From c22d2f9e015a66951b96104dca51d40d40eed1ce Mon Sep 17 00:00:00 2001
From: mano-wii <germano.costa@ig.com.br>
Date: Fri, 17 Jan 2020 09:17:36 -0300
Subject: [PATCH] Fix T73159: Crash transforming 0 edited grease objects

---
 source/blender/editors/transform/transform_convert_gpencil.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/source/blender/editors/transform/transform_convert_gpencil.c b/source/blender/editors/transform/transform_convert_gpencil.c
index 234e383be5f..80c0afc3f56 100644
--- a/source/blender/editors/transform/transform_convert_gpencil.c
+++ b/source/blender/editors/transform/transform_convert_gpencil.c
@@ -63,6 +63,10 @@ static void createTransGPencil_center_get(bGPDstroke *gps, float r_center[3])
 
 void createTransGPencil(bContext *C, TransInfo *t)
 {
+  if (t->data_container_len == 0) {
+    return;
+  }
+
   Depsgraph *depsgraph = CTX_data_ensure_evaluated_depsgraph(C);
   bGPdata *gpd = ED_gpencil_data_get_active(C);
   ToolSettings *ts = CTX_data_tool_settings(C);