v1.5.6 #3984
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v1.5.6 #3984
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Add Bazel module instructions to README.md
Clarify that a stream containing too many Huffman weights is invalid
List of updates : https://github.com/Cyan4973/xxHash/releases/tag/v0.8.2 This is also a preparation task before taking care of #3819
…_3.5 [cmake] Require CMake version 3.5 or newer
Linux started providing intptr_t in <linux/types.h> so we no longer need to define it here. https://lkml.kernel.org/r/ed66b9e4-1fb7-45be-9bb9-d4bc291c691f@p183
ZSTD_resetDStream() is deprecated and replaced by ZSTD_DCtx_reset(). This removes deprecation warnings from the kernel build. This change is a no-op, see the docs suggesting this replacement. https://github.com/facebook/zstd/blob/fcbf2fde9ac7ce1562c7b3a394350e764bcb580f/lib/zstd.h#L2655-L2663
We only use this constant when `DEBUGLEVEL>=2`, but we get -Werror=pedantic errors for empty translation units, so still define it except in kernel environments. Backport from the kernel: https://lore.kernel.org/lkml/20230616144400.172683-1-ben.dooks@codethink.co.uk/
gcc in the linux kernel was not unrolling the inner loops of the Huffman decoder, which was destroying decoding performance. The compiler was generating crazy code with all sorts of branches. I suspect because of Spectre mitigations, but I'm not certain. Once the loops were manually unrolled, performance was restored. Additionally, when gcc couldn't prove that the variable left shift in the 4X2 decode loop wasn't greater than 63, it inserted checks to verify it. To fix this, mask `entry.nbBits & 0x3F`, which allows gcc to eliete this check. This is a no op, because `entry.nbBits` is guaranteed to be less than 64. Lastly, introduce the `HUF_DISABLE_FAST_DECODE` macro to disable the fast C loops for Issue #3762. So if even after this change, there is a performance regression, users can opt-out at compile time.
* Rename `ilimit` to `ilowest` and set it equal to `src` instead of `src + 6 + 8`. This is safe because the fast decoding loops guarantee to never read below `ilowest` already. This allows the fast decoder to run for at least two more iterations, because it consumes at most 7 bytes per iteration. * Continue the fast loop all the way until the number of safe iterations is 0. Initially, I thought that when it got towards the end, the computation of how many iterations of safe might become expensive. But it ends up being slower to have to decode each of the 4 streams individually, which makes sense. This drastically speeds up the Huffman decoder on the `github` dataset for the issue raised in #3762, measured with `zstd -b1e1r github/`. | Decoder | Speed before | Speed after | |----------|--------------|-------------| | Fallback | 477 MB/s | 477 MB/s | | Fast C | 384 MB/s | 492 MB/s | | Assembly | 385 MB/s | 501 MB/s | We can also look at the speed delta for different block sizes of silesia using `zstd -b1e1r silesia.tar -B#`. | Decoder | -B1K ∆ | -B2K ∆ | -B4K ∆ | -B8K ∆ | -B16K ∆ | -B32K ∆ | -B64K ∆ | -B128K ∆ | |----------|--------|--------|--------|--------|---------|---------|---------|----------| | Fast C | +11.2% | +8.2% | +6.1% | +4.4% | +2.7% | +1.5% | +0.6% | +0.2% | | Assembly | +12.5% | +9.0% | +6.2% | +3.6% | +1.5% | +0.7% | +0.2% | +0.03% |
`HUF_DecompressFastArgs_init()` was adding 0 to NULL. Fix it by exiting early for empty outputs. This is no change in behavior, because the function was already exiting 0 in this case, just slightly later.
update xxhash library to v0.8.2
This PR introduces no functional changes. It attempts to change all
macros currently using `{ }` or some variant of that to to
`do { } while (0)`, and introduces trailing `;` where necessary.
There were no bugs found during this migration.
The bug in Visual Studios warning on this has been fixed since VS2015.
Additionally, we have several instances of `do { } while (0)` which have
been present for several releases, so we don't have to worry about
breaking peoples builds.
Fixes Issue #3830.
