Fix T73472: Crash in override code on dirty pose bone pointers.

Usual issue from those dear Bone pointers in pose data...

Note that this is more like minimal-risk, quick fix, it's nothing like
'nice to have' code. Think proper solution would be to refactor handling
of those kind of 'caches' to ensure they are valid/up-to-date in a much
easier way, at the very least.

Ideal solution being to get fully rid of those horrors, of course, but
let's not dream here. ;)

1 files changed, 35 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/library_override.c b/source/blender/blenkernel/intern/library_override.c
index 2e958c8a578..a8cc37973f2 100644
--- a/source/blender/blenkernel/intern/library_override.c
+++ b/source/blender/blenkernel/intern/library_override.c
@@ -30,6 +30,8 @@
 #include "DNA_object_types.h"
 
 #include "DEG_depsgraph.h"
+
+#include "BKE_armature.h"
 #include "BKE_library.h"
 #include "BKE_library_override.h"
 #include "BKE_library_remap.h"
@@ -579,6 +581,17 @@ bool BKE_override_library_status_check_local(Main *bmain, ID *local)
 
   BLI_assert(GS(local->name) == GS(reference->name));
 
+  if (GS(local->name) == ID_OB) {
+    /* Our beloved pose's bone cross-data pointers... Usually, depsgraph evaluation would ensure
+     * this is valid, but in some cases (like hidden collections etc.) this won't be the case, so
+     * we need to take care of this ourselves. */
+    Object *ob_local = (Object *)local;
+    if (ob_local->data != NULL && ob_local->type == OB_ARMATURE && ob_local->pose != NULL &&
+        ob_local->pose->flag & POSE_RECALC) {
+      BKE_pose_rebuild(bmain, ob_local, ob_local->data, true);
+    }
+  }
+
   /* Note that reference is assumed always valid, caller has to ensure that itself. */
 
   PointerRNA rnaptr_local, rnaptr_reference;
@@ -633,6 +646,17 @@ bool BKE_override_library_status_check_reference(Main *bmain, ID *local)
     }
   }
 
+  if (GS(local->name) == ID_OB) {
+    /* Our beloved pose's bone cross-data pointers... Usually, depsgraph evaluation would ensure
+     * this is valid, but in some cases (like hidden collections etc.) this won't be the case, so
+     * we need to take care of this ourselves. */
+    Object *ob_local = (Object *)local;
+    if (ob_local->data != NULL && ob_local->type == OB_ARMATURE && ob_local->pose != NULL &&
+        ob_local->pose->flag & POSE_RECALC) {
+      BKE_pose_rebuild(bmain, ob_local, ob_local->data, true);
+    }
+  }
+
   PointerRNA rnaptr_local, rnaptr_reference;
   RNA_id_pointer_create(local, &rnaptr_local);
   RNA_id_pointer_create(reference, &rnaptr_reference);
@@ -678,6 +702,17 @@ bool BKE_override_library_operations_create(Main *bmain, ID *local, const bool f
       return ret;
     }
 
+    if (GS(local->name) == ID_OB) {
+      /* Our beloved pose's bone cross-data pointers... Usually, depsgraph evaluation would ensure
+       * this is valid, but in some cases (like hidden collections etc.) this won't be the case, so
+       * we need to take care of this ourselves. */
+      Object *ob_local = (Object *)local;
+      if (ob_local->data != NULL && ob_local->type == OB_ARMATURE && ob_local->pose != NULL &&
+          ob_local->pose->flag & POSE_RECALC) {
+        BKE_pose_rebuild(bmain, ob_local, ob_local->data, true);
+      }
+    }
+
     PointerRNA rnaptr_local, rnaptr_reference;
     RNA_id_pointer_create(local, &rnaptr_local);
     RNA_id_pointer_create(local->override_library->reference, &rnaptr_reference);