source: trunk/src/gcc/zlib/ChangeLog@ 1010

Last change on this file since 1010 was 2, checked in by bird, 22 years ago

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12003-02-05 Release Manager
2
3 * GCC 3.2.2 Released.
4
52002-11-19 Release Manager
6
7 * GCC 3.2.1 Released.
8
92002-11-19 Release Manager
10
11 * GCC 3.2.1 Released.
12
132002-11-18 Release Manager
14
15 * GCC 3.2.1 Released.
16
172002-10-07 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
18
19 * Makefile.am (all-multi): Fix multilib parallel build.
20
212002-08-14 Release Manager
22
23 * GCC 3.2 Released.
24
252002-07-25 Release Manager
26
27 * GCC 3.1.1 Released.
28
292002-05-14 Release Manager
30
31 * GCC 3.1 Released.
32
332002-05-14 Release Manager
34
35 * GCC 3.1 Released.
36
372002-05-08 Alexandre Oliva <aoliva@redhat.com>
38
39 * configure.in (ORIGINAL_LD_FOR_MULTILIBS): Preserve LD at
40 script entry, and set LD to it when configuring multilibs.
41 * configure: Rebuilt.
42
432001-06-09 Alexandre Oliva <aoliva@redhat.com>, Stephen L Moshier <moshier@mediaone.net>
44
45 * configure.in (AC_EXEEXT): Work around in case it expands to
46 nothing, as in autoconf 2.50.
47 * configure: Rebuilt.
48
49
50 ChangeLog file for zlib
51
52Changes in 1.1.4 (11 March 2002)
53- ZFREE was repeated on same allocation on some error conditions.
54 This creates a security problem described in
55 http://www.zlib.org/advisory-2002-03-11.txt
56- Returned incorrect error (Z_MEM_ERROR) on some invalid data
57- Avoid accesses before window for invalid distances with inflate window
58 less than 32K.
59- force windowBits > 8 to avoid a bug in the encoder for a window size
60 of 256 bytes. (A complete fix will be available in 1.1.5).
61
62Changes in 1.1.3 (9 July 1998)
63- fix "an inflate input buffer bug that shows up on rare but persistent
64 occasions" (Mark)
65- fix gzread and gztell for concatenated .gz files (Didier Le Botlan)
66- fix gzseek(..., SEEK_SET) in write mode
67- fix crc check after a gzeek (Frank Faubert)
68- fix miniunzip when the last entry in a zip file is itself a zip file
69 (J Lillge)
70- add contrib/asm586 and contrib/asm686 (Brian Raiter)
71 See http://www.muppetlabs.com/~breadbox/software/assembly.html
72- add support for Delphi 3 in contrib/delphi (Bob Dellaca)
73- add support for C++Builder 3 and Delphi 3 in contrib/delphi2 (Davide Moretti)
74- do not exit prematurely in untgz if 0 at start of block (Magnus Holmgren)
75- use macro EXTERN instead of extern to support DLL for BeOS (Sander Stoks)
76- added a FAQ file
77
78- Support gzdopen on Mac with Metrowerks (Jason Linhart)
79- Do not redefine Byte on Mac (Brad Pettit & Jason Linhart)
80- define SEEK_END too if SEEK_SET is not defined (Albert Chin-A-Young)
81- avoid some warnings with Borland C (Tom Tanner)
82- fix a problem in contrib/minizip/zip.c for 16-bit MSDOS (Gilles Vollant)
83- emulate utime() for WIN32 in contrib/untgz (Gilles Vollant)
84- allow several arguments to configure (Tim Mooney, Frodo Looijaard)