…hts as 0 is invalid
The patch adds a validation to ensure that the last field, which is reserved, must be all-zeroes in ZSTD_decodeSeqHeaders. This prevents potential corruption from going undetected. Fixes an issue where corrupted input could lead to undefined behavior due to improper validation of reserved bits. Signed-off-by: aimuz <mr.imuz@gmail.com>
Move offload API params into ZSTD_CCtx_params
12.4 is EOL as of the end of December 2023, and pkg installation will start failing some time after that so remove those jobs now.
Update FreeBSD CI: drop 12.4 (nearly EOL)
Clang 16 (which is the system compiler in FreeBSD 14.0) no longer allows K&R function definitions. Formatting of the changes matches current zlib.
If the relevant allocation returns NULL, ZSTD_createCDict_advanced_internal() will return NULL. But ZSTD_createCDict_advanced2() doesn't check for this and attempts to use the returned pointer anyway, which leads to a segfault.
Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 3.1.3 to 4.0.0. - [Release notes](https://github.com/actions/upload-artifact/releases) - [Commits](actions/upload-artifact@a8a3f3a...c7d193f) --- updated-dependencies: - dependency-name: actions/upload-artifact dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com>
when requested CBlockSize is too low, bound it to the minimum instead of returning an error.
Fixes 2 issue in `simple_decompress.c`: 1. Wrong type used for storing the results of `ZSTD_findDecompressedSize` resulting in never matching to `ZSTD_CONTENTSIZE_ERROR` or `ZSTD_CONTENTSIZE_UNKNOWN`. 2. Experimental API is used (`ZSTD_findDecompressedSize`) without defining `ZSTD_STATIC_LINKING_ONLY`.
Fails on errors when building fuzzers with `fuzz.py` (adds `Werror`). Currently allows `declaration-after-statement`, `c++-compat` and `deprecated` as they are abundant in code (some fixes to `declaration-after-statement` are presented in this commit).
* fuzzing and bugfixes for magicless format * reset dctx before each decompression * do not memcmp empty buffers * nit: decompressor errata
This function was seriously flawed: * It didn't do output bounds checks * It produced invalid sequences when an uncompressed or RLE block was emitted * It produced invalid sequences when the block splitter was enabled * It produced invalid sequences when ZSTD_c_targetCBlockSize was enabled I've attempted to fix these issues, but this function is just a bad idea, so I've marked it as deprecated and unsafe. We should replace it with `ZSTD_extractSequences()` which operates on a compressed frame.
Fix & fuzz ZSTD_generateSequences
Fail on errors when building fuzzers
[cmake] Emit warnings for contradictory build settings
Document the process for adding a new fuzzer
Doc update
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@Cyan4973 did you forget to make a tag? |
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[](https://renovatebot.com) This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [com_github_facebook_zstd](https://togithub.com/facebook/zstd) | http_archive | patch | `v1.5.5` -> `v1.5.6` | --- ### Release Notes <details> <summary>facebook/zstd (com_github_facebook_zstd)</summary> ### [`v1.5.6`](https://togithub.com/facebook/zstd/releases/tag/v1.5.6): Zstandard v1.5.6 - Chrome Edition [Compare Source](https://togithub.com/facebook/zstd/compare/v1.5.5-kernel...v1.5.6) This release highlights the deployment of Google [Chrome 123](https://developer.chrome.com/blog/new-in-chrome-123), introducing `zstd-encoding` for Web traffic, introduced as a preferable option for compression of dynamic contents. With limited web server support for `zstd-encoding` due to its novelty, we are launching an updated Zstandard version to facilitate broader adoption. ##### New stable parameter `ZSTD_c_targetCBlockSize` Using `zstd` compression for large documents over the Internet, data is segmented into smaller blocks of up to 128 KB, for incremental updates. This is crucial for applications like Chrome that process parts of documents as they arrive. However, on slow or congested networks, there can be some brief unresponsiveness in the middle of a block transmission, delaying update. To mitigate such scenarios, `libzstd` introduces the new parameter `ZSTD_c_targetCBlockSize`, enabling the division of blocks into even smaller segments to enhance initial byte delivery speed. Activating this feature