AuroraMiddleware/lz4
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933 Commits

Author SHA1 Message Date
Yann Collet
b7c6fc9f61 minor refactor of lz4io 
for readability.
Mostly around --list capability
 2020-11-13 10:57:40 -08:00
Yann Collet
86f5e9d0f4 minor : lz4frame include stdlib only if needed 2020-11-09 21:23:56 -08:00
Yann Collet
a296839802 changed LZ4_calloc() to a 2-arguments signature 
to remain similar to stdlib's calloc().

Updated test to use c++ compiler for stricter signature check.
 2020-11-09 08:44:26 -08:00
Yann Collet
44b13db532 Merge branch 'dev' into customMem 2020-11-08 23:26:19 -08:00
Yann Collet
52646e8d75 first proposal for LZ4_USER_MEMORY_FUNCTIONS 
makes it possible to replace at link time
malloc, calloc and free
by user-provided functions
which must be named LZ4_malloc(), LZ4_calloc() and LZ4_free().

answer #937
 2020-11-08 21:17:32 -08:00
Yann Collet
9cf3f106a8
Merge pull request #944 from lz4/fix874 
fix #874
 2020-11-08 20:48:20 -08:00
Yann Collet
b8cd01183f
Merge pull request #945 from lz4/fix926 
fixed remaining ubsan warnings
 2020-11-08 20:47:19 -08:00
Yann Collet
2a2b10f192 fixed remaining ubsan warnings 2020-11-08 18:08:43 -08:00
Yann Collet
2964b8a6f6 fix #874 
coverity reported a warning regarding a memcpy() overwrite.
This is a false positive (the memory area is large enough),
but it's true that it's not trivial to determine (encompassing struct),
and it's proper anyway to only memcpy() just the right amount of data.
 2020-11-08 13:21:58 -08:00
Yann Collet
be634559e3 update obsolete section documentation 
and update manuals.
fix #712
 2020-11-08 12:54:59 -08:00
Yann Collet
e251a84025 fix minor UBs 
- check alignment before casting a pointer
- saveDict : don't memmove() on NULL dst
 2020-11-07 19:42:57 -08:00
Yann Collet
a2222a879f fix #926 
fix incorrect behavior of LZ4_saveDictHC()
when invoked right after initialization.
 2020-11-07 18:12:26 -08:00
Yann Collet
1d02141bf8
Merge pull request #941 from lz4/revertinline 
Revert "Replace "static" to "LZ4_FORCE_INLINE" for small functions"
 2020-11-07 17:18:04 -08:00
Yann Collet
f61eeb7793 Revert "Replace "static" to "LZ4_FORCE_INLINE" for small functions" 
This reverts commit 0e3933edd4.
 2020-11-07 11:02:30 -08:00
Yann Collet
d4bfcf8489 fix #935 
minor: identical declaration and prototypes of `LZ4HC_compress_optimal()`

