commit b435ab7e29c388e3b100f729957319931625a3a8
author Behdad Esfahbod <behdad@behdad.org> Mon May 10 19:51:57 2010 -0400
committer Behdad Esfahbod <behdad@behdad.org> Mon May 10 19:51:57 2010 -0400
tree 5d304a1c6b7ca4bf89b7d85f5f6c456fc91523e5
parent dacebcadae36b35531d635d81df2afb937677b7a

Fix accessing tables from NULL pointer

src/hb-open-type-private.hh

diff --git a/src/hb-open-type-private.hh b/src/hb-open-type-private.hh
index 023df83..8c3e8a4 100644
--- a/src/hb-open-type-private.hh
+++ b/src/hb-open-type-private.hh
@@ -330,6 +330,11 @@
       return hb_blob_create_empty ();
     }
   }
+
+  static const Type* lock_instance (hb_blob_t *blob) {
+    const char *base = hb_blob_lock (blob);
+    return unlikely (!base) ? &Null(Type) : CastP<Type> (base);
+  }
 };