cpython/Lib/test/test_cext/extension.c

84 lines
1.7 KiB
C

// gh-116869: Basic C test extension to check that the Python C API
// does not emit C compiler warnings.
// Always enable assertions
#undef NDEBUG
#include "Python.h"
#ifndef MODULE_NAME
# error "MODULE_NAME macro must be defined"
#endif
#define _STR(NAME) #NAME
#define STR(NAME) _STR(NAME)
PyDoc_STRVAR(_testcext_add_doc,
"add(x, y)\n"
"\n"
"Return the sum of two integers: x + y.");
static PyObject *
_testcext_add(PyObject *Py_UNUSED(module), PyObject *args)
{
long i, j, res;
if (!PyArg_ParseTuple(args, "ll:foo", &i, &j)) {
return NULL;
}
res = i + j;
return PyLong_FromLong(res);
}
static PyMethodDef _testcext_methods[] = {
{"add", _testcext_add, METH_VARARGS, _testcext_add_doc},
{NULL, NULL, 0, NULL} // sentinel
};
static int
_testcext_exec(PyObject *module)
{
#ifdef __STDC_VERSION__
if (PyModule_AddIntMacro(module, __STDC_VERSION__) < 0) {
return -1;
}
#endif
// test Py_BUILD_ASSERT() and Py_BUILD_ASSERT_EXPR()
Py_BUILD_ASSERT(sizeof(int) == sizeof(unsigned int));
assert(Py_BUILD_ASSERT_EXPR(sizeof(int) == sizeof(unsigned int)) == 0);
return 0;
}
static PyModuleDef_Slot _testcext_slots[] = {
{Py_mod_exec, _testcext_exec},
{0, NULL}
};
PyDoc_STRVAR(_testcext_doc, "C test extension.");
static struct PyModuleDef _testcext_module = {
PyModuleDef_HEAD_INIT, // m_base
STR(MODULE_NAME), // m_name
_testcext_doc, // m_doc
0, // m_size
_testcext_methods, // m_methods
_testcext_slots, // m_slots
NULL, // m_traverse
NULL, // m_clear
NULL, // m_free
};
#define _FUNC_NAME(NAME) PyInit_ ## NAME
#define FUNC_NAME(NAME) _FUNC_NAME(NAME)
PyMODINIT_FUNC
FUNC_NAME(MODULE_NAME)(void)
{
return PyModuleDef_Init(&_testcext_module);
}