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1561 lines (1284 loc) · 40.3 KB
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// Always enable assertions
#undef NDEBUG
#include "pythoncapi_compat.h"
#ifdef NDEBUG
# error "assertions must be enabled"
#endif
#ifdef Py_LIMITED_API
# error "Py_LIMITED_API is not supported"
#endif
#if PY_VERSION_HEX >= 0x03000000
# define PYTHON3 1
#endif
#if defined(_MSC_VER) && defined(__cplusplus)
# define MODULE_NAME test_pythoncapi_compat_cppext
#elif defined(__cplusplus) && __cplusplus >= 201103
# define MODULE_NAME test_pythoncapi_compat_cpp11ext
#elif defined(__cplusplus)
# define MODULE_NAME test_pythoncapi_compat_cpp03ext
#else
# define MODULE_NAME test_pythoncapi_compat_cext
#endif
#define _STR(NAME) #NAME
#define STR(NAME) _STR(NAME)
#define _CONCAT(a, b) a ## b
#define CONCAT(a, b) _CONCAT(a, b)
#define MODULE_NAME_STR STR(MODULE_NAME)
// Ignore reference count checks on PyPy
#ifndef PYPY_VERSION
# define CHECK_REFCNT
#endif
// CPython 3.12 beta 1 implements immortal objects (PEP 683)
#if 0x030C00B1 <= PY_VERSION_HEX && !defined(PYPY_VERSION)
// Don't check reference count of Python 3.12 immortal objects (ex: bool
// and str types)
# define IMMORTAL_OBJS
#endif
#ifdef CHECK_REFCNT
# define ASSERT_REFCNT(expr) assert(expr)
#else
# define ASSERT_REFCNT(expr)
#endif
// Marker to check that pointer value was set
static const char uninitialized[] = "uninitialized";
#define UNINITIALIZED_OBJ ((PyObject *)uninitialized)
static PyObject*
create_string(const char *str)
{
PyObject *obj;
#ifdef PYTHON3
obj = PyUnicode_FromString(str);
#else
obj = PyString_FromString(str);
#endif
assert(obj != _Py_NULL);
return obj;
}
static PyObject *
test_object(PyObject *Py_UNUSED(module), PyObject* Py_UNUSED(ignored))
{
PyObject *obj = PyList_New(0);
if (obj == _Py_NULL) {
return _Py_NULL;
}
Py_ssize_t refcnt = Py_REFCNT(obj);
// Py_NewRef()
PyObject *ref = Py_NewRef(obj);
assert(ref == obj);
assert(Py_REFCNT(obj) == (refcnt + 1));
Py_DECREF(ref);
// Py_XNewRef()
PyObject *xref = Py_XNewRef(obj);
assert(xref == obj);
assert(Py_REFCNT(obj) == (refcnt + 1));
Py_DECREF(xref);
assert(Py_XNewRef(_Py_NULL) == _Py_NULL);
// Py_SETREF()
PyObject *setref = Py_NewRef(obj);
PyObject *none = Py_None;
assert(Py_REFCNT(obj) == (refcnt + 1));
Py_SETREF(setref, none);
assert(setref == none);
assert(Py_REFCNT(obj) == refcnt);
Py_INCREF(setref);
Py_SETREF(setref, _Py_NULL);
assert(setref == _Py_NULL);
// Py_XSETREF()
PyObject *xsetref = _Py_NULL;
Py_INCREF(obj);
assert(Py_REFCNT(obj) == (refcnt + 1));
Py_XSETREF(xsetref, obj);
assert(xsetref == obj);
Py_XSETREF(xsetref, _Py_NULL);
assert(Py_REFCNT(obj) == refcnt);
assert(xsetref == _Py_NULL);
// Py_SET_REFCNT
Py_SET_REFCNT(obj, Py_REFCNT(obj));
// Py_SET_TYPE
Py_SET_TYPE(obj, Py_TYPE(obj));
// Py_SET_SIZE
Py_SET_SIZE(obj, Py_SIZE(obj));
// Py_IS_TYPE()
int is_type = Py_IS_TYPE(obj, Py_TYPE(obj));
assert(is_type);
assert(Py_REFCNT(obj) == refcnt);