85- use libdir and includedir in Makefile.in (Tim Mooney)
86- support shared libraries on OSF1 V4 (Tim Mooney)
87- remove so_locations in "make clean" (Tim Mooney)
88- fix maketree.c compilation error (Glenn, Mark)
89- Python interface to zlib now in Python 1.5 (Jeremy Hylton)
90- new Makefile.riscos (Rich Walker)
91- initialize static descriptors in trees.c for embedded targets (Nick Smith)
92- use "foo-gz" in example.c for RISCOS and VMS (Nick Smith)
93- add the OS/2 files in Makefile.in too (Andrew Zabolotny)
94- fix fdopen and halloc macros for Microsoft C 6.0 (Tom Lane)
95- fix maketree.c to allow clean compilation of inffixed.h (Mark)
96- fix parameter check in deflateCopy (Gunther Nikl)
97- cleanup trees.c, use compressed_len only in debug mode (Christian Spieler)
98- Many portability patches by Christian Spieler:
99 . zutil.c, zutil.h: added "const" for zmem*
100 . Make_vms.com: fixed some typos
101 . Make_vms.com: msdos/Makefile.*: removed zutil.h from some dependency lists
102 . msdos/Makefile.msc: remove "default rtl link library" info from obj files
103 . msdos/Makefile.*: use model-dependent name for the built zlib library
104 . msdos/Makefile.emx, nt/Makefile.emx, nt/Makefile.gcc:
105 new makefiles, for emx (DOS/OS2), emx&rsxnt and mingw32 (Windows 9x / NT)
106- use define instead of typedef for Bytef also for MSC small/medium (Tom Lane)
107- replace __far with _far for better portability (Christian Spieler, Tom Lane)
108- fix test for errno.h in configure (Tim Newsham)
109
110Changes in 1.1.2 (19 March 98)
111- added contrib/minzip, mini zip and unzip based on zlib (Gilles Vollant)
112 See http://www.winimage.com/zLibDll/unzip.html
113- preinitialize the inflate tables for fixed codes, to make the code
114 completely thread safe (Mark)
115- some simplifications and slight speed-up to the inflate code (Mark)
116- fix gzeof on non-compressed files (Allan Schrum)
117- add -std1 option in configure for OSF1 to fix gzprintf (Martin Mokrejs)
118- use default value of 4K for Z_BUFSIZE for 16-bit MSDOS (Tim Wegner + Glenn)
119- added os2/Makefile.def and os2/zlib.def (Andrew Zabolotny)
120- add shared lib support for UNIX_SV4.2MP (MATSUURA Takanori)
121- do not wrap extern "C" around system includes (Tom Lane)
122- mention zlib binding for TCL in README (Andreas Kupries)
123- added amiga/Makefile.pup for Amiga powerUP SAS/C PPC (Andreas Kleinert)
124- allow "make install prefix=..." even after configure (Glenn Randers-Pehrson)
125- allow "configure --prefix $HOME" (Tim Mooney)
126- remove warnings in example.c and gzio.c (Glenn Randers-Pehrson)
127- move Makefile.sas to amiga/Makefile.sas
128
129Changes in 1.1.1 (27 Feb 98)
130- fix macros _tr_tally_* in deflate.h for debug mode (Glenn Randers-Pehrson)
131- remove block truncation heuristic which had very marginal effect for zlib
132 (smaller lit_bufsize than in gzip 1.2.4) and degraded a little the
133 compression ratio on some files. This also allows inlining _tr_tally for
134 matches in deflate_slow.
