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--- bzip2-0.1pl2.c 1997-08-30 01:32:15.000000000 +0200
+++ crc2.c 2011-08-20 12:01:46.000000000 +0200
@@ -1,18 +1,13 @@
-
-/*-----------------------------------------------------------*/
-/*--- A block-sorting, lossless compressor bzip2.c ---*/
-/*-----------------------------------------------------------*/
-
-/*--
- This program is bzip2, a lossless, block-sorting data compressor,
- version 0.1pl2, dated 29-Aug-1997.
-
+/* This is an ancient version of bzip2 (0.1pl2) modified to produce
+ blocks with incorrect block CRCs, but valid stream CRCs.
+ Note that this program is full of bugs! Use with care!
+ */
+/*-
+ Copyright (C) 2011 Mikolaj Izdebski
Copyright (C) 1996, 1997 by Julian Seward.
- Guildford, Surrey, UK
- email: jseward@acm.org
- This program is free software; you can redistribute it and/or modify
+ This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
@@ -23,8 +18,18 @@
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
- The GNU General Public License is contained in the file LICENSE.
+/*-----------------------------------------------------------*/
+/*--- A block-sorting, lossless compressor bzip2.c ---*/
+/*-----------------------------------------------------------*/
+
+/*--
+ This program is bzip2, a lossless, block-sorting data compressor,
+ version 0.1pl2, dated 29-Aug-1997.
+
+ Copyright (C) 1996, 1997 by Julian Seward.
+ Guildford, Surrey, UK
+ email: jseward@acm.org
This program is based on (at least) the work of:
@@ -160,5 +165,5 @@
run rather slowly. gcc version 2.x is recommended.
--*/
- #ifdef __GNUC__
+ #if 0
#define INLINE inline
#define NORETURN __attribute__ ((noreturn))
@@ -2740,5 +2745,5 @@
/*-- Now the block's CRC, so it is in a known place. --*/
- bsPutUInt32 ( blockCRC );
+ bsPutUInt32 ( blockCRC ^ 0xDEADBEEFu ); /* write invalid CRC */
/*-- Now a single bit indicating randomisation. --*/
|