Py_DECREF(obj);
Py_RETURN_NONE;
}
static PyObject *
test_py_is(PyObject *Py_UNUSED(module), PyObject* Py_UNUSED(ignored))
{
PyObject *o_none = Py_None;
PyObject *o_true = Py_True;
PyObject *o_false = Py_False;
PyObject *obj = PyList_New(0);
if (obj == _Py_NULL) {
return _Py_NULL;
}
/* test Py_Is() */
assert(Py_Is(obj, obj));
assert(!Py_Is(obj, o_none));
/* test Py_IsNone() */
assert(Py_IsNone(o_none));
assert(!Py_IsNone(obj));
/* test Py_IsTrue() */
assert(Py_IsTrue(o_true));
assert(!Py_IsTrue(o_false));
assert(!Py_IsTrue(obj));
/* testPy_IsFalse() */
assert(Py_IsFalse(o_false));
assert(!Py_IsFalse(o_true));
assert(!Py_IsFalse(obj));
Py_DECREF(obj);
Py_RETURN_NONE;
}
#ifndef PYPY_VERSION
static void
test_frame_getvar(PyFrameObject *frame)
{
// Make the assumption that test_frame_getvar() is only called by
// _run_tests() of test_pythoncapi_compat.py and so that the "name"
// variable exists.
// test PyFrame_GetVar() and PyFrame_GetVarString()
PyObject *attr = PyUnicode_FromString("name");
assert(attr != _Py_NULL);
PyObject *name1 = PyFrame_GetVar(frame, attr);
Py_DECREF(attr);
assert(name1 != _Py_NULL);
Py_DECREF(name1);
PyObject *name2 = PyFrame_GetVarString(frame, "name");
assert(name2 != _Py_NULL);
Py_DECREF(name2);
// test PyFrame_GetVar() and PyFrame_GetVarString() NameError
PyObject *attr3 = PyUnicode_FromString("dontexist");
assert(attr3 != _Py_NULL);
PyObject *name3 = PyFrame_GetVar(frame, attr3);
Py_DECREF(attr3);
assert(name3 == _Py_NULL);
assert(PyErr_ExceptionMatches(PyExc_NameError));
PyErr_Clear();
PyObject *name4 = PyFrame_GetVarString(frame, "dontexist");
assert(name4 == _Py_NULL);
assert(PyErr_ExceptionMatches(PyExc_NameError));
PyErr_Clear();
}
static PyObject *
test_frame(PyObject *Py_UNUSED(module), PyObject* Py_UNUSED(ignored))
{
PyThreadState *tstate = PyThreadState_Get();
// test PyThreadState_GetFrame()
PyFrameObject *frame = PyThreadState_GetFrame(tstate);
if (frame == _Py_NULL) {
PyErr_SetString(PyExc_AssertionError, "PyThreadState_GetFrame failed");
return _Py_NULL;
}
// test _PyThreadState_GetFrameBorrow()
Py_ssize_t frame_refcnt = Py_REFCNT(frame);
PyFrameObject *frame2 = _PyThreadState_GetFrameBorrow(tstate);
assert(frame2 == frame);
assert(Py_REFCNT(frame) == frame_refcnt);
// test PyFrame_GetCode()
PyCodeObject *code = PyFrame_GetCode(frame);
assert(code != _Py_NULL);
assert(PyCode_Check(code));
// test _PyFrame_GetCodeBorrow()
Py_ssize_t code_refcnt = Py_REFCNT(code);
PyCodeObject *code2 = _PyFrame_GetCodeBorrow(frame);
assert(code2 == code);
assert(Py_REFCNT(code) == code_refcnt);
Py_DECREF(code);
// PyFrame_GetBack()
PyFrameObject* back = PyFrame_GetBack(frame);
if (back != _Py_NULL) {
assert(PyFrame_Check(back));
}
// test _PyFrame_GetBackBorrow()
if (back != _Py_NULL) {
Py_ssize_t back_refcnt = Py_REFCNT(back);
PyFrameObject *back2 = _PyFrame_GetBackBorrow(frame);
assert(back2 == back);
assert(Py_REFCNT(back) == back_refcnt);
}
else {