135- added msdos/Makefile.w32 for WIN32 Microsoft Visual C++ (Bob Frazier)
136
137Changes in 1.1.0 (24 Feb 98)
138- do not return STREAM_END prematurely in inflate (John Bowler)
139- revert to the zlib 1.0.8 inflate to avoid the gcc 2.8.0 bug (Jeremy Buhler)
140- compile with -DFASTEST to get compression code optimized for speed only
141- in minigzip, try mmap'ing the input file first (Miguel Albrecht)
142- increase size of I/O buffers in minigzip.c and gzio.c (not a big gain
143 on Sun but significant on HP)
144
145- add a pointer to experimental unzip library in README (Gilles Vollant)
146- initialize variable gcc in configure (Chris Herborth)
147
148Changes in 1.0.9 (17 Feb 1998)
149- added gzputs and gzgets functions
150- do not clear eof flag in gzseek (Mark Diekhans)
151- fix gzseek for files in transparent mode (Mark Diekhans)
152- do not assume that vsprintf returns the number of bytes written (Jens Krinke)
153- replace EXPORT with ZEXPORT to avoid conflict with other programs
154- added compress2 in zconf.h, zlib.def, zlib.dnt
155- new asm code from Gilles Vollant in contrib/asm386
156- simplify the inflate code (Mark):
157 . Replace ZALLOC's in huft_build() with single ZALLOC in inflate_blocks_new()
158 . ZALLOC the length list in inflate_trees_fixed() instead of using stack
159 . ZALLOC the value area for huft_build() instead of using stack
160 . Simplify Z_FINISH check in inflate()
161
162- Avoid gcc 2.8.0 comparison bug a little differently than zlib 1.0.8
163- in inftrees.c, avoid cc -O bug on HP (Farshid Elahi)
164- in zconf.h move the ZLIB_DLL stuff earlier to avoid problems with
165 the declaration of FAR (Gilles VOllant)
166- install libz.so* with mode 755 (executable) instead of 644 (Marc Lehmann)
167- read_buf buf parameter of type Bytef* instead of charf*
168- zmemcpy parameters are of type Bytef*, not charf* (Joseph Strout)
169- do not redeclare unlink in minigzip.c for WIN32 (John Bowler)
170- fix check for presence of directories in "make install" (Ian Willis)
171
172Changes in 1.0.8 (27 Jan 1998)
173- fixed offsets in contrib/asm386/gvmat32.asm (Gilles Vollant)
174- fix gzgetc and gzputc for big endian systems (Markus Oberhumer)
175- added compress2() to allow setting the compression level
176- include sys/types.h to get off_t on some systems (Marc Lehmann & QingLong)
177- use constant arrays for the static trees in trees.c instead of computing
178 them at run time (thanks to Ken Raeburn for this suggestion). To create
179 trees.h, compile with GEN_TREES_H and run "make test".
180- check return code of example in "make test" and display result
181- pass minigzip command line options to file_compress
182- simplifying code of inflateSync to avoid gcc 2.8 bug
183
184- support CC="gcc -Wall" in configure -s (QingLong)
185- avoid a flush caused by ftell in gzopen for write mode (Ken Raeburn)
186- fix test for shared library support to avoid compiler warnings
187- zlib.lib -> zlib.dll in msdos/zlib.rc (Gilles Vollant)
188- check for TARGET_OS_MAC in addition to MACOS (Brad Pettit)
189- do not use fdopen for Metrowerks on Mac (Brad Pettit))
190- add checks for gzputc and gzputc in example.c
191- avoid warnings in gzio.c and deflate.c (Andreas Kleinert)
192- use const for the CRC table (Ken Raeburn)
193- fixed "make uninstall" for shared libraries
194- use Tracev instead of Trace in infblock.c
195- in example.c use correct compressed length for test_sync
196- suppress +vnocompatwarnings in configure for HPUX (not always supported)
197
198Changes in 1.0.7 (20 Jan 1998)
199- fix gzseek which was broken in write mode
200- return error for gzseek to negative absolute position
201- fix configure for Linux (Chun-Chung Chen)
202- increase stack space for MSC (Tim Wegner)
203- get_crc_table and inflateSyncPoint are EXPORTed (Gilles Vollant)
204- define EXPORTVA for gzprintf (Gilles Vollant)
205- added man page zlib.3 (Rick Rodgers)
206- for contrib/untgz, fix makedir() and improve Makefile
207
208- check gzseek in write mode in example.c
209- allocate extra buffer for seeks only if gzseek is actually called
210- avoid signed/unsigned comparisons (Tim Wegner, Gilles Vollant)
211- add inflateSyncPoint in zconf.h
212- fix list of exported functions in nt/zlib.dnt and mdsos/zlib.def
213
214Changes in 1.0.6 (19 Jan 1998)
215- add functions gzprintf, gzputc, gzgetc, gztell, gzeof, gzseek, gzrewind and
216 gzsetparams (thanks to Roland Giersig and Kevin Ruland for some of this code)
217- Fix a deflate bug occuring only with compression level 0 (thanks to
218 Andy Buckler for finding this one).
219- In minigzip, pass transparently also the first byte for .Z files.
220- return Z_BUF_ERROR instead of Z_OK if output buffer full in uncompress()
221- check Z_FINISH in inflate (thanks to Marc Schluper)
222- Implement deflateCopy (thanks to Adam Costello)
223- make static libraries by default in configure, add --shared option.