incurs a cost, both runtime (equivalent to -2% speed at level 8) and a slight compression efficiency decrease (<0.1%), but offers some interesting latency reduction, notably beneficial in areas with less powerful network infrastructure. ##### Granular binary size selection `libzstd` provides build customization, including options to compile only the compression or decompression modules, minimizing binary size. Enhanced in `v1.5.6` ([source](https://togithub.com/facebook/zstd/tree/dev/lib#modular-build)), it now allows for even finer control by enabling selective inclusion or exclusion of specific components within these modules. This advancement aids applications needing precise binary size management. ##### Miscellaneous Enhancements This release includes various minor enhancements and bug fixes to enhance user experience. Key updates include an expanded list of recognized compressed file suffixes for the `--exclude-compressed` flag, improving efficiency by skipping presumed incompressible content. Furthermore, compatibility has been broadened to include additional chipsets (`sparc64`, `ARM64EC`, `risc-v`) and operating systems (`QNX`, `AIX`, `Solaris`, `HP-UX`). #### Change Log api: Promote `ZSTD_c_targetCBlockSize` to Stable API by [@​felixhandte](https://togithub.com/felixhandte) api: new experimental `ZSTD_d_maxBlockSize` parameter, to reduce streaming decompression memory, by [@​terrelln](https://togithub.com/terrelln) perf: improve performance of param `ZSTD_c_targetCBlockSize`, by [@​Cyan4973](https://togithub.com/Cyan4973) perf: improved compression of arrays of integers at high compression, by [@​Cyan4973](https://togithub.com/Cyan4973) lib: reduce binary size with selective built-time exclusion, by [@​felixhandte](https://togithub.com/felixhandte) lib: improved huffman speed on small data and linux kernel, by [@​terrelln](https://togithub.com/terrelln) lib: accept dictionaries with partial literal tables, by [@​terrelln](https://togithub.com/terrelln) lib: fix CCtx size estimation with external sequence producer, by [@​embg](https://togithub.com/embg) lib: fix corner case decoder behaviors, by [@​Cyan4973](https://togithub.com/Cyan4973) and [@​aimuz](https://togithub.com/aimuz) lib: fix zdict prototype mismatch in static_only mode, by [@​ldv-alt](https://togithub.com/ldv-alt) lib: fix several bugs in magicless-format decoding, by [@​embg](https://togithub.com/embg) cli: add common compressed file types to `--exclude-compressed` by [@​daniellerozenblit](https://togithub.com/daniellerozenblit) (requested by [@​dcog989](https://togithub.com/dcog989)) cli: fix mixing `-c` and `-o` commands with `--rm`, by [@​Cyan4973](https://togithub.com/Cyan4973) cli: fix erroneous exclusion of hidden files with `--output-dir-mirror` by [@​felixhandte](https://togithub.com/felixhandte) cli: improved time accuracy on BSD, by [@​felixhandte](https://togithub.com/felixhandte) cli: better errors on argument parsing, by [@​KapJI](https://togithub.com/KapJI) tests: better compatibility with older versions of `grep`, by [@​Cyan4973](https://togithub.com/Cyan4973) tests: lorem ipsum generator as default content generator, by [@​Cyan4973](https://togithub.com/Cyan4973) build: cmake improvements by [@​terrelln](https://togithub.com/terrelln), [@​sighingnow](https://togithub.com/sighingnow), [@​gjasny](https://togithub.com/gjasny), [@​JohanMabille](https://togithub.com/JohanMabille), [@​Saverio976](https://togithub.com/Saverio976), [@​gruenich](https://togithub.com/gruenich), [@​teo-tsirpanis](https://togithub.com/teo-tsirpanis) build: bazel support, by [@​jondo2010](https://togithub.com/jondo2010) build: fix cross-compiling for AArch64 with lld by [@​jcelerier](https://togithub.com/jcelerier) build: fix Apple platform compatibility, by [@​nidhijaju](https://togithub.com/nidhijaju) build: fix Visual 2012 and lower compatibility, by [@​Cyan4973](https://togithub.com/Cyan4973) build: improve win32 support, by [@​DimitriPapadopoulos](https://togithub.com/DimitriPapadopoulos) build: better C90 compliance for zlibWrapper, by [@​emaste](https://togithub.com/emaste) port: make: fat binaries on macos, by [@​mredig](https://togithub.com/mredig) port: ARM64EC compatibility for Windows, by [@​dunhor](https://togithub.com/dunhor) port: QNX support by [@​klausholstjacobsen](https://togithub.com/klausholstjacobsen) port: MSYS2 and Cygwin makefile