[bdf] Fix Savannah bug #34896.

ENCODING now covers the whole Unicode range.

Note, however, that this change is quite expensive since it
increases the size of three arrays by almost 400kByte in total.  The
right fix is to replace the logic with something smarter.
Additionally, there exist very old BDFs for three-byte CCCII
encoding which exceeds the range of Unicode (another reason to have
a smarter logic).

* src/bdf/bdf.h (bdf_font_t): Increase size of `nmod' and `umod'
arrays.
* src/bdf/bdflib.c (bdf_parse_t): Increase size of `have' array.

ChangeLog

@@ -1,3 +1,20 @@
+2011-11-27  Werner Lemberg  <wl@gnu.org>
+
+	[bdf] Fix Savannah bug #34896.
+
+	ENCODING now covers the whole Unicode range.
+
+	Note, however, that this change is quite expensive since it
+	increases the size of three arrays by almost 400kByte in total.  The
+	right fix is to replace the logic with something smarter.
+	Additionally, there exist very old BDFs for three-byte CCCII
+	encoding which exceeds the range of Unicode (another reason to have
+	a smarter logic).
+
+	* src/bdf/bdf.h (bdf_font_t): Increase size of `nmod' and `umod'
+	arrays.
+	* src/bdf/bdflib.c (bdf_parse_t): Increase size of `have' array.
+
 2011-11-27  Werner Lemberg  <wl@gnu.org>
 
 	[bdf] Improve tracing.
@@ -303,7 +320,7 @@
 	Add explicit LZW decompression stack size limit.
 
 	Stack larger than 1<<LZW_MAX_BITS is never needed if prefix table is
-	constructed correctly.  It's even less than that, see e.g. 
+	constructed correctly.  It's even less than that, see e.g.
 	libarchive code comment for a better size upper bound:
 
 	  http://code.google.com/p/libarchive/source/browse/trunk/libarchive/archive_read_support_filter_compress.c?r=3635#121

src/bdf/bdf.h

@@ -1,6 +1,6 @@
 /*
  * Copyright 2000 Computing Research Labs, New Mexico State University
- * Copyright 2001, 2002, 2003, 2004 Francesco Zappa Nardelli
+ * Copyright 2001-2004, 2011 Francesco Zappa Nardelli
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -226,8 +226,10 @@ FT_BEGIN_HEADER
 
     void*            internal;       /* Internal data for the font.         */
 
-    unsigned long    nmod[2048];     /* Bitmap indicating modified glyphs.  */
-    unsigned long    umod[2048];     /* Bitmap indicating modified          */
+    /* The size of the next two arrays must be in sync with the */
+    /* size of the `have' array in the `bdf_parse_t' structure. */
+    unsigned long    nmod[34816];    /* Bitmap indicating modified glyphs.  */
+    unsigned long    umod[34816];    /* Bitmap indicating modified          */
                                      /* unencoded glyphs.                   */
     unsigned short   modified;       /* Boolean indicating font modified.   */
     unsigned short   bpp;            /* Bits per pixel.                     */

src/bdf/bdflib.c

@@ -413,7 +413,8 @@
     bdf_font_t*     font;
     bdf_options_t*  opts;
 
-    unsigned long   have[2048];
+    unsigned long   have[34816]; /* must be in sync with `nmod' and `umod' */
+                                 /* arrays from `bdf_font_t' structure     */
     _bdf_list_t     list;
 
     FT_Memory       memory;
@@ -1605,8 +1606,8 @@
 
       FT_TRACE4(( DBGMSG2, p->glyph_enc ));
 
-      /* Check that the encoding is in the range [0,65536] because */
-      /* otherwise p->have (a bitmap with static size) overflows.  */
+      /* Check that the encoding is in the Unicode range because  */
+      /* otherwise p->have (a bitmap with static size) overflows. */
       if ( p->glyph_enc > 0                               &&
            (size_t)p->glyph_enc >= sizeof ( p->have ) * 8 )
       {