224- move MSDOS or Windows specific files to directory msdos
225- suppress the notion of partial flush to simplify the interface
226 (but the symbol Z_PARTIAL_FLUSH is kept for compatibility with 1.0.4)
227- suppress history buffer provided by application to simplify the interface
228 (this feature was not implemented anyway in 1.0.4)
229- next_in and avail_in must be initialized before calling inflateInit or
230 inflateInit2
231- add EXPORT in all exported functions (for Windows DLL)
232- added Makefile.nt (thanks to Stephen Williams)
233- added the unsupported "contrib" directory:
234 contrib/asm386/ by Gilles Vollant <info@winimage.com>
235 386 asm code replacing longest_match().
236 contrib/iostream/ by Kevin Ruland <kevin@rodin.wustl.edu>
237 A C++ I/O streams interface to the zlib gz* functions
238 contrib/iostream2/ by Tyge Løvset <Tyge.Lovset@cmr.no>
239 Another C++ I/O streams interface
240 contrib/untgz/ by "Pedro A. Aranda Guti\irrez" <paag@tid.es>
241 A very simple tar.gz file extractor using zlib
242 contrib/visual-basic.txt by Carlos Rios <c_rios@sonda.cl>
243 How to use compress(), uncompress() and the gz* functions from VB.
244- pass params -f (filtered data), -h (huffman only), -1 to -9 (compression
245 level) in minigzip (thanks to Tom Lane)
246
247- use const for rommable constants in deflate
248- added test for gzseek and gztell in example.c
249- add undocumented function inflateSyncPoint() (hack for Paul Mackerras)
250- add undocumented function zError to convert error code to string
251 (for Tim Smithers)
252- Allow compilation of gzio with -DNO_DEFLATE to avoid the compression code.
253- Use default memcpy for Symantec MSDOS compiler.
254- Add EXPORT keyword for check_func (needed for Windows DLL)
255- add current directory to LD_LIBRARY_PATH for "make test"
256- create also a link for libz.so.1
257- added support for FUJITSU UXP/DS (thanks to Toshiaki Nomura)
258- use $(SHAREDLIB) instead of libz.so in Makefile.in (for HPUX)
259- added -soname for Linux in configure (Chun-Chung Chen,
260- assign numbers to the exported functions in zlib.def (for Windows DLL)
261- add advice in zlib.h for best usage of deflateSetDictionary
262- work around compiler bug on Atari (cast Z_NULL in call of s->checkfn)
263- allow compilation with ANSI keywords only enabled for TurboC in large model
264- avoid "versionString"[0] (Borland bug)
265- add NEED_DUMMY_RETURN for Borland
266- use variable z_verbose for tracing in debug mode (L. Peter Deutsch).
267- allow compilation with CC
268- defined STDC for OS/2 (David Charlap)
269- limit external names to 8 chars for MVS (Thomas Lund)
270- in minigzip.c, use static buffers only for 16-bit systems
271- fix suffix check for "minigzip -d foo.gz"
272- do not return an error for the 2nd of two consecutive gzflush() (Felix Lee)
273- use _fdopen instead of fdopen for MSC >= 6.0 (Thomas Fanslau)
274- added makelcc.bat for lcc-win32 (Tom St Denis)
275- in Makefile.dj2, use copy and del instead of install and rm (Frank Donahoe)
276- Avoid expanded $Id: ChangeLog,v 1.2.16.5.2.6 2003/02/05 03:01:28 gdr Exp $. Use "rcs -kb" or "cvs admin -kb" to avoid Id expansion.
