gh-141563: make PyDateTime_IMPORT thread-safe#144210
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kumaraditya303 merged 6 commits intopython:mainfrom Feb 9, 2026
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gh-141563: make PyDateTime_IMPORT thread-safe#144210kumaraditya303 merged 6 commits intopython:mainfrom
PyDateTime_IMPORT thread-safe#144210kumaraditya303 merged 6 commits intopython:mainfrom
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vstinner
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Jan 27, 2026
vstinner
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Feb 2, 2026
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| #define PyDateTime_IMPORT \ | ||
| PyDateTimeAPI = (PyDateTime_CAPI *)PyCapsule_Import(PyDateTime_CAPSULE_NAME, 0) | ||
| static inline PyDateTime_CAPI * |
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Feb 10, 2026
| PyDateTimeAPI = (PyDateTime_CAPI *)PyCapsule_Import(PyDateTime_CAPSULE_NAME, 0) | ||
| static inline PyDateTime_CAPI * | ||
| _PyDateTime_IMPORT(void) { | ||
| PyDateTime_CAPI *val = _Py_atomic_load_ptr(&PyDateTimeAPI); |
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I'm now seeing this error in external code that includes datetime.h:
…/cpython_install/include/python3.15/datetime.h:201:22: error: cannot initialize a variable of type 'PyDateTime_CAPI *' with an rvalue of type 'void *'
201 | PyDateTime_CAPI *val = _Py_atomic_load_ptr(&PyDateTimeAPI);
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Probably just missing a cast.
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Do you get the error with C or C++?
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Ah, there is a compiler error in C++. I wrote #144667 to add the missing cast, but also to add checks for compiler warnings (to test_cext and test_cppext).
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datetimeC API is not thread-safe #141563