From 3a36cbdfde85aa4461e6907d49e3afa45ac2dfbb Mon Sep 17 00:00:00 2001
From: Campbell Barton <ideasman42@gmail.com>
Date: Thu, 14 Jun 2018 15:59:12 +0200
Subject: [PATCH] Transform: Suppress assert w/ vertex paint

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

diff --git a/source/blender/editors/transform/transform_conversions.c b/source/blender/editors/transform/transform_conversions.c
index 8a2bf1a63dd..8462004c549 100644
--- a/source/blender/editors/transform/transform_conversions.c
+++ b/source/blender/editors/transform/transform_conversions.c
@@ -8632,6 +8632,10 @@ void createTransData(bContext *C, TransInfo *t)
 			createTransPaintCurveVerts(C, t);
 			countAndCleanTransDataContainer(t);
 		}
+		/* Mark as initialized if above checks fail. */
+		if (t->data_len_all == -1) {
+			t->data_len_all = 0;
+		}
 	}
 	else {
 		createTransObject(C, t);