installation and test support, by [@​QBos07](https://togithub.com/QBos07) port: risc-v support validation in CI, by [@​Cyan4973](https://togithub.com/Cyan4973) port: sparc64 support validation in CI, by [@​Cyan4973](https://togithub.com/Cyan4973) port: AIX compatibility, by [@​likema](https://togithub.com/likema) port: HP-UX compatibility, by [@​likema](https://togithub.com/likema) doc: Improved specification accuracy, by [@​elasota](https://togithub.com/elasota) bug: Fix and deprecate ZSTD_generateSequences ([#​3981](https://togithub.com/facebook/zstd/issues/3981)), by [@​terrelln](https://togithub.com/terrelln) #### Full change list (auto-generated) - Add win32 to windows-artifacts.yml by [@​Kim-SSi](https://togithub.com/Kim-SSi) in [facebook/zstd#3600 - Fix mmap-dict help output by [@​daniellerozenblit](https://togithub.com/daniellerozenblit) in [facebook/zstd#3601 - \[oss-fuzz] Fix simple_round_trip fuzzer with overlapping decompression by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3612 - Reduce streaming decompression memory by (128KB - blockSizeMax) by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3616 - removed travis & appveyor scripts by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3621 - Add ZSTD_d_maxBlockSize parameter by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3617 - \[doc] add decoder errata paragraph by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3620 - add makefile entry to build fat binary on macos by [@​mredig](https://togithub.com/mredig) in [facebook/zstd#3614 - Disable unused variable warning in msan configurations by [@​danlark1](https://togithub.com/danlark1) in [facebook/zstd#3624 [facebook/zstd#3634 - Allow Build-Time Exclusion of Individual Compression Strategies by [@​felixhandte](https://togithub.com/felixhandte) in [facebook/zstd#3623 - Get zstd working with ARM64EC on Windows by [@​dunhor](https://togithub.com/dunhor) in [facebook/zstd#3636 - minor : update streaming_compression example by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3631 - Fix UBSAN issue (zero addition to NULL) by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3658 - Add options in Makefile to cmake by [@​sighingnow](https://togithub.com/sighingnow) in [facebook/zstd#3657 - fix a minor inefficiency in compress_superblock by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3668 - Fixed a bug in the educational decoder by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3659 - changed LLU suffix into ULL for Visual 2012 and lower by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3664 - fixed decoder behavior when nbSeqs==0 is encoded using 2 bytes by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3669 - detect extraneous bytes in the Sequences section by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3674 - Bitstream produces only zeroes after an overflow event by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3676 - Update FreeBSD CI images to latest supported releases by [@​emaste](https://togithub.com/emaste) in [facebook/zstd#3684 - Clean up a false error message in the LDM debug log by [@​embg](https://togithub.com/embg) in [facebook/zstd#3686 - Hide ASM symbols on Apple platforms by [@​nidhijaju](https://togithub.com/nidhijaju) in [facebook/zstd#3688 - Changed the decoding loop to detect more invalid cases of corruption sooner by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3677 - Fix Intel Xcode builds with assembly by [@​gjasny](https://togithub.com/gjasny) in [facebook/zstd#3665 - Save one byte on the frame epilogue by [@​Coder-256](https://togithub.com/Coder-256) in [facebook/zstd#3700 - Update fileio.c: fix build failure with enabled LTO by [@​LocutusOfBorg](https://togithub.com/LocutusOfBorg) in [facebook/zstd#3695 - fileio_asyncio: handle malloc fails in AIO_ReadPool_create by [@​void0red](https://togithub.com/void0red) in [facebook/zstd#3704 - Fix typographical error in README.md by [@​nikohoffren](https://togithub.com/nikohoffren) in [facebook/zstd#3701 - Fixed typo by [@​alexsifivetw](https://togithub.com/alexsifivetw) in [facebook/zstd#3712 - Improve dual license wording in README by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3718 - Unpoison Workspace Memory Before Custom-Free by [@​felixhandte](https://togithub.com/felixhandte) in [facebook/zstd#3725 - added ZSTD_decompressDCtx() benchmark option to fullbench