Issues

• Is lazy type realization intended to be thread-safe on GIL builds (3.11)?

  python-cffi/cffi#271 · Filter by author calderwoodra opened on Aug 10, 2026
  8

• "too many values to unpack" when there are extension modules in pyproject.toml

  python-cffi/cffi#246 · Filter by author ltfish opened on Jun 2, 2026
  2

• type hint generation (.pyi) support

  python-cffi/cffi#230 · Filter by author mildsunrise opened on Feb 18, 2026
  2

• ValueError: too many values to unpack

  python-cffi/cffi#229 · Filter by author qris opened on Feb 13, 2026
  3

• Memory leak detected when using CFFI in any API mode

  python-cffi/cffi#211 · Filter by author K0tB0ris opened on Nov 5, 2025
  2

• Windows on ARM probably misses synchronization for multi-thread initialization in embedded mode

  python-cffi/cffi#201 · Filter by author arigo opened on Sep 10, 2025
  1

• PEP 517 get_requires_for_build_wheel hook attempts to compile CFFI modules

  python-cffi/cffi#190 · Filter by author hroncok opened on Aug 26, 2025
  6

• Build warnings about uses of deprecated CPython C API items

  python-cffi/cffi#180 · Filter by author ngoldbaum opened on Jul 24, 2025
  3

• Use multi-phase initialisation (PEP 489)

  python-cffi/cffi#174 · Filter by author AA-Turner opened on May 28, 2025
  1

• PyInit_ symbol export errors on MINGW windows PyPy builds

  python-cffi/cffi#170 · Filter by author jerstlouis opened on May 12, 2025
  7

• pip install fails on AIX

  python-cffi/cffi#160 · Filter by author shubhamhii opened on Apr 4, 2025
  2

• Feature Request: "strict" parameter for from_buffer

  python-cffi/cffi#156 · Filter by author James-E-A opened on Feb 11, 2025
  1

• Doc Request: Can you expand on failure modes of offset guessing in ABI mode?

  python-cffi/cffi#151 · Filter by author brianv0 opened on Dec 18, 2024
  1

• Keeping Parent Structures Alive While Substructures Are

  python-cffi/cffi#141 · Filter by author nhusung opened on Oct 29, 2024
  7

• testing/embedded tests are failing on windows

  python-cffi/cffi#136 · Filter by author mattip opened on Oct 13, 2024

• variadic function calls on macos arm64 do not work

  python-cffi/cffi#94 · Filter by author rkaminsk opened on Jul 11, 2024
  6

• tag-mismatch (HWAsan) triggered by cffi

  python-cffi/cffi#93 · Filter by author n-bes opened on Jul 9, 2024
  10

• Support pragma pack

  python-cffi/cffi#45 · Filter by author nanonyme opened on Jan 10, 2024
  7

• Consider adding upper bound packaging metadata

  python-cffi/cffi#37 · Filter by author nitzmahone opened on Nov 27, 2023
  1

• CFFI 1.16.0 fails to recognize nested structs properly for purposes of partial notation

  python-cffi/cffi#36 · Filter by author CrazyCasta opened on Nov 24, 2023
  4