[Bf-blender-cvs] [03d258d6133] blender2.8: Copy on write: Prevent crash when duplicating object with particle system

[Sergey Sharybin]

Commit: 03d258d61335cfca326543a3d13b082597cfba2a
Author: Sergey Sharybin
Date:   Thu Jul 27 16:28:16 2017 +0200
Branches: blender2.8
https://developer.blender.org/rB03d258d61335cfca326543a3d13b082597cfba2a

Copy on write: Prevent crash when duplicating object with particle system

Transform system was using global main, which might have been pointing to a
freed scene layer.

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

M	source/blender/editors/transform/transform_conversions.c

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

diff --git a/source/blender/editors/transform/transform_conversions.c b/source/blender/editors/transform/transform_conversions.c
index 06c38a8abcc..72218c4043f 100644
--- a/source/blender/editors/transform/transform_conversions.c
+++ b/source/blender/editors/transform/transform_conversions.c
@@ -5553,10 +5553,14 @@ static void set_trans_object_base_flags(TransInfo *t)
 	DEG_scene_relations_update(G.main, t->scene);
 
 	/* handle pending update events, otherwise they got copied below */
+	EvaluationContext eval_ctx;
+	DEG_evaluation_context_init_from_scene(&eval_ctx,
+	                                       t->scene, t->scene_layer,
+	                                       DAG_EVAL_VIEWPORT);
 	for (base = sl->object_bases.first; base; base = base->next) {
 		if (base->object->recalc & OB_RECALC_ALL) {
 			/* TODO(sergey): Ideally, it's not needed. */
-			BKE_object_handle_update(G.main->eval_ctx, t->scene, base->object);
+			BKE_object_handle_update(&eval_ctx, t->scene, base->object);
 		}
 	}