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589a03a8ce
Co-authored-by: Victor Stinner <vstinner@python.org> Co-authored-by: Kumar Aditya <kumaraditya@python.org>
127 lines
3.1 KiB
C
127 lines
3.1 KiB
C
// gh-116869: Basic C test extension to check that the Python C API
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// does not emit C compiler warnings.
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//
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// Test also the internal C API if the TEST_INTERNAL_C_API macro is defined.
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// Always enable assertions
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#undef NDEBUG
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#ifdef TEST_INTERNAL_C_API
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# define Py_BUILD_CORE_MODULE 1
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#endif
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#include "Python.h"
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#ifdef TEST_INTERNAL_C_API
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// gh-135906: Check for compiler warnings in the internal C API.
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// - Cython uses pycore_frame.h.
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// - greenlet uses pycore_frame.h, pycore_interpframe_structs.h and
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// pycore_interpframe.h.
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# include "internal/pycore_frame.h"
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# include "internal/pycore_gc.h"
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# include "internal/pycore_interp.h"
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# include "internal/pycore_interpframe.h"
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# include "internal/pycore_interpframe_structs.h"
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# include "internal/pycore_object.h"
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# include "internal/pycore_pystate.h"
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#endif
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#ifndef MODULE_NAME
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# error "MODULE_NAME macro must be defined"
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#endif
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#define _STR(NAME) #NAME
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#define STR(NAME) _STR(NAME)
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PyDoc_STRVAR(_testcext_add_doc,
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"add(x, y)\n"
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"\n"
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"Return the sum of two integers: x + y.");
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static PyObject *
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_testcext_add(PyObject *Py_UNUSED(module), PyObject *args)
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{
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long i, j, res;
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if (!PyArg_ParseTuple(args, "ll:foo", &i, &j)) {
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return NULL;
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}
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res = i + j;
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return PyLong_FromLong(res);
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}
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static PyMethodDef _testcext_methods[] = {
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{"add", _testcext_add, METH_VARARGS, _testcext_add_doc},
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{NULL, NULL, 0, NULL} // sentinel
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};
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static int
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_testcext_exec(
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#ifdef __STDC_VERSION__
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PyObject *module
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#else
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PyObject *Py_UNUSED(module)
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#endif
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)
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{
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#ifdef __STDC_VERSION__
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if (PyModule_AddIntMacro(module, __STDC_VERSION__) < 0) {
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return -1;
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}
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#endif
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// test Py_BUILD_ASSERT() and Py_BUILD_ASSERT_EXPR()
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Py_BUILD_ASSERT(sizeof(int) == sizeof(unsigned int));
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assert(Py_BUILD_ASSERT_EXPR(sizeof(int) == sizeof(unsigned int)) == 0);
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return 0;
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}
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#define _FUNC_NAME(NAME) PyModExport_ ## NAME
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#define FUNC_NAME(NAME) _FUNC_NAME(NAME)
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// Converting from function pointer to void* has undefined behavior, but
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// works on all known platforms, and CPython's module and type slots currently
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// need it.
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// (GCC doesn't have a narrower category for this than -Wpedantic.)
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_Py_COMP_DIAG_PUSH
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#if defined(__GNUC__)
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#pragma GCC diagnostic ignored "-Wpedantic"
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#pragma GCC diagnostic ignored "-Wcast-qual"
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#elif defined(__clang__)
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#pragma clang diagnostic ignored "-Wpedantic"
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#pragma clang diagnostic ignored "-Wcast-qual"
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#endif
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PyDoc_STRVAR(_testcext_doc, "C test extension.");
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static PyModuleDef_Slot _testcext_slots[] = {
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{Py_mod_name, STR(MODULE_NAME)},
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{Py_mod_doc, (void*)(char*)_testcext_doc},
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{Py_mod_exec, (void*)_testcext_exec},
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{Py_mod_methods, _testcext_methods},
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{0, NULL}
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};
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_Py_COMP_DIAG_POP
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PyMODEXPORT_FUNC
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FUNC_NAME(MODULE_NAME)(void)
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{
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return _testcext_slots;
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}
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// Also define the soft-deprecated entrypoint to ensure it isn't called
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#define _INITFUNC_NAME(NAME) PyInit_ ## NAME
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#define INITFUNC_NAME(NAME) _INITFUNC_NAME(NAME)
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PyMODINIT_FUNC
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INITFUNC_NAME(MODULE_NAME)(void)
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{
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PyErr_SetString(
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PyExc_AssertionError,
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"PyInit_* function called while a PyModExport_* one is available");
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return NULL;
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}
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