Issues

• RFC / Proposal: Domain-specific polymorphic pre-filtering (BCJ & Multi-Stride) on binary payloads

  facebook/zstd#4857 · Filter by author Santirobm opened on Oct 21, 2026

• Where should release-verification documentation questions be directed?

  facebook/zstd#4856 · Filter by author rdolds opened on Oct 21, 2026

• --output-dir-flat with --rm: colliding output names overwrite each other and both sources are deleted (exit 0)

  facebook/zstd#4854 · Filter by author ijbranch opened on Oct 21, 2026

• Windows: zstd -r follows directory junctions and symlinks, so -r --rm deletes files outside the given folder

  facebook/zstd#4853 · Filter by author ijbranch opened on Oct 21, 2026

• Windows: zstd -f in -o IN (or -o .\in) truncates the input to 0 bytes: same-file check is a plain strcmp

  facebook/zstd#4852 · Filter by author ijbranch opened on Oct 21, 2026

• zstd benchmark mode: better progress indicator

  facebook/zstd#4850 · Filter by author xmo-odoo opened on Oct 19, 2026

• Silent data corruption when two dictionaries share the same Dictionary_ID (no error raised)

  facebook/zstd#4845 · Filter by author zzwenb opened on Oct 16, 2026
  

• ZSTD_DCtx_refPrefix(): whether the prefix survives ZSTD_DCtx_reset(ZSTD_reset_session_only) after an error depends on where the frame failed

  facebook/zstd#4843 · Filter by author GeekQAQ opened on Oct 14, 2026

• Confusing message of 'unsupported format' in case of trailing rubbish

  facebook/zstd#4831 · Filter by author tansy opened on Oct 9, 2026
  4

• Cannot safely copy context with custom allocator

  facebook/zstd#4830 · Filter by author gyscos opened on Oct 8, 2026

• ZDICT_trainFromBuffer crashes with a segmentation fault

  facebook/zstd#4827 · Filter by author neuecc opened on Oct 6, 2026

• ZSTD_decompressStream() rejects a legacy (v0.5–v0.7) frame when the first call supplies fewer than 5 bytes

  facebook/zstd#4802 · Filter by author mfleischer-ant opened on Sep 29, 2026

• ICE on powerpc64le-unknown-freebsd-gcc version 17.0.0

  facebook/zstd#4801 · Filter by author xinitrcn1 opened on Sep 28, 2026

• cmake: AddZstdCompilationFlags still depends on C++ after #4357

  facebook/zstd#4800 · Filter by author kasper93 opened on Sep 28, 2026

• Any plans for the next Zstandard release?

  facebook/zstd#4785 · Filter by author Marcelo-Otowicz opened on Sep 11, 2026
  2

• ZSTD_compressSequencesAndLiterals() does not enforce its documented litCapacity >= litSize + 8 contract — the implemented check is 8 bytes weaker than the API documentation, its own error message, and the introducing commit

  facebook/zstd#4779 · Filter by author bbingoCN opened on Sep 10, 2026
  1

• [tests] test-license.py exclusion fails on Windows

  facebook/zstd#4777 · Filter by author dajiaohuang opened on Sep 10, 2026

• Undefined Behavior testing zstd in Gentoo

  facebook/zstd#4776 · Filter by author ChaseKnowlden opened on Sep 10, 2026

• Feature request: native multithreaded decompression for standard frames

  facebook/zstd#4775 · Filter by author arslaman opened on Sep 9, 2026

• Multithreaded compression offers only a slight performance improvement

  facebook/zstd#4762 · Filter by author kakaacat opened on Sep 3, 2026
  1

• More clarity in docus about what "make install" will do, and where.

  facebook/zstd#4757 · Filter by author somian opened on Sep 1, 2026

• seekable_format warning with -DNDEBUG: potential uninitialised local variable newOffset used

  facebook/zstd#4756 · Filter by author RSpliet opened on Sep 1, 2026

• [linux kernel code] CPU feature detection fixups (BMI2)

  facebook/zstd#4752 · Filter by author kdave opened on Aug 31, 2026
  1

• COVER_selectDict() uses stale customDictContentEnd after ZDICT_finalizeDictionary modifies dictContentSize

  facebook/zstd#4750 · Filter by author zhangguoen1995 opened on Aug 31, 2026

• cli-tests: levels.sh --max test fails on systems with < 10GB RAM

  facebook/zstd#4748 · Filter by author pratikfarkasest opened on Aug 28, 2026
  1