Object: improve on fix for Object.to_mesh() crash T86871

While fa7ddd0f43ea15dd19d81e7808de2bfe8cfc89ee fixed the reported issue,
the possibility of reusing runtime data during curve-to-mesh conversion
remained. Instead of treating the bounding-box as a special case,
clear all run-time data for temporary objects.

Ref D11026

Reviewed By: sergey

1 files changed, 11 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/object.c b/source/blender/blenkernel/intern/object.c
index 82d99e980a4..912bd5a4d69 100644
--- a/source/blender/blenkernel/intern/object.c
+++ b/source/blender/blenkernel/intern/object.c
@@ -5114,6 +5114,17 @@ void BKE_object_runtime_reset_on_copy(Object *object, const int UNUSED(flag))
 }
 
 /**
+ * The function frees memory used by the runtime data, but not the runtime field itself.
+ *
+ * The caller is expected to run #BKE_object_runtime_reset if the struct will be used again.
+ */
+void BKE_object_runtime_free(Object *object)
+{
+  /* Currently this is all that's needed. */
+  BKE_object_free_derived_caches(object);
+}
+
+/**
  * Find an associated armature object.
  */
 static Object *obrel_armature_find(Object *ob)