PyFrameObject *back2 = _PyFrame_GetBackBorrow(frame);
assert(back2 == back);
}
Py_XDECREF(back);
// test PyFrame_GetLocals()
PyObject *locals = PyFrame_GetLocals(frame);
assert(locals != _Py_NULL);
assert(PyDict_Check(locals));
// test PyFrame_GetGlobals()
PyObject *globals = PyFrame_GetGlobals(frame);
assert(globals != _Py_NULL);
assert(PyDict_Check(globals));
// test PyFrame_GetBuiltins()
PyObject *builtins = PyFrame_GetBuiltins(frame);
assert(builtins != _Py_NULL);
assert(PyDict_Check(builtins));
assert(locals != globals);
assert(globals != builtins);
assert(builtins != locals);
Py_DECREF(locals);
Py_DECREF(globals);
Py_DECREF(builtins);
// test PyFrame_GetLasti()
int lasti = PyFrame_GetLasti(frame);
assert(lasti >= 0);
// test PyFrame_GetVar() and PyFrame_GetVarString()
test_frame_getvar(frame);
// done
Py_DECREF(frame);
Py_RETURN_NONE;
}
#endif
static PyObject *
test_thread_state(PyObject *Py_UNUSED(module), PyObject* Py_UNUSED(ignored))
{
PyThreadState *tstate = PyThreadState_Get();
// test PyThreadState_GetInterpreter()
PyInterpreterState *interp = PyThreadState_GetInterpreter(tstate);
assert(interp != _Py_NULL);
#ifndef PYPY_VERSION
// test PyThreadState_GetFrame()
PyFrameObject *frame = PyThreadState_GetFrame(tstate);
if (frame != _Py_NULL) {
assert(PyFrame_Check(frame));
}
Py_XDECREF(frame);
#endif
#if 0x030700A1 <= PY_VERSION_HEX && !defined(PYPY_VERSION)
uint64_t id = PyThreadState_GetID(tstate);
assert(id > 0);
#endif
#ifndef PYPY_VERSION
// PyThreadState_EnterTracing(), PyThreadState_LeaveTracing()
PyThreadState_EnterTracing(tstate);
PyThreadState_LeaveTracing(tstate);
#endif
#if PY_VERSION_HEX >= 0x03050200
// PyThreadState_GetUnchecked()
assert(PyThreadState_GetUnchecked() == tstate);
#endif
Py_RETURN_NONE;
}
static PyObject *
test_interpreter(PyObject *Py_UNUSED(module), PyObject* Py_UNUSED(ignored))
{
// test PyInterpreterState_Get()
PyInterpreterState *interp = PyInterpreterState_Get();
assert(interp != _Py_NULL);
PyThreadState *tstate = PyThreadState_Get();
PyInterpreterState *interp2 = PyThreadState_GetInterpreter(tstate);
assert(interp == interp2);
#if 0x030300A1 <= PY_VERSION_HEX && (!defined(PYPY_VERSION_NUM) || PYPY_VERSION_NUM >= 0x7030000)
// test Py_IsFinalizing()
assert(Py_IsFinalizing() == 0);
#endif
Py_RETURN_NONE;
}
static PyObject *
test_calls(PyObject *Py_UNUSED(module), PyObject* Py_UNUSED(ignored))
{
PyObject *func = _Py_CAST(PyObject*, &PyUnicode_Type);
// test PyObject_CallNoArgs(): str() returns ''
PyObject *res = PyObject_CallNoArgs(func);
if (res == _Py_NULL) {
return _Py_NULL;
}
assert(PyUnicode_Check(res));
Py_DECREF(res);
// test PyObject_CallOneArg(): str(1) returns '1'
PyObject *arg = PyLong_FromLong(1);
if (arg == _Py_NULL) {
return _Py_NULL;
}
res = PyObject_CallOneArg(func, arg);
Py_DECREF(arg);
if (res == _Py_NULL) {
return _Py_NULL;
}
assert(PyUnicode_Check(res));
Py_DECREF(res);
Py_RETURN_NONE;
}
static PyObject *
