From 8d74a15d4ca06a5ddc1208e26cf48357d7b82376 Mon Sep 17 00:00:00 2001
From: handa <handa>
Date: Thu, 26 Feb 2009 05:39:57 +0000
Subject: [PATCH] (free_stream): Check stream->buf before freeing it.
 (read_gdef_table): Do nothing if stream->buf is NULL.
 (read_header_part): If a font doesn't have a GDEF table,
 make a pseudo stream.

---
 src/otfopen.c |   42 ++++++++++++++++++++++++++----------------
 1 file changed, 26 insertions(+), 16 deletions(-)

diff --git a/src/otfopen.c b/src/otfopen.c
index 7e7cb34..fe9da87 100644
--- a/src/otfopen.c
+++ b/src/otfopen.c
@@ -164,7 +164,8 @@ make_stream_from_ft_face (FT_Face face, const char *name)
 static void
 free_stream (OTF_Stream *stream)
 {
-  free (stream->buf);
+  if (stream->buf)
+    free (stream->buf);
   free (stream);
 }
 
@@ -1210,22 +1211,27 @@ read_gdef_table (OTF *otf, OTF_TableInfo *table, enum OTF_ReaderFlag flag)
   OTF_GDEF *gdef;
 
   OTF_CALLOC (gdef, 1, "");
-  read_gdef_header (stream, (OTF_GDEFHeader *) &gdef->header);
-  if (gdef->header.GlyphClassDef)
+  if (stream->buf)
     {
-      gdef->glyph_class_def.offset = gdef->header.GlyphClassDef;
-      read_class_def_without_offset (otf, stream, &gdef->glyph_class_def);
-    }
-  if (gdef->header.AttachList)
-    read_attach_list (otf, stream, gdef->header.AttachList,
-		      &gdef->attach_list);
-  if (gdef->header.LigCaretList)
-    read_lig_caret_list (otf, stream, gdef->header.LigCaretList,
-			 &gdef->lig_caret_list);
-  if (gdef->header.MarkAttachClassDef)
-    {
-      gdef->mark_attach_class_def.offset = gdef->header.MarkAttachClassDef;
-      read_class_def_without_offset (otf, stream, &gdef->mark_attach_class_def);
+      read_gdef_header (stream, (OTF_GDEFHeader *) &gdef->header);
+      if (gdef->header.GlyphClassDef)
+	{
+	  gdef->glyph_class_def.offset = gdef->header.GlyphClassDef;
+	  read_class_def_without_offset (otf, stream,
+					 &gdef->glyph_class_def);
+	}
+      if (gdef->header.AttachList)
+	read_attach_list (otf, stream, gdef->header.AttachList,
+			  &gdef->attach_list);
+      if (gdef->header.LigCaretList)
+	read_lig_caret_list (otf, stream, gdef->header.LigCaretList,
+			     &gdef->lig_caret_list);
+      if (gdef->header.MarkAttachClassDef)
+	{
+	  gdef->mark_attach_class_def.offset = gdef->header.MarkAttachClassDef;
+	  read_class_def_without_offset (otf, stream,
+					 &gdef->mark_attach_class_def);
+	}
     }
 
   *table->address = gdef;
@@ -2846,6 +2852,10 @@ read_header_part (OTF *otf, FILE *fp, FT_Face face)
 	internal_data->table_info[OTF_TABLE_TYPE_GPOS].stream = stream;
     }
 
+  if (! internal_data->table_info[OTF_TABLE_TYPE_GDEF].stream)
+    /* We can simulate the GDEF table.  */
+    internal_data->table_info[OTF_TABLE_TYPE_GDEF].stream
+      = make_stream ("GDEF");
   return 0;
 }
 
-- 
1.7.10.4