From ef14cad736e499f42281e09d3835ad667245e4be Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Wed, 8 Dec 2021 10:43:52 -0800
Subject: [PATCH] [GPOS] Disable vertical advance if HB_NO_VERTICAL

---
 src/hb-ot-layout-gpos-table.hh | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/hb-ot-layout-gpos-table.hh b/src/hb-ot-layout-gpos-table.hh
index a8fb5c7ac..6db3e0894 100644
--- a/src/hb-ot-layout-gpos-table.hh
+++ b/src/hb-ot-layout-gpos-table.hh
@@ -118,7 +118,13 @@ struct ValueFormat : HBUINT16
     if (!format) return ret;
 
     hb_font_t *font = c->font;
-    bool horizontal = HB_DIRECTION_IS_HORIZONTAL (c->direction);
+    bool horizontal =
+#ifndef HB_NO_VERTICAL
+      HB_DIRECTION_IS_HORIZONTAL (c->direction)
+#else
+      true
+#endif
+      ;
 
     if (format & xPlacement) glyph_pos.x_offset  += font->em_scale_x (get_short (values++, &ret));
     if (format & yPlacement) glyph_pos.y_offset  += font->em_scale_y (get_short (values++, &ret));