by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3726 - No longer reject dictionaries with literals maxSymbolValue < 255 by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3731 - fix: ZSTD_BUILD_DECOMPRESSION message by [@​0o001](https://togithub.com/0o001) in [facebook/zstd#3728 - Updated Makefiles for full MSYS2 and Cygwin installation and testing … by [@​QBos07](https://togithub.com/QBos07) in [facebook/zstd#3720 - Work around nullptr-with-nonzero-offset warning by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3738 - Fix & refactor Huffman repeat tables for dictionaries by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3737 - zdictlib: fix prototype mismatch by [@​ldv-alt](https://togithub.com/ldv-alt) in [facebook/zstd#3733 - Fixed zstd cmake shared build on windows by [@​JohanMabille](https://togithub.com/JohanMabille) in [facebook/zstd#3739 - Added qnx in the posix test section of platform.h by [@​klausholstjacobsen](https://togithub.com/klausholstjacobsen) in [facebook/zstd#3745 - added some documentation on ZSTD_estimate\*Size() variants by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3755 - Improve macro guards for ZSTD_assertValidSequence by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3770 - Stop suppressing pointer-overflow UBSAN errors by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3776 - fix x32 tests on Github CI by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3777 - Fix new typos found by codespell by [@​DimitriPapadopoulos](https://togithub.com/DimitriPapadopoulos) in [facebook/zstd#3771 - Do not test WIN32, instead test \_WIN32 by [@​DimitriPapadopoulos](https://togithub.com/DimitriPapadopoulos) in [facebook/zstd#3772 - Fix a very small formatting typo in the lib/README.md file by [@​dloidolt](https://togithub.com/dloidolt) in [facebook/zstd#3763 - Fix pzstd Makefile to allow setting `DESTDIR` and `BINDIR` separately by [@​paulmenzel](https://togithub.com/paulmenzel) in [facebook/zstd#3752 - Remove FlexArray pattern from ZSTDMT by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3786 - solving flexArray issue [#​3785](https://togithub.com/facebook/zstd/issues/3785) in fse by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3789 - Add doc on how to use it with cmake FetchContent by [@​Saverio976](https://togithub.com/Saverio976) in [facebook/zstd#3795 - Correct FSE probability bit consumption in specification by [@​elasota](https://togithub.com/elasota) in [facebook/zstd#3806 - Add Bazel module instructions to README.md by [@​jondo2010](https://togithub.com/jondo2010) in [facebook/zstd#3812 - Clarify that a stream containing too many Huffman weights is invalid by [@​elasota](https://togithub.com/elasota) in [facebook/zstd#3813 - \[cmake] Require CMake version 3.5 or newer by [@​gruenich](https://togithub.com/gruenich) in [facebook/zstd#3807 - Three fixes for the Linux kernel by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3822 - \[huf] Improve fast huffman decoding speed in linux kernel by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3826 - \[huf] Improve fast C & ASM performance on small data by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3827 - update xxhash library to v0.8.2 by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3820 - Modernize macros to use `do { } while (0)` by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3831 - Clarify that the presence of weight value 1 is required, and a lone implied 1 weight is invalid by [@​elasota](https://togithub.com/elasota) in [facebook/zstd#3814 - Move offload API params into ZSTD_CCtx_params by [@​embg](https://togithub.com/embg) in [facebook/zstd#3839 - Update FreeBSD CI: drop 12.4 (nearly EOL) by [@​emaste](https://togithub.com/emaste) in [facebook/zstd#3845 - Make offload API compatible with static CCtx by [@​embg](https://togithub.com/embg) in [facebook/zstd#3854 - zlibWrapper: convert to C89 / ANSI C by [@​emaste](https://togithub.com/emaste) in [facebook/zstd#3846 - Fix a nullptr dereference in ZSTD_createCDict_advanced2() by [@​michoecho](https://togithub.com/michoecho) in [facebook/zstd#3847 - Cirrus-CI: Add FreeBSD 14 by [@​emaste](https://togithub.com/emaste) in [facebook/zstd#3855 - CI: meson: use builtin handling for MSVC by [@​eli-schwartz](https://togithub.com/eli-schwartz) in [facebook/zstd#3858 - cli: better errors on argument parsing by [@​KapJI](https://togithub.com/KapJI) in [facebook/zstd#3850 - Clarify that probability tables must not contain non-zero probabilities for invalid values by [@​elasota](https://togithub.com/elasota) in [facebook/zstd#3817 - \[x-compile] Fix cross-compiling for AArch64 with lld by [@​jcelerier](https://togithub.com/jcelerier) in [facebook/zstd#3760 - playTests.sh does no longer needs grep -E by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3865 - minor: playTests.sh more compatible with older versions of grep by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3877 - disable Intel CET Compatibility tests by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3884 - improve cmake test by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3883 - add sparc64 compilation test by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3886 - add a lorem ipsum generator by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3890 - Update Dependency in Intel CET Test; Re-Enable Test by [@​felixhandte](https://togithub.com/felixhandte) in [facebook/zstd#3893 - Improve compression of Arrays of Integers (High compression mode) by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3895 - \[Zstd] Less verbose log for patch mode. by [@​sandreenko](https://togithub.com/sandreenko) in [facebook/zstd#3899 - fix [`5921623`](https://togithub.com/facebook/zstd/commit/5921623844651008) by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3900 - Fix fuzz issue [`5131069`](https://togithub.com/facebook/zstd/commit/5131069967892480) by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3902 - Advertise Availability of Security Vulnerability Notifications by [@​felixhandte](https://togithub.com/felixhandte) in [facebook/zstd#3909 - updated setup-msys2 to v2.22.0 by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3914 - Lorem Ipsum generator update by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3913 - Reduce scope of variables by [@​gruenich](https://togithub.com/gruenich) in [facebook/zstd#3903 - Improve speed of ZSTD_c_targetCBlockSize by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3915 - More regular block sizes with `targetCBlockSize` by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3917 - removed sprintf usage from zstdcli.c by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3916 - Export a `zstd::libzstd` CMake target if only static or dynamic linkage is specified. by [@​teo-tsirpanis](https://togithub.com/teo-tsirpanis) in [facebook/zstd#3811 - fix version of actions/checkout by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3926 - minor Makefile refactoring by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3753 - lib/decompress: check for reserved bit corruption in zstd by [@​aimuz](https://togithub.com/aimuz) in [facebook/zstd#3840 - Fix state table formatting by [@​elasota](https://togithub.com/elasota) in [facebook/zstd#3816 - Specify offset 0 as invalid and specify required fixup behavior by [@​elasota](https://togithub.com/elasota) in [facebook/zstd#3824 - update -V documentation by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3928 - fix LLU->ULL by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3929 - Fix building xxhash on AIX 5.1 by [@​likema](https://togithub.com/likema) in [facebook/zstd#3860 - Fix building on HP-UX 11.11 PA-RISC by [@​likema](https://togithub.com/likema) in [facebook/zstd#3862 - Fix AsyncIO reading seed queueing by [@​yoniko](https://togithub.com/yoniko) in [facebook/zstd#3940 - Use ZSTD_LEGACY_SUPPORT=5 in "make test" by [@​embg](https://togithub.com/embg) in [facebook/zstd#3943 - Pin sanitizer CI jobs to ubuntu-20.04 by [@​embg](https://togithub.com/embg) in [facebook/zstd#3945 - chore: fix some typos by [@​acceptacross](https://togithub.com/acceptacross) in [facebook/zstd#3949 - new method to deal with offset==0 erroneous edge case by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3937 - add tests inspired from [#​2927](https://togithub.com/facebook/zstd/issues/2927) by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3948 - cmake refactor: move HP-UX specific logic into its own function by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3946 - Fix [#​3719](https://togithub.com/facebook/zstd/issues/3719) : mixing -c, -o and --rm by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3942 - minor: fix incorrect debug level