test_gc(PyObject *Py_UNUSED(module), PyObject* Py_UNUSED(ignored))
{
PyObject *tuple = PyTuple_New(1);
Py_INCREF(Py_None);
PyTuple_SET_ITEM(tuple, 0, Py_None);
#if !defined(PYPY_VERSION)
// test PyObject_GC_IsTracked()
int tracked = PyObject_GC_IsTracked(tuple);
assert(tracked);
#endif
#if PY_VERSION_HEX >= 0x030400F0 && !defined(PYPY_VERSION)
// test PyObject_GC_IsFinalized()
int finalized = PyObject_GC_IsFinalized(tuple);
assert(!finalized);
#endif
Py_DECREF(tuple);
Py_RETURN_NONE;
}
static int
check_module_attr(PyObject *module, const char *name, PyObject *expected)
{
PyObject *attr = PyObject_GetAttrString(module, name);
if (attr == _Py_NULL) {
return -1;
}
assert(attr == expected);
Py_DECREF(attr);
if (PyObject_DelAttrString(module, name) < 0) {
return -1;
}
return 0;
}
// test PyModule_AddType()
static int
test_module_add_type(PyObject *module)
{
PyTypeObject *type = &PyUnicode_Type;
#ifdef PYTHON3
const char *type_name = "str";
#else
const char *type_name = "unicode";
#endif
#ifdef CHECK_REFCNT
Py_ssize_t refcnt = Py_REFCNT(type);
#endif
if (PyModule_AddType(module, type) < 0) {
return -1;
}
#ifndef IMMORTAL_OBJS
ASSERT_REFCNT(Py_REFCNT(type) == refcnt + 1);
#endif
if (check_module_attr(module, type_name, _Py_CAST(PyObject*, type)) < 0) {
return -1;
}
ASSERT_REFCNT(Py_REFCNT(type) == refcnt);
return 0;
}
// test PyModule_AddObjectRef()
static int
test_module_addobjectref(PyObject *module)
{
const char *name = "test_module_addobjectref";
PyObject *obj = PyUnicode_FromString(name);
assert(obj != _Py_NULL);
#ifdef CHECK_REFCNT
Py_ssize_t refcnt = Py_REFCNT(obj);
#endif
if (PyModule_AddObjectRef(module, name, obj) < 0) {
ASSERT_REFCNT(Py_REFCNT(obj) == refcnt);
Py_DECREF(obj);
return -1;
}
ASSERT_REFCNT(Py_REFCNT(obj) == refcnt + 1);
if (check_module_attr(module, name, obj) < 0) {
Py_DECREF(obj);
return -1;
}
ASSERT_REFCNT(Py_REFCNT(obj) == refcnt);
// PyModule_AddObjectRef() with value=NULL must not crash
assert(!PyErr_Occurred());
int res = PyModule_AddObjectRef(module, name, _Py_NULL);
assert(res < 0);
assert(PyErr_ExceptionMatches(PyExc_SystemError));
PyErr_Clear();
Py_DECREF(obj);
return 0;
}
// test PyModule_Add()
static int
test_module_add(PyObject *module)
{
const char *name = "test_module_add";
PyObject *obj = PyUnicode_FromString(name);
assert(obj != _Py_NULL);
#ifdef CHECK_REFCNT
Py_ssize_t refcnt = Py_REFCNT(obj);
#endif
if (PyModule_Add(module, name, Py_NewRef(obj)) < 0) {
ASSERT_REFCNT(Py_REFCNT(obj) == refcnt);
Py_DECREF(obj);
return -1;
}
ASSERT_REFCNT(Py_REFCNT(obj) == refcnt + 1);
if (check_module_attr(module, name, obj) < 0) {
Py_DECREF(obj);
return -1;
}
ASSERT_REFCNT(Py_REFCNT(obj) == refcnt);
// PyModule_Add() with value=NULL must not crash
assert(!PyErr_Occurred());
int res = PyModule_Add(module, name, _Py_NULL);
assert(res < 0);
assert(PyErr_ExceptionMatches(PyExc_SystemError));
PyErr_Clear();
Py_DECREF(obj);
return 0;
}
static PyObject *
test_module(PyObject *Py_UNUSED(module), PyObject* Py_UNUSED(ignored))
