwrap_data);
+    mesh->runtime->shrinkwrap_data = nullptr;
   }
 }