diff -ur old.PyICU-1.5/layoutengine.cpp PyICU-1.5/layoutengine.cpp
--- old.PyICU-1.5/layoutengine.cpp	2012-11-23 21:39:01.000000000 +0100
+++ PyICU-1.5/layoutengine.cpp	2015-10-29 13:44:15.610882520 +0100
@@ -118,6 +118,12 @@
      * LEFontInstance API.
      */
 
+    virtual const void *getFontTable(LETag tableTag, size_t &length) const
+    {
+        length = -1;
+        return getFontTable(tableTag);
+    }
+
     virtual const void *getFontTable(LETag tag) const
     {
 #if PY_MAJOR_VERSION >= 3