Cython v0.29.22 Release Notes

Release Date: 2021-02-20 // 9 months ago
  • ๐Ÿ”‹ Features added

    • Some declarations were added to the provided pxd includes. Patches by Zackery Spytz and John Kirkham. (Github issues :issue:3811, :issue:3882, :issue:3899, :issue:3901)

    ๐Ÿ› Bugs fixed

    • A crash when calling certain functions in Py3.9 and later was resolved. (Github issue :issue:3917)

    • const memory views of structs failed to compile. (Github issue :issue:2251)

    • const template declarations could not be nested. Patch by Ashwin Srinath. (Github issue :issue:1355)

    • The declarations in the cpython.pycapsule module were missing their const modifiers and generated incorrect C code. Patch by Warren Weckesser. (Github issue :issue:3964)

    • Casts to memory views failed for fused dtypes. Patch by David Woods. (Github issue :issue:3881)

    • repr() was assumed to return str instead of unicode with language_level=3. (Github issue :issue:3736)

    • Calling cpdef functions from cimported modules crashed the compiler. Patch by David Woods. (Github issue :issue:4000)

    • Cython no longer validates the ABI size of the NumPy classes it compiled against. See the discussion in

    • โš  A C compiler warning about enum value casting was resolved in GCC. (Github issue :issue:2749)

    • Coverage reporting in the annotated HTML file failed in Py3.9. Patch by Nick Pope. (Github issue :issue:3865)

    • The embedding code now reports Python errors as exit status.

    • Long type declarations could lead to (harmless) random changes in the C file when used in auto-generated Python wrappers or pickled classes.

    Other changes

    • โš  Variables defined as cpdef now generate a warning since this is currently useless and thus does not do what users would expect. Patch by David Woods. (Github issue :issue:3959)

    .. _0.29.21: