From addb2bbff252b6751e3eb97ac859d4ecbd4e1b78 Mon Sep 17 00:00:00 2001
From: Campbell Barton <ideasman42@gmail.com>
Date: Fri, 16 Jul 2010 22:21:37 +0000
Subject: [PATCH] fix for assigning any ID in rna, it would not run
 id_lib_extern() which means the library reference would be lost on reload.

---
 source/blender/makesrna/intern/makesrna.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/source/blender/makesrna/intern/makesrna.c b/source/blender/makesrna/intern/makesrna.c
index 40f6c1de67e..35b2eff9c62 100644
--- a/source/blender/makesrna/intern/makesrna.c
+++ b/source/blender/makesrna/intern/makesrna.c
@@ -628,6 +628,14 @@ static char *rna_def_property_set_func(FILE *f, StructRNA *srna, PropertyRNA *pr
 					fprintf(f, "	if(value.data)\n");
 					fprintf(f, "		id_us_plus((ID*)value.data);\n\n");
 				}
+				else {
+					PointerPropertyRNA *pprop= (PointerPropertyRNA*)dp->prop;
+					StructRNA *type= rna_find_struct((char*)pprop->type);
+					if(type && (type->flag & STRUCT_ID)) {
+						fprintf(f, "	if(value.data)\n");
+						fprintf(f, "		id_lib_extern((ID*)value.data);\n\n");
+					}
+				}
 
 				fprintf(f, "	data->%s= value.data;\n", dp->dnaname);