File bsc-1038506.patch of Package ft2demos
commit 999bcee2d7a3c65700f3e898f9a60585a973c376
Author: Alexei Podtelezhnikov <apodtele@gmail.com>
Date: Sun Jun 26 08:27:29 2016 +0200
[pcf] Fix handling of very large fonts (#47708).
* src/pcf/pcfread.c (pcf_get_encodings): Make `encodingOffset' an
unsigned short.
Only reject `0xFFFF' as an invalid encoding offset.
Index: freetype-2.6.3/src/pcf/pcfread.c
===================================================================
--- freetype-2.6.3.orig/src/pcf/pcfread.c
+++ freetype-2.6.3/src/pcf/pcfread.c
@@ -849,7 +849,7 @@ THE SOFTWARE.
int firstCol, lastCol;
int firstRow, lastRow;
FT_ULong nencoding;
- int encodingOffset;
+ FT_UShort encodingOffset;
int i, j;
FT_ULong k;
PCF_Encoding encoding = NULL;
@@ -921,15 +921,19 @@ THE SOFTWARE.
{
for ( j = firstCol; j <= lastCol; j++ )
{
+ /* X11's reference implementation uses the equivalent to */
+ /* `FT_GET_SHORT', however PCF fonts with more than 32768 */
+ /* characters (e.g. `unifont.pcf') clearly show that an */
+ /* unsigned value is needed. */
if ( PCF_BYTE_ORDER( format ) == MSBFirst )
- encodingOffset = FT_GET_SHORT();
+ encodingOffset = FT_GET_USHORT();
else
- encodingOffset = FT_GET_SHORT_LE();
+ encodingOffset = FT_GET_USHORT_LE();
- if ( encodingOffset > -1 )
+ if ( encodingOffset != 0xFFFFU )
{
encoding[k].enc = i * 256 + j;
- encoding[k].glyph = (FT_UShort)encodingOffset;
+ encoding[k].glyph = encodingOffset;
FT_TRACE5(( " code %d (0x%04X): idx %d\n",
encoding[k].enc, encoding[k].enc, encoding[k].glyph ));