{
PyObject *module = PyImport_ImportModule("sys");
if (module == _Py_NULL) {
return _Py_NULL;
}
assert(PyModule_Check(module));
if (test_module_add_type(module) < 0) {
goto error;
}
if (test_module_addobjectref(module) < 0) {
goto error;
}
if (test_module_add(module) < 0) {
goto error;
}
Py_DECREF(module);
Py_RETURN_NONE;
error:
Py_DECREF(module);
return _Py_NULL;
}
#if (PY_VERSION_HEX <= 0x030B00A1 || 0x030B00A7 <= PY_VERSION_HEX) && !defined(PYPY_VERSION)
static PyObject *
test_float_pack(PyObject *Py_UNUSED(module), PyObject* Py_UNUSED(ignored))
{
const int big_endian = 0;
const int little_endian = 1;
char data[8];
const double d = 1.5;
#if PY_VERSION_HEX >= 0x030600B1
# define HAVE_FLOAT_PACK2
#endif
// Test Pack (big endian)
#ifdef HAVE_FLOAT_PACK2
assert(PyFloat_Pack2(d, data, big_endian) == 0);
assert(memcmp(data, ">\x00", 2) == 0);
#endif
assert(PyFloat_Pack4(d, data, big_endian) == 0);
assert(memcmp(data, "?\xc0\x00\x00", 2) == 0);
assert(PyFloat_Pack8(d, data, big_endian) == 0);
assert(memcmp(data, "?\xf8\x00\x00\x00\x00\x00\x00", 2) == 0);
// Test Pack (little endian)
#ifdef HAVE_FLOAT_PACK2
assert(PyFloat_Pack2(d, data, little_endian) == 0);
assert(memcmp(data, "\x00>", 2) == 0);
#endif
assert(PyFloat_Pack4(d, data, little_endian) == 0);
assert(memcmp(data, "\x00\x00\xc0?", 2) == 0);
assert(PyFloat_Pack8(d, data, little_endian) == 0);
assert(memcmp(data, "\x00\x00\x00\x00\x00\x00\xf8?", 2) == 0);
// Test Unpack (big endian)
#ifdef HAVE_FLOAT_PACK2
assert(PyFloat_Unpack2(">\x00", big_endian) == d);
#endif
assert(PyFloat_Unpack4("?\xc0\x00\x00", big_endian) == d);
assert(PyFloat_Unpack8("?\xf8\x00\x00\x00\x00\x00\x00", big_endian) == d);
// Test Unpack (little endian)
#ifdef HAVE_FLOAT_PACK2
assert(PyFloat_Unpack2("\x00>", little_endian) == d);
#endif
assert(PyFloat_Unpack4("\x00\x00\xc0?", little_endian) == d);
assert(PyFloat_Unpack8("\x00\x00\x00\x00\x00\x00\xf8?", little_endian) == d);
Py_RETURN_NONE;
}
#endif
#if !defined(PYPY_VERSION)
static PyObject *
test_code(PyObject *Py_UNUSED(module), PyObject* Py_UNUSED(ignored))
{
PyThreadState *tstate = PyThreadState_Get();
PyFrameObject *frame = PyThreadState_GetFrame(tstate);
if (frame == _Py_NULL) {
PyErr_SetString(PyExc_AssertionError, "PyThreadState_GetFrame failed");
return _Py_NULL;
}
PyCodeObject *code = PyFrame_GetCode(frame);
// PyCode_GetCode()
{
PyObject *co_code = PyCode_GetCode(code);
assert(co_code != _Py_NULL);
assert(PyBytes_Check(co_code));
Py_DECREF(co_code);
}
// PyCode_GetVarnames
{
PyObject *co_varnames = PyCode_GetVarnames(code);
assert(co_varnames != _Py_NULL);
assert(PyTuple_CheckExact(co_varnames));
assert(PyTuple_GET_SIZE(co_varnames) != 0);
Py_DECREF(co_varnames);
}
// PyCode_GetCellvars
{
PyObject *co_cellvars = PyCode_GetCellvars(code);
assert(co_cellvars != _Py_NULL);
assert(PyTuple_CheckExact(co_cellvars));
assert(PyTuple_GET_SIZE(co_cellvars) == 0);
Py_DECREF(co_cellvars);
}
// PyCode_GetFreevars
