1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
// gh-91321: Very basic C++ test extension to check that the Python C API is
// compatible with C++ and does not emit C++ compiler warnings.
// Always enable assertions
#undef NDEBUG
#include "Python.h"
PyDoc_STRVAR(_testcppext_add_doc,
"add(x, y)\n"
"\n"
"Return the sum of two integers: x + y.");
static PyObject *
_testcppext_add(PyObject *Py_UNUSED(module), PyObject *args)
{
long i, j;
if (!PyArg_ParseTuple(args, "ll:foo", &i, &j)) {
return nullptr;
}
long res = i + j;
return PyLong_FromLong(res);
}
static PyObject *
test_api_casts(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
{
PyObject *obj = Py_BuildValue("(ii)", 1, 2);
if (obj == nullptr) {
return nullptr;
}
// gh-92138: For backward compatibility, functions of Python C API accepts
// "const PyObject*". Check that using it does not emit C++ compiler
// warnings.
const PyObject *const_obj = obj;
Py_INCREF(const_obj);
Py_DECREF(const_obj);
PyTypeObject *type = Py_TYPE(const_obj);
assert(Py_REFCNT(const_obj) >= 1);
assert(type == &PyTuple_Type);
assert(PyTuple_GET_SIZE(const_obj) == 2);
PyObject *one = PyTuple_GET_ITEM(const_obj, 0);
assert(PyLong_AsLong(one) == 1);
Py_DECREF(obj);
Py_RETURN_NONE;
}
static PyMethodDef _testcppext_methods[] = {
{"add", _testcppext_add, METH_VARARGS, _testcppext_add_doc},
{"test_api_casts", test_api_casts, METH_NOARGS, nullptr},
{nullptr, nullptr, 0, nullptr} /* sentinel */
};
static int
_testcppext_exec(PyObject *module)
{
if (PyModule_AddIntMacro(module, __cplusplus) < 0) {
return -1;
}
return 0;
}
static PyModuleDef_Slot _testcppext_slots[] = {
{Py_mod_exec, reinterpret_cast<void*>(_testcppext_exec)},
{0, nullptr}
};
PyDoc_STRVAR(_testcppext_doc, "C++ test extension.");
static struct PyModuleDef _testcppext_module = {
PyModuleDef_HEAD_INIT, // m_base
"_testcppext", // m_name
_testcppext_doc, // m_doc
0, // m_size
_testcppext_methods, // m_methods
_testcppext_slots, // m_slots
nullptr, // m_traverse
nullptr, // m_clear
nullptr, // m_free
};
PyMODINIT_FUNC
PyInit__testcppext(void)
{
return PyModuleDef_Init(&_testcppext_module);
}
|