277- check for unistd.h in configure (for off_t)
278- remove useless check parameter in inflate_blocks_free
279- avoid useless assignment of s->check to itself in inflate_blocks_new
280- do not flush twice in gzclose (thanks to Ken Raeburn)
281- rename FOPEN as F_OPEN to avoid clash with /usr/include/sys/file.h
282- use NO_ERRNO_H instead of enumeration of operating systems with errno.h
283- work around buggy fclose on pipes for HP/UX
284- support zlib DLL with BORLAND C++ 5.0 (thanks to Glenn Randers-Pehrson)
285- fix configure if CC is already equal to gcc
286
287Changes in 1.0.5 (3 Jan 98)
288- Fix inflate to terminate gracefully when fed corrupted or invalid data
289- Use const for rommable constants in inflate
290- Eliminate memory leaks on error conditions in inflate
291- Removed some vestigial code in inflate
292- Update web address in README
293
294Changes in 1.0.4 (24 Jul 96)
295- In very rare conditions, deflate(s, Z_FINISH) could fail to produce an EOF
296 bit, so the decompressor could decompress all the correct data but went
297 on to attempt decompressing extra garbage data. This affected minigzip too.
298- zlibVersion and gzerror return const char* (needed for DLL)
299- port to RISCOS (no fdopen, no multiple dots, no unlink, no fileno)
300- use z_error only for DEBUG (avoid problem with DLLs)
301
302Changes in 1.0.3 (2 Jul 96)
303- use z_streamp instead of z_stream *, which is now a far pointer in MSDOS
304 small and medium models; this makes the library incompatible with previous
305 versions for these models. (No effect in large model or on other systems.)
306- return OK instead of BUF_ERROR if previous deflate call returned with
307 avail_out as zero but there is nothing to do
308- added memcmp for non STDC compilers
309- define NO_DUMMY_DECL for more Mac compilers (.h files merged incorrectly)
310- define __32BIT__ if __386__ or i386 is defined (pb. with Watcom and SCO)
311- better check for 16-bit mode MSC (avoids problem with Symantec)
312
313Changes in 1.0.2 (23 May 96)
314- added Windows DLL support
315- added a function zlibVersion (for the DLL support)
316- fixed declarations using Bytef in infutil.c (pb with MSDOS medium model)
317- Bytef is define's instead of typedef'd only for Borland C
318- avoid reading uninitialized memory in example.c
319- mention in README that the zlib format is now RFC1950
320- updated Makefile.dj2
321- added algorithm.doc
322
323Changes in 1.0.1 (20 May 96) [1.0 skipped to avoid confusion]
324- fix array overlay in deflate.c which sometimes caused bad compressed data
325- fix inflate bug with empty stored block
326- fix MSDOS medium model which was broken in 0.99
327- fix deflateParams() which could generated bad compressed data.
328- Bytef is define'd instead of typedef'ed (work around Borland bug)
329- added an INDEX file
330- new makefiles for DJGPP (Makefile.dj2), 32-bit Borland (Makefile.b32),
331 Watcom (Makefile.wat), Amiga SAS/C (Makefile.sas)
332- speed up adler32 for modern machines without auto-increment
333- added -ansi for IRIX in configure
334- static_init_done in trees.c is an int
335- define unlink as delete for VMS
336- fix configure for QNX
337- add configure branch for SCO and HPUX
338- avoid many warnings (unused variables, dead assignments, etc...)
339- no fdopen for BeOS
340- fix the Watcom fix for 32 bit mode (define FAR as empty)
341- removed redefinition of Byte for MKWERKS
342- work around an MWKERKS bug (incorrect merge of all .h files)
343
344Changes in 0.99 (27 Jan 96)
345- allow preset dictionary shared between compressor and decompressor
346- allow compression level 0 (no compression)
347- add deflateParams in zlib.h: allow dynamic change of compression level
348 and compression strategy.