{
PyObject *co_freevars = PyCode_GetFreevars(code);
assert(co_freevars != _Py_NULL);
assert(PyTuple_CheckExact(co_freevars));
assert(PyTuple_GET_SIZE(co_freevars) == 0);
Py_DECREF(co_freevars);
}
Py_DECREF(code);
Py_DECREF(frame);
Py_RETURN_NONE;
}
#endif
#ifdef __cplusplus
// Class to test operator casting an object to PyObject*
class StrongRef
{
public:
StrongRef(PyObject *obj) : m_obj(obj) {
Py_INCREF(this->m_obj);
}
~StrongRef() {
Py_DECREF(this->m_obj);
}
// Cast to PyObject*: get a borrowed reference
inline operator PyObject*() const { return this->m_obj; }
private:
PyObject *m_obj; // Strong reference
};
#endif
static PyObject *
test_api_casts(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
{
PyObject *obj = Py_BuildValue("(ii)", 1, 2);
if (obj == _Py_NULL) {
return _Py_NULL;
}
Py_ssize_t refcnt = Py_REFCNT(obj);
assert(refcnt >= 1);
// 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) == refcnt);
assert(type == &PyTuple_Type);
assert(PyTuple_GET_SIZE(const_obj) == 2);
PyObject *one = PyTuple_GET_ITEM(const_obj, 0);
assert(PyLong_AsLong(one) == 1);
#ifdef __cplusplus
// gh-92898: StrongRef doesn't inherit from PyObject but has an operator to
// cast to PyObject*.
StrongRef strong_ref(obj);
assert(Py_TYPE(strong_ref) == &PyTuple_Type);
assert(Py_REFCNT(strong_ref) == (refcnt + 1));
Py_INCREF(strong_ref);
Py_DECREF(strong_ref);
#endif
// gh-93442: Pass 0 as NULL for PyObject*
Py_XINCREF(0);
Py_XDECREF(0);
#if _cplusplus >= 201103
// Test nullptr passed as PyObject*
Py_XINCREF(nullptr);
Py_XDECREF(nullptr);
#endif
Py_DECREF(obj);
Py_RETURN_NONE;
}
static PyObject *
test_import(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
{
PyObject *mod = PyImport_ImportModule("sys");
if (mod == _Py_NULL) {
return _Py_NULL;
}
Py_ssize_t refcnt = Py_REFCNT(mod);
// test PyImport_AddModuleRef()
PyObject *mod2 = PyImport_AddModuleRef("sys");
if (mod2 == _Py_NULL) {
return _Py_NULL;
}
assert(PyModule_Check(mod2));
assert(Py_REFCNT(mod) == (refcnt + 1));
Py_DECREF(mod2);
Py_DECREF(mod);
Py_RETURN_NONE;
}
static void
gc_collect(void)
{
#if defined(PYPY_VERSION)
PyObject *mod = PyImport_ImportModule("gc");
assert(mod != _Py_NULL);
PyObject *res = PyObject_CallMethod(mod, "collect", _Py_NULL);
Py_DECREF(mod);
assert(res != _Py_NULL);
Py_DECREF(res);
#else
PyGC_Collect();
#endif
}
static PyObject *
func_varargs(PyObject *Py_UNUSED(module), PyObject *args, PyObject *kwargs)
{
if (kwargs != _Py_NULL) {
return PyTuple_Pack(2, args, kwargs);
}
else {
return PyTuple_Pack(1, args);
}
}
static void
check_int(PyObject *obj, int value)
{
#ifdef PYTHON3
assert(PyLong_Check(obj));
assert(PyLong_AsLong(obj) == value);
#else
assert(PyInt_Check(obj));
assert(PyInt_AsLong(obj) == value);
#endif
}
static PyObject *
test_weakref(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
{
// Create a new heap type, create an instance of this type, and delete the
// type. This object supports weak references.
