From eba626ff6a2cbf92ddff267633ba1b7e5cb9540c Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Tue, 31 May 2022 08:20:56 -0600
Subject: [PATCH] [shape-plan] Return empty plan if buffer direction is invalid

Happens if buffer creation failed.
---
 src/hb-shape-plan.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/hb-shape-plan.cc b/src/hb-shape-plan.cc
index 66332165c..4c79e9cac 100644
--- a/src/hb-shape-plan.cc
+++ b/src/hb-shape-plan.cc
@@ -231,7 +231,8 @@ hb_shape_plan_create2 (hb_face_t                     *face,
 		  num_coords,
 		  shaper_list);
 
-  assert (props->direction != HB_DIRECTION_INVALID);
+  if (unlikely (props->direction == HB_DIRECTION_INVALID))
+    return hb_shape_plan_get_empty ();
 
   hb_shape_plan_t *shape_plan;