349- test large buffers and deflateParams in example.c
350- add optional "configure" to build zlib as a shared library
351- suppress Makefile.qnx, use configure instead
352- fixed deflate for 64-bit systems (detected on Cray)
353- fixed inflate_blocks for 64-bit systems (detected on Alpha)
354- declare Z_DEFLATED in zlib.h (possible parameter for deflateInit2)
355- always return Z_BUF_ERROR when deflate() has nothing to do
356- deflateInit and inflateInit are now macros to allow version checking
357- prefix all global functions and types with z_ with -DZ_PREFIX
358- make falloc completely reentrant (inftrees.c)
359- fixed very unlikely race condition in ct_static_init
360- free in reverse order of allocation to help memory manager
361- use zlib-1.0/* instead of zlib/* inside the tar.gz
362- make zlib warning-free with "gcc -O3 -Wall -Wwrite-strings -Wpointer-arith
363 -Wconversion -Wstrict-prototypes -Wmissing-prototypes"
364- allow gzread on concatenated .gz files
365- deflateEnd now returns Z_DATA_ERROR if it was premature
366- deflate is finally (?) fully deterministic (no matches beyond end of input)
367- Document Z_SYNC_FLUSH
368- add uninstall in Makefile
369- Check for __cpluplus in zlib.h
370- Better test in ct_align for partial flush
371- avoid harmless warnings for Borland C++
372- initialize hash_head in deflate.c
373- avoid warning on fdopen (gzio.c) for HP cc -Aa
374- include stdlib.h for STDC compilers
375- include errno.h for Cray
376- ignore error if ranlib doesn't exist
377- call ranlib twice for NeXTSTEP
378- use exec_prefix instead of prefix for libz.a
379- renamed ct_* as _tr_* to avoid conflict with applications
380- clear z->msg in inflateInit2 before any error return
381- initialize opaque in example.c, gzio.c, deflate.c and inflate.c
382- fixed typo in zconf.h (_GNUC__ => __GNUC__)
383- check for WIN32 in zconf.h and zutil.c (avoid farmalloc in 32-bit mode)
384- fix typo in Make_vms.com (f$trnlnm -> f$getsyi)
385- in fcalloc, normalize pointer if size > 65520 bytes
386- don't use special fcalloc for 32 bit Borland C++
387- use STDC instead of __GO32__ to avoid redeclaring exit, calloc, etc...
388- use Z_BINARY instead of BINARY
389- document that gzclose after gzdopen will close the file
390- allow "a" as mode in gzopen.
391- fix error checking in gzread
392- allow skipping .gz extra-field on pipes
393- added reference to Perl interface in README
394- put the crc table in FAR data (I dislike more and more the medium model :)
395- added get_crc_table
396- added a dimension to all arrays (Borland C can't count).
397- workaround Borland C bug in declaration of inflate_codes_new & inflate_fast
398- guard against multiple inclusion of *.h (for precompiled header on Mac)
399- Watcom C pretends to be Microsoft C small model even in 32 bit mode.
400- don't use unsized arrays to avoid silly warnings by Visual C++:
401 warning C4746: 'inflate_mask' : unsized array treated as '__far'
402 (what's wrong with far data in far model?).
403- define enum out of inflate_blocks_state to allow compilation with C++
404
405Changes in 0.95 (16 Aug 95)
406- fix MSDOS small and medium model (now easier to adapt to any compiler)
407- inlined send_bits
408- fix the final (:-) bug for deflate with flush (output was correct but
409 not completely flushed in rare occasions).
410- default window size is same for compression and decompression
411 (it's now sufficient to set MAX_WBITS in zconf.h).
412- voidp -> voidpf and voidnp -> voidp (for consistency with other
413 typedefs and because voidnp was not near in large model).
414
415Changes in 0.94 (13 Aug 95)
416- support MSDOS medium model
417- fix deflate with flush (could sometimes generate bad output)
418- fix deflateReset (zlib header was incorrectly suppressed)
419- added support for VMS
420- allow a compression level in gzopen()
421- gzflush now calls fflush
422- For deflate with flush, flush even if no more input is provided.
423- rename libgz.a as libz.a
424- avoid complex expression in infcodes.c triggering Turbo C bug
425- work around a problem with gcc on Alpha (in INSERT_STRING)
426- don't use inline functions (problem with some gcc versions)
427- allow renaming of Byte, uInt, etc... with #define.
428- avoid warning about (unused) pointer before start of array in deflate.c
429- avoid various warnings in gzio.c, example.c, infblock.c, adler32.c, zutil.c
430- avoid reserved word 'new' in trees.c
431
432Changes in 0.93 (25 June 95)
433- temporarily disable inline functions
434- make deflate deterministic
435- give enough lookahead for PARTIAL_FLUSH
436- Set binary mode for stdin/stdout in minigzip.c for OS/2
437- don't even use signed char in inflate (not portable enough)
438- fix inflate memory leak for segmented architectures
439
440Changes in 0.92 (3 May 95)
441- don't assume that char is signed (problem on SGI)
442- Clear bit buffer when starting a stored block
443- no memcpy on Pyramid
444- suppressed inftest.c
445- optimized fill_window, put longest_match inline for gcc
446- optimized inflate on stored blocks.
