1 files changed, 9 insertions, 5 deletions

diff --git a/source/blender/blenkernel/BKE_main.h b/source/blender/blenkernel/BKE_main.h
index 2c444f42c46..b741489d929 100644
--- a/source/blender/blenkernel/BKE_main.h
+++ b/source/blender/blenkernel/BKE_main.h
@@ -36,6 +36,7 @@ struct IDNameLib_Map;
 struct ImBuf;
 struct Library;
 struct MainLock;
+struct UniqueName_Map;
 
 /* Blender thumbnail, as written on file (width, height, and data as char RGBA). */
 /* We pack pixel data after that struct. */
@@ -115,25 +116,25 @@ typedef struct Main {
   uint64_t build_commit_timestamp; /* commit's timestamp from buildinfo */
   char build_hash[16];             /* hash from buildinfo */
   /** Indicate the #Main.filepath (file) is the recovered one. */
-  char recovered;
+  bool recovered;
   /** All current ID's exist in the last memfile undo step. */
-  char is_memfile_undo_written;
+  bool is_memfile_undo_written;
   /**
    * An ID needs its data to be flushed back.
    * use "needs_flush_to_id" in edit data to flag data which needs updating.
    */
-  char is_memfile_undo_flush_needed;
+  bool is_memfile_undo_flush_needed;
   /**
    * Indicates that next memfile undo step should not allow reusing old bmain when re-read, but
    * instead do a complete full re-read/update from stored memfile.
    */
-  char use_memfile_full_barrier;
+  bool use_memfile_full_barrier;
 
   /**
    * When linking, disallow creation of new data-blocks.
    * Make sure we don't do this by accident, see T76738.
    */
-  char is_locked_for_linking;
+  bool is_locked_for_linking;
 
   BlendThumbnail *blen_thumb;
 
@@ -193,6 +194,9 @@ typedef struct Main {
   /* IDMap of IDs. Currently used when reading (expanding) libraries. */
   struct IDNameLib_Map *id_map;
 
+  /* Used for efficient calculations of unique names. */
+  struct UniqueName_Map *name_map;
+
   struct MainLock *lock;
 } Main;