Zstandard v1.5.2 is a bug-fix release, addressing issues that were raised with the v1.5.1 release.

In particular, as a side-effect of the inclusion of assembly code in our source tree, binary artifacts were being marked as needing an executable stack on non-amd64 architectures. This release corrects that issue. More context is available in #2963.

This release also corrects a performance regression that was introduced in v1.5.0 that slows down compression of very small data when using the streaming API. Issue #2966 tracks that topic.

In addition there are a number of smaller improvements and fixes.

Full Changelist

• Fix zstd-static output name with MINGW/Clang by @MehdiChinoune in https://github.com/facebook/zstd/pull/2947
• storeSeq & mlBase : clarity refactoring by @Cyan4973 in https://github.com/facebook/zstd/pull/2954
• Fix mini typo by @fwessels in https://github.com/facebook/zstd/pull/2960
• Refactor offset+repcode sumtype by @Cyan4973 in https://github.com/facebook/zstd/pull/2962
• meson: fix MSVC support by @eli-schwartz in https://github.com/facebook/zstd/pull/2951
• fix performance issue in scenario #2966 (part 1) by @Cyan4973 in https://github.com/facebook/zstd/pull/2969
• [meson] Explicitly disable assembly for non clang/gcc copmilers by @terrelln in https://github.com/facebook/zstd/pull/2972
• Mark Huffman Decoder Assembly noexecstack on All Architectures by @felixhandte in https://github.com/facebook/zstd/pull/2964
• Improve Module Map File by @felixhandte in https://github.com/facebook/zstd/pull/2953
• Remove Dependencies to Allow the Zstd Binary to Dynamically Link to the Library by @felixhandte in https://github.com/facebook/zstd/pull/2977
• [opt] Fix oss-fuzz bug in optimal parser by @terrelln in https://github.com/facebook/zstd/pull/2980
• [license] Fix license header of huf_decompress_amd64.S by @terrelln in https://github.com/facebook/zstd/pull/2981
• Fix stderr progress logging for decompression by @terrelln in https://github.com/facebook/zstd/pull/2982
• Fix tar test cases by @sunwire in https://github.com/facebook/zstd/pull/2956
• Fixup MSVC source file inclusion for cmake builds by @hmaarrfk in https://github.com/facebook/zstd/pull/2957
• x86-64: Hide internal assembly functions by @hjl-tools in https://github.com/facebook/zstd/pull/2993
• Prepare v1.5.2 by @felixhandte in https://github.com/facebook/zstd/pull/2987
• Documentation and minor refactor to clarify MT memory management by @embg in https://github.com/facebook/zstd/pull/3000
• Avoid updating timestamps when the destination is stdout by @floppym in https://github.com/facebook/zstd/pull/2998
• [build][asm] Pass ASFLAGS to the assembler instead of CFLAGS by @terrelln in https://github.com/facebook/zstd/pull/3009
• Update CI documentation by @embg in https://github.com/facebook/zstd/pull/2999
• Zstandard v1.5.2 by @felixhandte in https://github.com/facebook/zstd/pull/2995

New Contributors

• @MehdiChinoune made their first contribution in https://github.com/facebook/zstd/pull/2947
• @fwessels made their first contribution in https://github.com/facebook/zstd/pull/2960
• @sunwire made their first contribution in https://github.com/facebook/zstd/pull/2956
• @hmaarrfk made their first contribution in https://github.com/facebook/zstd/pull/2957
• @floppym made their first contribution in https://github.com/facebook/zstd/pull/2998

Full Changelog: https://github.com/facebook/zstd/compare/v1.5.1...v1.5.2