In structure T1_Loader, added swap_table (of type PS_Table) to facilitate placing the .notdef glyph in slot 0.
diff --git a/src/type1/t1load.h b/src/type1/t1load.h
index fb117f0..b83aed9 100644
--- a/src/type1/t1load.h
+++ b/src/type1/t1load.h
@@ -42,6 +42,7 @@ FT_BEGIN_HEADER
FT_Int num_glyphs;
PS_Table glyph_names;
PS_Table charstrings;
+ PS_Table swap_table; /* For moving .notdef glyph to index 0. */
FT_Int num_subrs;
PS_Table subrs;