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Enable limited C API tests on Python 3.15 on Windows #185

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Merged
vstinner merged 2 commits into from
Oct 5, 2026
Merged

Enable limited C API tests on Python 3.15 on Windows #185

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9177bc6
Enable limited C API tests on Python 3.15 on Windows
vstinner Oct 5, 2026
9a72b01
Workaround setuptools bug
vstinner Oct 5, 2026
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3 changes: 1 addition & 2 deletions tests/setup.py
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Original file line number Diff line number Diff line change
Expand Up @@ -16,8 +16,7 @@
FREE_THREADING = bool(sysconfig.get_config_var('Py_GIL_DISABLED'))
if sys.implementation.name == 'cpython':
if FREE_THREADING:
# FIXME: test the limited C API on Windows
TEST_LIMITED_C_API = (sys.version_info >= (3, 15)) and not MS_WINDOWS
TEST_LIMITED_C_API = (sys.version_info >= (3, 15))
else:
TEST_LIMITED_C_API = True
else:
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20 changes: 17 additions & 3 deletions tests/test_pythoncapi_compat_cext.c
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Expand Up @@ -2656,7 +2656,7 @@ module_exec(PyObject *module)


// On Python 3.15 and newer, use PySlot API
#if PY_VERSION_HEX >= 0x030F0000 && !defined(MS_WINDOWS)
#if PY_VERSION_HEX >= 0x030F0000

PyABIInfo_VAR(abi_info);

Expand All @@ -2670,14 +2670,28 @@ static PySlot module_slots[] = {
{0, 0, {0}, {0}}
};

#define INIT_FUNC CONCAT(PyModExport_, MODULE_NAME)
#define EXPORT_FUNC CONCAT(PyModExport_, MODULE_NAME)

PyMODEXPORT_FUNC
INIT_FUNC(void)
EXPORT_FUNC(void)
{
return module_slots;
}

#ifdef MS_WINDOWS
#define INIT_FUNC CONCAT(PyInit_, MODULE_NAME)

// Workaround for https://github.com/pypa/distutils/issues/387
// https://docs.python.org/3.16/howto/abi3t-migration.html#module-export-hook
PyMODINIT_FUNC
INIT_FUNC(void)
{
PyErr_SetString(PyExc_SystemError,
"PyInit_* called for module with PyModExport_*");
return NULL;
}
#endif

#else

static PyModuleDef_Slot module_slots[] = {
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