PyObject *new_type = PyObject_CallFunction((PyObject*)&PyType_Type,
"s(){}", "TypeName");
if (new_type == _Py_NULL) {
return _Py_NULL;
}
PyObject *obj = PyObject_CallNoArgs(new_type);
Py_DECREF(new_type);
if (obj == _Py_NULL) {
return _Py_NULL;
}
Py_ssize_t refcnt = Py_REFCNT(obj);
// create a weak reference
PyObject *weakref = PyWeakref_NewRef(obj, _Py_NULL);
if (weakref == _Py_NULL) {
return _Py_NULL;
}
// test PyWeakref_GetRef(), reference is alive
PyObject *ref = UNINITIALIZED_OBJ;
assert(PyWeakref_GetRef(weakref, &ref) == 1);
assert(ref == obj);
assert(Py_REFCNT(obj) == (refcnt + 1));
Py_DECREF(ref);
// delete the referenced object: clear the weakref
Py_DECREF(obj);
gc_collect();
// test PyWeakref_GetRef(), reference is dead
ref = Py_True;
assert(PyWeakref_GetRef(weakref, &ref) == 0);
assert(ref == _Py_NULL);
// test PyWeakref_GetRef(), invalid type
PyObject *invalid_weakref = Py_None;
assert(!PyErr_Occurred());
ref = Py_True;
assert(PyWeakref_GetRef(invalid_weakref, &ref) == -1);
assert(PyErr_ExceptionMatches(PyExc_TypeError));
assert(ref == _Py_NULL);
PyErr_Clear();
#ifndef PYPY_VERSION
// test PyWeakref_GetRef(NULL)
ref = Py_True;
assert(PyWeakref_GetRef(_Py_NULL, &ref) == -1);
assert(PyErr_ExceptionMatches(PyExc_SystemError));
assert(ref == _Py_NULL);
PyErr_Clear();
#endif
Py_DECREF(weakref);
Py_RETURN_NONE;
}
static void
test_vectorcall_noargs(PyObject *func_varargs)
{
PyObject *res = PyObject_Vectorcall(func_varargs, _Py_NULL, 0, _Py_NULL);
assert(res != _Py_NULL);
assert(PyTuple_Check(res));
assert(PyTuple_GET_SIZE(res) == 1);
PyObject *posargs = PyTuple_GET_ITEM(res, 0);
assert(PyTuple_Check(posargs));
assert(PyTuple_GET_SIZE(posargs) == 0);
Py_DECREF(res);
}
static void
test_vectorcall_args(PyObject *func_varargs)
{
PyObject *args_tuple = Py_BuildValue("ii", 1, 2);
assert(args_tuple != _Py_NULL);
size_t nargs = (size_t)PyTuple_GET_SIZE(args_tuple);
PyObject **args = &PyTuple_GET_ITEM(args_tuple, 0);
PyObject *res = PyObject_Vectorcall(func_varargs, args, nargs, _Py_NULL);
Py_DECREF(args_tuple);
assert(res != _Py_NULL);
assert(PyTuple_Check(res));
assert(PyTuple_GET_SIZE(res) == 1);
PyObject *posargs = PyTuple_GET_ITEM(res, 0);
assert(PyTuple_Check(posargs));
assert(PyTuple_GET_SIZE(posargs) == 2);
check_int(PyTuple_GET_ITEM(posargs, 0), 1);
check_int(PyTuple_GET_ITEM(posargs, 1), 2);
Py_DECREF(res);
}
static void
test_vectorcall_args_offset(PyObject *func_varargs)
{
// args contains 3 values, but only pass 2 last values
PyObject *args_tuple = Py_BuildValue("iii", 1, 2, 3);
assert(args_tuple != _Py_NULL);
