1 files changed, 7 insertions, 2 deletions
diff --git a/source/blender/makesdna/DNA_ID.h b/source/blender/makesdna/DNA_ID.h
index 4f479abe2b0..cfee35e147a 100644
--- a/source/blender/makesdna/DNA_ID.h
+++ b/source/blender/makesdna/DNA_ID.h
@@ -310,6 +310,13 @@ typedef struct IDOverrideLibrary {
   /** List of IDOverrideLibraryProperty structs. */
   ListBase properties;
 
+  /** Override hierarchy root ID. Usually the actual root of the hierarchy, but not always
+   * in degenerated cases.
+   *
+   * All liboverrides of a same hierarchy (e.g. a character collection) share the same root.
+   */
+  struct ID *hierarchy_root;
+
   /* Read/write data. */
   /* Temp ID storing extra override data (used for differential operations only currently).
    * Always NULL outside of read/write context. */
@@ -317,8 +324,6 @@ typedef struct IDOverrideLibrary {
 
   IDOverrideLibraryRuntime *runtime;
 
-  void *_pad_0;
-
   unsigned int flag;
   char _pad_1[4];
 } IDOverrideLibrary;