LibOverrides: Tweak to ensure no overrides can be created on linked data.

Was already mostly the case, but from RNA API there was no proper check.

2 files changed, 6 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/lib_override.c b/source/blender/blenkernel/intern/lib_override.c
index 922c1beda38..6a0f3bb5611 100644
--- a/source/blender/blenkernel/intern/lib_override.c
+++ b/source/blender/blenkernel/intern/lib_override.c
@@ -2854,6 +2854,7 @@ bool BKE_lib_override_library_status_check_reference(Main *bmain, ID *local)
 
 bool BKE_lib_override_library_operations_create(Main *bmain, ID *local)
 {
+  BLI_assert(!ID_IS_LINKED(local));
   BLI_assert(local->override_library != NULL);
   const bool is_template = (local->override_library->reference == NULL);
   bool created = false;
diff --git a/source/blender/makesrna/intern/rna_ID.c b/source/blender/makesrna/intern/rna_ID.c
index 94ffa330064..a9725da7841 100644
--- a/source/blender/makesrna/intern/rna_ID.c
+++ b/source/blender/makesrna/intern/rna_ID.c
@@ -744,6 +744,11 @@ static void rna_ID_override_library_operations_update(ID *id,
     return;
   }
 
+  if (ID_IS_LINKED(id)) {
+    BKE_reportf(reports, RPT_ERROR, "ID '%s' is linked, cannot edit its overrides", id->name);
+    return;
+  }
+
   BKE_lib_override_library_operations_create(bmain, id);
 
   WM_main_add_notifier(NC_WM | ND_LIB_OVERRIDE_CHANGED, NULL);