by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3936 - add RISC-V emulation tests to Github CI by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3934 - prevent XXH64 from being autovectorized by XXH512 by default by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3933 - Stop Hardcoding the POSIX Version on BSDs by [@​felixhandte](https://togithub.com/felixhandte) in [facebook/zstd#3952 - Convert the CircleCI workflow to a GitHub Actions workflow by [@​jk0](https://togithub.com/jk0) in [facebook/zstd#3901 - Add common compressed file types to --exclude-compressed by [@​daniellerozenblit](https://togithub.com/daniellerozenblit) in [facebook/zstd#3951 - Export ZSTD_LEGACY_SUPPORT in tests/Makefile by [@​embg](https://togithub.com/embg) in [facebook/zstd#3955 - Exercise ZSTD_findDecompressedSize() in the simple decompression fuzzer by [@​embg](https://togithub.com/embg) in [facebook/zstd#3959 - Update `ZSTD_RowFindBestMatch` comment by [@​yoniko](https://togithub.com/yoniko) in [facebook/zstd#3947 - Add the zeroSeq sample by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3954 - \[cpu] Backport fix for rbx clobbering on Windows with Clang by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3957 - Do not truncate file name in verbose mode by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3956 - updated documentation by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3958 - \[asm]\[aarch64] Mark that BTI and PAC are supported by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3961 - Use `utimensat()` on FreeBSD by [@​felixhandte](https://togithub.com/felixhandte) in [facebook/zstd#3960 - reduce the amount of #include in cover.h by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3962 - Remove Erroneous Exclusion of Hidden Files and Folders in `--output-dir-mirror` by [@​felixhandte](https://togithub.com/felixhandte) in [facebook/zstd#3963 - Promote `ZSTD_c_targetCBlockSize` Parameter to Stable API by [@​felixhandte](https://togithub.com/felixhandte) in [facebook/zstd#3964 - \[cmake] Always create libzstd target by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3965 - Remove incorrect docs regarding ZSTD_findFrameCompressedSize() by [@​embg](https://togithub.com/embg) in [facebook/zstd#3967 - add line number to debug traces by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3966 - bump version number by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3969 - Export zstd's public headers via BUILD_INTERFACE by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3968 - Fix bug with streaming decompression of magicless format by [@​embg](https://togithub.com/embg) in [facebook/zstd#3971 - pzstd: use c++14 without conditions by [@​kanavin](https://togithub.com/kanavin) in [facebook/zstd#3682 - Fix bugs in simple decompression fuzzer by [@​yoniko](https://togithub.com/yoniko) in [facebook/zstd#3978 - Fuzzing and bugfixes for magicless-format decoding by [@​embg](https://togithub.com/embg) in [facebook/zstd#3976 - Fix & fuzz ZSTD_generateSequences by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3981 - Fail on errors when building fuzzers by [@​yoniko](https://togithub.com/yoniko) in [facebook/zstd#3979 - \[cmake] Emit warnings for contradictory build settings by [@​terrelln](https://togithub.com/terrelln) in [facebook/zstd#3975 - Document the process for adding a new fuzzer by [@​embg](https://togithub.com/embg) in [facebook/zstd#3982 - Fix -Werror=pointer-arith in fuzzers by [@​embg](https://togithub.com/embg) in [facebook/zstd#3983 - Doc update by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3977 - v1.5.6 by [@​Cyan4973](https://togithub.com/Cyan4973) in [facebook/zstd#3984 #### New Contributors - [@​Kim-SSi](https://togithub.com/Kim-SSi) made their first contribution in [facebook/zstd#3600 - [@​mredig](https://togithub.com/mredig) made their first contribution in [facebook/zstd#3614 - [@​dunhor](https://togithub.com/dunhor) made their first contribution in [facebook/zstd#3636 - [@​sighingnow](https://togithub.com/sighingnow) made their first contribution in [facebook/zstd#3657 - [@​nidhijaju](https://togithub.com/nidhijaju) made their first contribution in [facebook/zstd#3688 - [@​gjasny](https://togithub.com/gjasny) made their first contribution in [facebook/zstd#3665 - [@​Coder-256](https://togithub.com/Coder-256) made their first contribution in [facebook/zstd#3700 - [@​LocutusOfBorg](https://togithub.com/LocutusOfBorg) made their first contribution in [facebook/zstd#3695 - [@​void0red](https://togithub.com/void0red) made their first contribution in [facebook/zstd#3704 - [@​nikohoffren](https://togithub.com/nikohoffren) made their first contribution in [facebook/zstd#3701 - [@​alexsifivetw](https://togithub.com/alexsifivetw) made their first contribution in [facebook/zstd#3712 - [@​0o001](https://togithub.com/0o001) made their first contribution in [facebook/zstd#3728 - [@​QBos07](https://togithub.com/QBos07) made their first contribution in [facebook/zstd#3720 - [@​JohanMabille](https://togithub.com/JohanMabille) made their first contribution in [facebook/zstd#3739 - [@​klausholstjacobsen](https://togithub.com/klausholstjacobsen) made their first contribution in [facebook/zstd#3745 - [@​Saverio976](https://togithub.com/Saverio976) made their first contribution in [facebook/zstd#3795 - [@​elasota](https://togithub.com/elasota) made their first contribution in [facebook/zstd#3806 - [@​jondo2010](https://togithub.com/jondo2010) made their first contribution in [facebook/zstd#3812 - [@​gruenich](https://togithub.com/gruenich) made their first contribution in [facebook/zstd#3807 - [@​michoecho](https://togithub.com/michoecho) made their first contribution in [facebook/zstd#3847 - [@​KapJI](https://togithub.com/KapJI) made their first contribution in [facebook/zstd#3850 - [@​jcelerier](https://togithub.com/jcelerier) made their first contribution in [facebook/zstd#3760 - [@​sandreenko](https://togithub.com/sandreenko) made their first contribution in [facebook/zstd#3899 - [@​teo-tsirpanis](https://togithub.com/teo-tsirpanis) made their first contribution in [facebook/zstd#3811 - [@​aimuz](https://togithub.com/aimuz) made their first contribution in [facebook/zstd#3840 - [@​acceptacross](https://togithub.com/acceptacross) made their first contribution in [facebook/zstd#3949 - [@​jk0](https://togithub.com/jk0) made their first contribution in [facebook/zstd#3901 **Full Changelog**: facebook/zstd@v1.5.5...v1.5.6 </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. 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V1.5.6 (Mar 2024)
api: Promote
ZSTD_c_targetCBlockSizeto Stable API by @felixhandteapi: new
ZSTD_d_maxBlockSizeexperimental parameter, to reduce streaming decompression memory, by @terrellnperf: improve performance of param
ZSTD_c_targetCBlockSize, by @Cyan4973perf: improved compression of arrays of integers at high compression, by @Cyan4973
lib: reduce binary size with selective built-time exclusion, by @felixhandte
lib: improved huffman speed on small data and linux kernel, by @terrelln
lib: accept dictionaries with partial literal tables, by @terrelln
lib: fix CCtx size estimation with external sequence producer, by @embg
lib: fix corner case decoder behaviors, by @Cyan4973 and @aimuz
lib: fix zdict prototype mismatch in static_only mode, by @ldv-alt
lib: fix several bugs in magicless-format decoding, by @embg
cli: add common compressed file types to
--exclude-compressedby @daniellerozenblitcli: fix mixing
-cand-ocommands with--rm, by @Cyan4973cli: fix erroneous exclusion of hidden files with
--output-dir-mirrorby @felixhandtecli: improved time accuracy on BSD, by @felixhandte
cli: better errors on argument parsing, by @KapJI
tests: better compatibility with older versions of
grep, by @Cyan4973tests: lorem ipsum generator as default backup content, by @Cyan4973
build: cmake improvements by @terrelln, @sighingnow, @gjasny, @JohanMabille, @Saverio976, @gruenich, @teo-tsirpanis
build: bazel support, by @jondo2010
build: fix cross-compiling for AArch64 with lld by @jcelerier
build: fix Apple platform compatibility, by @nidhijaju
build: fix Visual 2012 and lower compatibility, by @Cyan4973
build: improve win32 support, by @DimitriPapadopoulos
build: better C90 compliance for zlibWrapper, by @emaste
port: make: fat binaries on macos, by @mredig
port: ARM64EC compatibility for Windows, by @dunhor
port: QNX support by @klausholstjacobsen
port: MSYS2 and Cygwin makefile installation and test support, by @QBos07
port: risc-v support validation in CI, by @Cyan4973
port: sparc64 support validation in CI, by @Cyan4973
port: AIX compatibility, by @likema
port: HP-UX compatibility, by @likema
doc: Improved specification accuracy, by @elasota
bug: Fix and deprecate ZSTD_generateSequences (#3981)