From 6e5445a232cbdbf18a45629cf2f12a81c043607f Mon Sep 17 00:00:00 2001
From: Werner Lemberg <wl@gnu.org>
Date: Mon, 15 May 2017 21:24:04 +0200
Subject: [PATCH] [truetype] Fix error handling for embedded bitmaps.

Problem reported by Hin-Tak Leung <htl10@users.sourceforge.net>.

* src/truetype/ttgload.c (TT_Load_Glyph)
[TT_CONFIG_OPTION_EMBEDDED_BITMAPS]: Handle error if font is not
scalable.
---
 ChangeLog              | 10 ++++++++++
 src/truetype/ttgload.c |  8 +++++++-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 1d40059c3..ad8ef9506 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2017-05-15  Werner Lemberg  <wl@gnu.org>
+
+	[truetype] Fix error handling for embedded bitmaps.
+
+	Problem reported by Hin-Tak Leung <htl10@users.sourceforge.net>.
+
+	* src/truetype/ttgload.c (TT_Load_Glyph)
+	[TT_CONFIG_OPTION_EMBEDDED_BITMAPS]: Handle error if font is not
+	scalable.
+
 2017-05-15  Alexei Podtelezhnikov  <apodtele@gmail.com>
 
 	[autofit] Make autohint warping NORMAL option.
diff --git a/src/truetype/ttgload.c b/src/truetype/ttgload.c
index b7a844a6c..68a9b4ad5 100644
--- a/src/truetype/ttgload.c
+++ b/src/truetype/ttgload.c
@@ -2621,7 +2621,13 @@
          IS_DEFAULT_INSTANCE                     )
     {
       error = load_sbit_image( size, glyph, glyph_index, load_flags );
-      if ( !error )
+      if ( error )
+      {
+        /* return error if font is not scalable */
+        if ( !FT_IS_SCALABLE( glyph->face ) )
+          return error;
+      }
+      else
       {
         if ( FT_IS_SCALABLE( glyph->face ) )
         {