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* gh-94731: Revert to C-style casts for _Py_CAST (GH-94782)Petr Viktorin2022-07-141-3/+73
| | | Co-authored-by: da-woods <dw-git@d-woods.co.uk>
* gh-94751: Install, import and run the test C++ extension (MVP) (GH-94754)Petr Viktorin2022-07-121-0/+14
| | | | | | | | | This is a quick-and-dirty way to run the C++ tests. It can definitely be improved in the future, but it should fail when things go wrong. - Run test functions on import (yes, this can definitely be improved) - Fudge setuptools metadata (name & version) to make the extension installable - Install and import the extension in test_cppext
* gh-91321: Fix compatibility with C++ older than C++11 (#93784)Victor Stinner2022-06-141-16/+30
| | | | | Fix the compatibility of the Python C API with C++ older than C++11. _Py_NULL is only defined as nullptr on C++11 and newer.
* gh-93442: Add test for _Py_CAST(nullptr). (gh-93505)Neil Schemenauer2022-06-051-0/+3
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* gh-93442: Make C++ version of _Py_CAST work with 0/NULL. (#93500)Neil Schemenauer2022-06-051-0/+4
| | | | | | | | | | | | Add C++ overloads for _Py_CAST_impl() to handle 0/NULL. This will allow C++ extensions that pass 0 or NULL to macros using _Py_CAST() to continue to compile. Without this, you get an error like: invalid ‘static_cast’ from type ‘int’ to type ‘_object*’ The modern way to use a NULL value in C++ is to use nullptr. However, we want to not break extensions that do things the old way. Co-authored-by: serge-sans-paille
* gh-92898: Enhance _testcppext test on cast to PyObject* (#93111)Victor Stinner2022-05-261-11/+31
| | | | * Add StrongRef class. * Rename and reformat functions of the _Py_CAST() implementation.
* GH-92898: Make _Py_Cast C++ version compatible with cast operator (gh-92951)serge-sans-paille2022-05-211-0/+9
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* gh-89653: PEP 670: Fix PyUnicode_READ() cast (#92872)Victor Stinner2022-05-171-0/+31
| | | | _Py_CAST() cannot be used with a constant type: use _Py_STATIC_CAST() instead.
* gh-91321: Add _Py_NULL macro (#92253)Victor Stinner2022-05-031-4/+4
| | | | | | | | Fix C++ compiler warnings: "zero as null pointer constant" (clang -Wzero-as-null-pointer-constant). * Add the _Py_NULL macro used by static inline functions to use nullptr in C++. * Replace NULL with nullptr in _testcppext.cpp.
* gh-92135: Fix _Py_reinterpret_cast() for const (#92138)Victor Stinner2022-05-021-0/+31
| | | | | | | | | | Fix C++ compiler warnings on cast macros, like _PyObject_CAST(), when casting a constant expression to a non constant type: use const_cast<> in C++. * In C++, Py_SAFE_DOWNCAST() now uses static_cast<> rather than reinterpret_cast<>. * Add tests to the _testcppext C++ extension. * test_cppext no longer captures stdout in verbose mode.
* gh-91321: Add _testcppext C++ extension (#32175)Victor Stinner2022-05-021-0/+62
Build a basic C++ test extension to check that the Python C API is compatible with C++ and does not emit C++ compiler warnings. * Add Modules/_testcppext.cpp: C++ extension * Add Lib/test/test_cppext.py: test building the C++ extension.
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