[freetype2] master 29c7592: * src/truetype/ttinterp.c (Ins_GETVARIATION): Avoid NULL reference.

[Werner LEMBERG]

branch: master
commit 29c759284e305ec428703c9a5831d0b1fc3497ef
Author: Werner Lemberg <address@hidden>
Commit: Werner Lemberg <address@hidden>

    * src/truetype/ttinterp.c (Ins_GETVARIATION): Avoid NULL reference.
    
    Reported as
    
      https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5736
---
 ChangeLog               |  8 ++++++++
 src/truetype/ttinterp.c | 12 ++++++++++--
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 15ef4ae..fff4a41 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,13 @@
 2018-01-27  Werner Lemberg  <address@hidden>
 
+       * src/truetype/ttinterp.c (Ins_GETVARIATION): Avoid NULL reference.
+
+       Reported as
+
+         https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5736
+
+2018-01-27  Werner Lemberg  <address@hidden>
+
        * src/truetype/ttgxvar.c (tt_set_mm_blend): Minor.
 
 2018-01-27  Werner Lemberg  <address@hidden>
diff --git a/src/truetype/ttinterp.c b/src/truetype/ttinterp.c
index d855aaa..551f14a 100644
--- a/src/truetype/ttinterp.c
+++ b/src/truetype/ttinterp.c
@@ -7532,8 +7532,16 @@
       return;
     }
 
-    for ( i = 0; i < num_axes; i++ )
-      args[i] = coords[i] >> 2; /* convert 16.16 to 2.14 format */
+    if ( coords )
+    {
+      for ( i = 0; i < num_axes; i++ )
+        args[i] = coords[i] >> 2; /* convert 16.16 to 2.14 format */
+    }
+    else
+    {
+      for ( i = 0; i < num_axes; i++ )
+        args[i] = 0;
+    }
   }