Commit: f1a0278e90889ce45bd9bac8140b7726c5d518de
Author: Lukas Tönne
Date: Fri Feb 21 10:08:49 2014 +0100
https://developer.blender.org/rBf1a0278e90889ce45bd9bac8140b7726c5d518de
Fix T37719: NodeTrees lose users on undo.
The node editor needs to "ensure real user" (id_us_ensure_real) on all
the node trees. This was done correctly for all open groups, but missing
for the base node tree. Function is a bit hidden behind anonymous
arguments in readfile.c ...
===================================================================
M source/blender/blenloader/intern/readfile.c
===================================================================
diff --git a/source/blender/blenloader/intern/readfile.c
b/source/blender/blenloader/intern/readfile.c
index cfc5092..c14b34a 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -6083,7 +6083,7 @@ void blo_lib_link_screen_restore(Main *newmain, bScreen
*curscreen, Scene *cursc
if (ntree)
snode->nodetree = ntree;
else
- snode->nodetree =
restore_pointer_by_name(newmain, (ID*)snode->nodetree, 0);
+ snode->nodetree =
restore_pointer_by_name(newmain, (ID*)snode->nodetree, 2);
for (path = snode->treepath.first;
path; path = path->next) {
if (path ==
snode->treepath.first) {
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