447- untabify all sources to simplify patches
448
449Changes in 0.91 (2 May 95)
450- Default MEM_LEVEL is 8 (not 9 for Unix) as documented in zlib.h
451- Document the memory requirements in zconf.h
452- added "make install"
453- fix sync search logic in inflateSync
454- deflate(Z_FULL_FLUSH) now works even if output buffer too short
455- after inflateSync, don't scare people with just "lo world"
456- added support for DJGPP
457
458Changes in 0.9 (1 May 95)
459- don't assume that zalloc clears the allocated memory (the TurboC bug
460 was Mark's bug after all :)
461- let again gzread copy uncompressed data unchanged (was working in 0.71)
462- deflate(Z_FULL_FLUSH), inflateReset and inflateSync are now fully implemented
463- added a test of inflateSync in example.c
464- moved MAX_WBITS to zconf.h because users might want to change that.
465- document explicitly that zalloc(64K) on MSDOS must return a normalized
466 pointer (zero offset)
467- added Makefiles for Microsoft C, Turbo C, Borland C++
468- faster crc32()
469
470Changes in 0.8 (29 April 95)
471- added fast inflate (inffast.c)
472- deflate(Z_FINISH) now returns Z_STREAM_END when done. Warning: this
473 is incompatible with previous versions of zlib which returned Z_OK.
474- work around a TurboC compiler bug (bad code for b << 0, see infutil.h)
475 (actually that was not a compiler bug, see 0.81 above)
476- gzread no longer reads one extra byte in certain cases
477- In gzio destroy(), don't reference a freed structure
478- avoid many warnings for MSDOS
479- avoid the ERROR symbol which is used by MS Windows
480
481Changes in 0.71 (14 April 95)
482- Fixed more MSDOS compilation problems :( There is still a bug with
483 TurboC large model.
484
485Changes in 0.7 (14 April 95)
486- Added full inflate support.
487- Simplified the crc32() interface. The pre- and post-conditioning
488 (one's complement) is now done inside crc32(). WARNING: this is
489 incompatible with previous versions; see zlib.h for the new usage.
490
491Changes in 0.61 (12 April 95)
492- workaround for a bug in TurboC. example and minigzip now work on MSDOS.
493
494Changes in 0.6 (11 April 95)
495- added minigzip.c
496- added gzdopen to reopen a file descriptor as gzFile
497- added transparent reading of non-gziped files in gzread.
498- fixed bug in gzread (don't read crc as data)
499- fixed bug in destroy (gzio.c) (don't return Z_STREAM_END for gzclose).
500- don't allocate big arrays in the stack (for MSDOS)
501- fix some MSDOS compilation problems
502
503Changes in 0.5:
504- do real compression in deflate.c. Z_PARTIAL_FLUSH is supported but
505 not yet Z_FULL_FLUSH.
506- support decompression but only in a single step (forced Z_FINISH)
507- added opaque object for zalloc and zfree.
508- added deflateReset and inflateReset
509- added a variable zlib_version for consistency checking.
510- renamed the 'filter' parameter of deflateInit2 as 'strategy'.
511 Added Z_FILTERED and Z_HUFFMAN_ONLY constants.
512
513Changes in 0.4:
514- avoid "zip" everywhere, use zlib instead of ziplib.
515- suppress Z_BLOCK_FLUSH, interpret Z_PARTIAL_FLUSH as block flush
516 if compression method == 8.
517- added adler32 and crc32
518- renamed deflateOptions as deflateInit2, call one or the other but not both
519- added the method parameter for deflateInit2.
520- added inflateInit2
521- simplied considerably deflateInit and inflateInit by not supporting
522 user-provided history buffer. This is supported only in deflateInit2
523 and inflateInit2.
524
525Changes in 0.3:
526- prefix all macro names with Z_
527- use Z_FINISH instead of deflateEnd to finish compression.
528- added Z_HUFFMAN_ONLY
529- added gzerror()
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