also :
very minor optimization of `LZ4_memcpy_using_offset()`
 2020-11-07 10:06:52 -08:00
Yann Collet
27959b43ec LZ4F_decompress requires a valid dctx state 
This is now explicitly documented and asserted.
fix #927
 2020-11-06 20:46:35 -08:00
Yann Collet
b5e2a4acd9
Merge pull request #936 from lz4/alignTest 
More alignment tests
 2020-11-06 20:27:42 -08:00
Yann Collet
67e661a2ad static state size 
for better inter-version compatibility
 2020-11-06 18:26:13 -08:00
Yann Collet
211d653ff8 re-enable alignment test on all targets 2020-11-06 16:43:14 -08:00
Yann Collet
0c56f838ed unified internal state declaration 
align on `void*` instead : there is no `long long` inside the structure
 2020-11-06 16:15:51 -08:00
Yann Collet
78433070ab document LZ4_ALIGN_TEST 2020-11-06 14:48:43 -08:00
Yann Collet
e968a24129 unified alignment test 
across lz4.c and lz4hc.c
 2020-11-06 14:46:48 -08:00
Yann Collet
664427aa8f
Merge pull request #930 from remittor-pr/fix_msvc 
Fix: The "inline" specifier do not use for LZ4_wildCopy8 and LZ4_wildCopy32
 2020-10-31 01:44:21 -07:00
remittor
0e3933edd4 Replace "static" to "LZ4_FORCE_INLINE" for small functions 
The "static" specifier does not guarantee that the function will be inlined.
 2020-10-07 09:52:40 +03:00
remittor
749bd91a06 Replace define LZ4_FORCE_O2_INLINE_GCC_PPC64LE to LZ4_FORCE_INLINE 
There is no reason to separate these two definitions!
 2020-10-07 09:51:08 +03:00
remittor
c4792cdfa9 Fix: The "inline" specifier do not use for LZ4_wildCopy8 and LZ4_wildCopy32 
This problem was reproduced on MSVC 2015 (32-bit). Both functions were called using the operator "call".
 2020-10-06 17:16:43 +03:00
remittor
c24e979063 [lz4hc] Made function LZ4HC_encodeSequence a human readable 2020-10-03 18:32:34 +03:00
Yann Collet
2631002f74 preserver alignment test on Visual Studio x64 
this it works fine in this environment
(only x86 is suspicious)
 2020-10-02 15:51:14 -07:00
Yann Collet
1e5ff76b36 add LZ4F_decompress() tests with (NULL,0) input and output 
fix one (rare & complex) issue discovered by this test
 2020-10-01 21:10:08 -07:00
Yann Collet
03f006a7ea make scan-build accept assert() 2020-10-01 10:48:22 -07:00
Yann Collet
1e31f1d25c fix bad init scenario 2020-09-30 22:51:17 -07:00
Yann Collet
fe74eb2031 added memcpy() related SA warning fixes 
memcpy() on NULL is UB, even if length is 0.
 2020-09-30 21:20:07 -07:00
Yann Collet
7d21f761c3 fix conversion warning 2020-09-29 21:53:42 -07:00
Yann Collet
40cc3aa9a2 Merge branch 'dev' into safixes 2020-09-29 17:21:59 -07:00
Yann Collet
ad2d2764c7 fix minor static analyzer warnings 
detected by scan-build, cppcheck and advanved compilation flags
fix #786
 2020-09-29 17:20:52 -07:00
Yann Collet
293713a4fa bump version number 
to v1.9.3
 2020-09-29 14:27:39 -07:00
Yann Collet
78f4fdbb89
Merge pull request #923 from lz4/fix784 
fix efficiency of LZ4_compress_HC_destSize()
 2020-09-28 14:04:56 -07:00
Yann Collet
ab89dda91d improved last literals run on LZ4_compress_destSize 
applying new more accurate formula from LZ4_compress_HC_destSize()

also : fix some minor display issue in tests/frametest
 2020-09-28 11:39:00 -07:00
Yann Collet
89736e4e27 ensure last match not too close to end 
must respect MFLIMIT distance from oend
 2020-09-27 23:59:56 -07:00
Yann Collet
a13c79d56d fix incorrect counting 
after truncation of last sequence
 2020-09-27 22:47:05 -07:00
Yann Collet
8a362a8ac8
Merge pull request #921 from lz4/doubleNull 
fix compressing into NULL
 2020-09-27 21:09:06 -07:00
Yann Collet
e7fe105ac6 fix efficiency of LZ4_compress_HC_destSize() 
LZ4_compress_HC_destSize() had a tendency
to discard its last match when this match overflowed specified dstBuffer limit.
The impact is generally moderate,
but occasionally huge,
typically when this last match is very large
(such as compressing a bunch of zeroes).

Issue #784 fixed for both Chain and Opt implementations.

Added a unit test suggested by @remittor checking this topic.
 2020-09-27 21:04:40 -07:00
Anton Kochkov
9730d91110 Fix compilation with TinyCC 2020-09-27 17:07:51 +08:00
Yann Collet
ee4f37d284 fix compressing into NULL 
fails properly
bug discovered by oss-fuzz
 2020-09-26 11:31:57 -07:00
Yann Collet
dc27b7ae41 comment bug on older versions of ZSTD_compress_destSize() 
following investigation in #859
 2020-09-17 20:59:01 -07:00
Yann Collet
10d2e1c694 fixed lz4frame with blocks of size 1 
properly track history
 2020-09-17 14:43:02 -07:00
Yann Collet
ee01df1271 added the actual code change 2020-09-16 23:46:39 -07:00
Yann Collet
c5d6f8a8be fix #783 
LZ4_decompress_safe_partial()
now also supports a scenario where
nb_bytes_to_generate is <= block_decompressed_size
And
nb_bytes_to_read is >= block_compressed_size.

Previously, the only supported scenario was
nb_bytes_to_read == block_compress_size.

Pay attention that,
if nb_bytes_to_read is > block_compressed_size,
then, necessarily, it requires that
nb_bytes_to_generate is <= block_decompress_size.
If both are larger, it will generate corrupted data.
 2020-08-27 00:17:57 -07:00
Yann Collet
3e3a006c6f Merge branch 'dev' into extraInput 2020-08-26 23:20:28 -07:00
Yann Collet
5243173b23 added documentation about LZ4_FORCE_SW_BITCOUNT 
Also : added memory-frugal software byte count for big endian 64-bit cpus.
Disabled by default.
 2020-08-25 22:17:29 -07:00