One more.........

I wonder if there's something better to do about these :(.

In file included from hb-ot-color.cc:31:
hb-ot-color-cpal-table.hh: In member function 'unsigned int OT::CPAL::get_size() const':
hb-ot-color-cpal-table.hh:118: error: ISO C++ says that these are ambiguous, even though the worst conversion for the first is better than the worst conversion for the second:

src/hb-ot-color-cpal-table.hh

@@ -115,7 +115,7 @@ struct CPAL
   inline bool has_data (void) const { return numPalettes; }
 
   inline unsigned int get_size (void) const
-  { return min_size + numPalettes * sizeof (colorRecordIndicesZ[0]); }
+  { return min_size + numPalettes * sizeof (colorRecordIndicesZ[0u]); }
 
   inline unsigned int get_palette_count () const { return numPalettes; }
   inline unsigned int get_color_count () const { return numColors; }