Commit: 18be39ff17e995ab09bd9eef2b842f66f5270e37
Author: Bastien Montagne
Date:   Wed Nov 9 16:42:28 2016 +0100
Branches: master
https://developer.blender.org/rB18be39ff17e995ab09bd9eef2b842f66f5270e37

Fix some assert when making local (due to infamous PITA ShapeKey ID).

===================================================================

M       source/blender/blenkernel/intern/library.c

===================================================================

diff --git a/source/blender/blenkernel/intern/library.c 
b/source/blender/blenkernel/intern/library.c
index 5d23788..14804d0 100644
--- a/source/blender/blenkernel/intern/library.c
+++ b/source/blender/blenkernel/intern/library.c
@@ -264,9 +264,12 @@ void id_fake_user_clear(ID *id)
 }
 
 static int id_expand_local_callback(
-        void *UNUSED(user_data), struct ID *UNUSED(id_self), struct ID 
**id_pointer, int UNUSED(cd_flag))
+        void *UNUSED(user_data), struct ID *id_self, struct ID **id_pointer, 
int UNUSED(cd_flag))
 {
-       if (*id_pointer) {
+       /* Can hapen that we get unlinkable ID here, e.g. with shapekey 
referring to itself (through drivers)...
+        * Just skip it, shape key can only be either indirectly linked, or 
fully local, period.
+        * And let's curse one more time that stupid useless shapekey ID type! 
*/
+       if (*id_pointer && *id_pointer != id_self && 
BKE_idcode_is_linkable(GS((*id_pointer)->name))) {
                id_lib_extern(*id_pointer);
        }

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