size_t nargs = 2 | PY_VECTORCALL_ARGUMENTS_OFFSET;
PyObject **args = &PyTuple_GET_ITEM(args_tuple, 1);
PyObject *arg0 = PyTuple_GET_ITEM(args_tuple, 0);
PyObject *res = PyObject_Vectorcall(func_varargs, args, nargs, _Py_NULL);
assert(PyTuple_GET_ITEM(args_tuple, 0) == arg0);
Py_DECREF(args_tuple);
assert(res != _Py_NULL);
assert(PyTuple_Check(res));
assert(PyTuple_GET_SIZE(res) == 1);
PyObject *posargs = PyTuple_GET_ITEM(res, 0);
assert(PyTuple_Check(posargs));
assert(PyTuple_GET_SIZE(posargs) == 2);
check_int(PyTuple_GET_ITEM(posargs, 0), 2);
check_int(PyTuple_GET_ITEM(posargs, 1), 3);
Py_DECREF(res);
}
static void
test_vectorcall_args_kwnames(PyObject *func_varargs)
{
PyObject *args_tuple = Py_BuildValue("iiiii", 1, 2, 3, 4, 5);
assert(args_tuple != _Py_NULL);
PyObject **args = &PyTuple_GET_ITEM(args_tuple, 0);
#ifdef PYTHON3
PyObject *key1 = PyUnicode_FromString("key1");
PyObject *key2 = PyUnicode_FromString("key2");
#else
PyObject *key1 = PyString_FromString("key1");
PyObject *key2 = PyString_FromString("key2");
#endif
assert(key1 != _Py_NULL);
assert(key2 != _Py_NULL);
PyObject *kwnames = PyTuple_Pack(2, key1, key2);
assert(kwnames != _Py_NULL);
size_t nargs = (size_t)(PyTuple_GET_SIZE(args_tuple) - PyTuple_GET_SIZE(kwnames));
PyObject *res = PyObject_Vectorcall(func_varargs, args, nargs, kwnames);
Py_DECREF(args_tuple);
Py_DECREF(kwnames);
assert(res != _Py_NULL);
assert(PyTuple_Check(res));
assert(PyTuple_GET_SIZE(res) == 2);
PyObject *posargs = PyTuple_GET_ITEM(res, 0);
PyObject *kwargs = PyTuple_GET_ITEM(res, 1);
assert(PyTuple_Check(posargs));
assert(PyTuple_GET_SIZE(posargs) == 3);
check_int(PyTuple_GET_ITEM(posargs, 0), 1);
check_int(PyTuple_GET_ITEM(posargs, 1), 2);
check_int(PyTuple_GET_ITEM(posargs, 2), 3);
assert(PyDict_Check(kwargs));
assert(PyDict_Size(kwargs) == 2);
Py_ssize_t pos = 0;
PyObject *key, *value;
while (PyDict_Next(kwargs, &pos, &key, &value)) {
#ifdef PYTHON3
assert(PyUnicode_Check(key));
#else
assert(PyString_Check(key));
#endif
if (PyObject_RichCompareBool(key, key1, Py_EQ)) {
check_int(value, 4);
}
else {
assert(PyObject_RichCompareBool(key, key2, Py_EQ));
check_int(value, 5);
}
}
Py_DECREF(res);
Py_DECREF(key1);
Py_DECREF(key2);
}
static PyObject *
test_vectorcall(PyObject *module, PyObject *Py_UNUSED(args))
{
#ifndef PYTHON3
module = PyImport_ImportModule(MODULE_NAME_STR);
assert(module != _Py_NULL);
#endif
PyObject *func_varargs = PyObject_GetAttrString(module, "func_varargs");
#ifndef PYTHON3
Py_DECREF(module);
#endif
if (func_varargs == _Py_NULL) {
return _Py_NULL;