From 99e60d840db667ec9f50e481572aa5df97d23836 Mon Sep 17 00:00:00 2001
From: Werner Lemberg <wl@gnu.org>
Date: Mon, 10 Jun 2013 01:44:37 +0200
Subject: [PATCH] Fix Savannah bug #39160.

* src/truetype/ttinterp.c (Ins_SDPVTL): Set projection vector too
for the degenerate case.
---
 ChangeLog               | 7 +++++++
 src/truetype/ttinterp.c | 6 ++++++
 2 files changed, 13 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index d85fde8ac..653ca4212 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2013-06-10  Werner Lemberg  <wl@gnu.org>
+
+	Fix Savannah bug #39160.
+
+	* src/truetype/ttinterp.c (Ins_SDPVTL): Set projection vector too
+	for the degenerate case.
+
 2013-06-09  David Turner  <digit@google.com>
 
 	* src/cache/ftcmanag.c (FTC_Manager_Reset): Add missing cache flush.
diff --git a/src/truetype/ttinterp.c b/src/truetype/ttinterp.c
index 47ceca1ef..798d4a9b3 100644
--- a/src/truetype/ttinterp.c
+++ b/src/truetype/ttinterp.c
@@ -5398,6 +5398,12 @@
 
       A = v1->x - v2->x;
       B = v1->y - v2->y;
+
+      if ( A == 0 && B == 0 )
+      {
+        A    = 0x4000;
+        aOpc = 0;
+      }
     }
 
     if ( ( aOpc & 1 ) != 0 )