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CHANGES.rst

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    Cython Changelog

    0.29.21 (2020-0?-??)

    Bugs fixed

    • The deprecated C-API function PyUnicode_FromUnicode() is no longer used. Original patch by Inada Naoki. (Github issue #3677)
    • Binding staticmethods of Cython functions were not behaving like Python methods. Patch by Jeroen Demeyer. (Github issue #3106)

    0.29.20 (2020-06-10)

    Bugs fixed

    • Nested try-except statements with multiple return statements could crash due to incorrect deletion of the except as target variable. (Github issue #3666)
    • The @classmethod decorator no longer rejects unknown input from other decorators. Patch by David Woods. (Github issue #3660)
    • Fused types could leak into unrelated usages. Patch by David Woods. (Github issue #3642)
    • Now uses Py_SET_SIZE() and Py_SET_REFCNT() in Py3.9+ to avoid low-level write access to these object fields. Patch by Victor Stinner. (Github issue #3639)
    • The built-in abs() function could lead to undefined behaviour when used on the negative-most value of a signed C integer type. Patch by Serge Guelton. (Github issue #1911)
    • Usages of sizeof() and typeid() on uninitialised variables no longer produce a warning. Patch by Celelibi. (Github issue #3575)
    • The C++ typeid() function was allowed in C mode. Patch by Celelibi. (Github issue #3637)
    • The error position reported for errors found in f-strings was misleading. (Github issue #3674)
    • The new c_api_binop_methods directive was added for forward compatibility, but can only be set to True (the current default value). It can be disabled in Cython 3.0.

    0.29.19 (2020-05-20)

    Bugs fixed

    • A typo in Windows specific code in 0.29.18 was fixed that broke "libc.math". (Github issue #3622)
    • A platform specific test failure in 0.29.18 was fixed. Patch by smutch. (Github issue #3620)

    0.29.18 (2020-05-18)

    Bugs fixed

    • Exception position reporting could run into race conditions on threaded code. It now uses function-local variables again.
    • Error handling early in the module init code could lead to a crash.
    • Error handling in cython.array creation was improved to avoid calling C-API functions with an error held.
    • A memory corruption was fixed when garbage collection was triggered during calls to PyType_Ready() of extension type subclasses. (Github issue #3603)
    • Memory view slicing generated unused error handling code which could negatively impact the C compiler optimisations for parallel OpenMP code etc. Also, it is now helped by static branch hints. (Github issue #2987)
    • Cython's built-in OpenMP functions were not translated inside of call arguments. Original patch by Celelibi and David Woods. (Github issue #3594)
    • Complex buffer item types of structs of arrays could fail to validate. Patch by Leo and smutch. (Github issue #1407)
    • Decorators were not allowed on nested async def functions. (Github issue #1462)
    • C-tuples could use invalid C struct casting. Patch by MegaIng. (Github issue #3038)
    • Optimised %d string formatting into f-strings failed on float values. (Github issue #3092)
    • Optimised aligned string formatting (%05s, %-5s) failed. (Github issue #3476)
    • When importing the old Cython build_ext integration with distutils, the additional command line arguments leaked into the regular command. Patch by Kamekameha. (Github issue #2209)
    • When using the CYTHON_NO_PYINIT_EXPORT option in C++, the module init function was not declared as extern "C". (Github issue #3414)
    • Three missing timedelta access macros were added in cpython.datetime.
    • The signature of the NumPy C-API function PyArray_SearchSorted() was fixed. Patch by Brock Mendel. (Github issue #3606)

    0.29.17 (2020-04-26)