Example #1
0
static PyObject *
try_complex_special_method(PyObject *op)
{
    PyObject *f;
    _Py_IDENTIFIER(__complex__);

    f = _PyObject_LookupSpecial(op, &PyId___complex__);
    if (f) {
        PyObject *res = _PyObject_CallNoArg(f);
        Py_DECREF(f);
        if (!res || PyComplex_CheckExact(res)) {
            return res;
        }
        if (!PyComplex_Check(res)) {
            PyErr_Format(PyExc_TypeError,
                "__complex__ returned non-complex (type %.200s)",
                res->ob_type->tp_name);
            Py_DECREF(res);
            return NULL;
        }
        /* Issue #29894: warn if 'res' not of exact type complex. */
        if (PyErr_WarnFormat(PyExc_DeprecationWarning, 1,
                "__complex__ returned non-complex (type %.200s).  "
                "The ability to return an instance of a strict subclass of complex "
                "is deprecated, and may be removed in a future version of Python.",
                res->ob_type->tp_name)) {
            Py_DECREF(res);
            return NULL;
        }
        return res;
    }
    return NULL;
}
Example #2
0
File: gcmodule.c Project: d11/rts
void
_PyGC_Fini(void)
{
    if (!(debug & DEBUG_SAVEALL)
        && garbage != NULL && PyList_GET_SIZE(garbage) > 0) {
        char *message;
        if (debug & DEBUG_UNCOLLECTABLE)
            message = "gc: %zd uncollectable objects at " \
                "shutdown";
        else
            message = "gc: %zd uncollectable objects at " \
                "shutdown; use gc.set_debug(gc.DEBUG_UNCOLLECTABLE) to list them";
        if (PyErr_WarnFormat(PyExc_ResourceWarning, 0, message,
                             PyList_GET_SIZE(garbage)) < 0)
            PyErr_WriteUnraisable(NULL);
        if (debug & DEBUG_UNCOLLECTABLE) {
            PyObject *repr = NULL, *bytes = NULL;
            repr = PyObject_Repr(garbage);
            if (!repr || !(bytes = PyUnicode_EncodeFSDefault(repr)))
                PyErr_WriteUnraisable(garbage);
            else {
                PySys_WriteStderr(
                    "    %s\n",
                    PyBytes_AS_STRING(bytes)
                    );
            }
            Py_XDECREF(repr);
            Py_XDECREF(bytes);
        }
    }
}
Example #3
0
static void bpy_lib_exit_warn_type(BPy_Library *self, PyObject *item)
{
	PyObject *exc, *val, *tb;
	PyErr_Fetch(&exc, &val, &tb);
	if (PyErr_WarnFormat(PyExc_UserWarning, 1,
	                     "load: '%s' expected a string type, not a %.200s",
	                     self->abspath, Py_TYPE(item)->tp_name)) {
		/* Spurious errors can appear at shutdown */
		if (PyErr_ExceptionMatches(PyExc_Warning)) {
			PyErr_WriteUnraisable((PyObject *)self);
		}
	}
	PyErr_Restore(exc, val, tb);
}
Example #4
0
static void bpy_lib_exit_warn_idname(BPy_Library *self, const char *name_plural, const char *idname)
{
	PyObject *exc, *val, *tb;
	PyErr_Fetch(&exc, &val, &tb);
	if (PyErr_WarnFormat(PyExc_UserWarning, 1,
	                     "load: '%s' does not contain %s[\"%s\"]",
	                     self->abspath, name_plural, idname)) {
		/* Spurious errors can appear at shutdown */
		if (PyErr_ExceptionMatches(PyExc_Warning)) {
			PyErr_WriteUnraisable((PyObject *)self);
		}
	}
	PyErr_Restore(exc, val, tb);
}
Example #5
0
/* Check API/ABI version
 * Issues a warning on mismatch, which is usually not fatal.
 * Returns 0 if an exception is raised.
 */
static int
check_api_version(const char *name, int module_api_version)
{
    if (module_api_version != PYTHON_API_VERSION && module_api_version != PYTHON_ABI_VERSION) {
        int err;
        err = PyErr_WarnFormat(PyExc_RuntimeWarning, 1,
            "Python C API version mismatch for module %.100s: "
            "This Python has API version %d, module %.100s has version %d.",
             name,
             PYTHON_API_VERSION, name, module_api_version);
        if (err)
            return 0;
    }
    return 1;
}
Example #6
0
/* Because this can call arbitrary code, it shouldn't be called when
   the refcount is 0 (that is, not directly from tp_dealloc unless
   the refcount has been temporarily re-incremented). */
static PyObject *
fileio_dealloc_warn(fileio *self, PyObject *source)
{
    if (self->fd >= 0 && self->closefd) {
        PyObject *exc, *val, *tb;
        PyErr_Fetch(&exc, &val, &tb);
        if (PyErr_WarnFormat(PyExc_ResourceWarning, 1,
                             "unclosed file %R", source)) {
            /* Spurious errors can appear at shutdown */
            if (PyErr_ExceptionMatches(PyExc_Warning))
                PyErr_WriteUnraisable((PyObject *) self);
        }
        PyErr_Restore(exc, val, tb);
    }
    Py_RETURN_NONE;
}
Example #7
0
static PyObject *
grp_getgrgid_impl(PyModuleDef *module, PyObject *id)
/*[clinic end generated code: output=8a11f5fdeb8c78a0 input=15fa0e2ccf5cda25]*/
{
    PyObject *py_int_id;
    gid_t gid;
    struct group *p;

    if (!_Py_Gid_Converter(id, &gid)) {
        if (!PyErr_ExceptionMatches(PyExc_TypeError)) {
            return NULL;
        }
        PyErr_Clear();
        if (PyErr_WarnFormat(PyExc_DeprecationWarning, 1,
                             "group id must be int, not %.200",
                             id->ob_type->tp_name) < 0) {
            return NULL;
        }
        py_int_id = PyNumber_Long(id);
        if (!py_int_id)
            return NULL;
        if (!_Py_Gid_Converter(py_int_id, &gid)) {
            Py_DECREF(py_int_id);
            return NULL;
        }
        Py_DECREF(py_int_id);
    }

    if ((p = getgrgid(gid)) == NULL) {
        PyObject *gid_obj = _PyLong_FromGid(gid);
        if (gid_obj == NULL)
            return NULL;
        PyErr_Format(PyExc_KeyError, "getgrgid(): gid not found: %S", gid_obj);
        Py_DECREF(gid_obj);
        return NULL;
    }
    return mkgrent(p);
}
Example #8
0
void
_PyGen_Finalize(PyObject *self)
{
    PyGenObject *gen = (PyGenObject *)self;
    PyObject *res;
    PyObject *error_type, *error_value, *error_traceback;

    /* If `gen` is a coroutine, and if it was never awaited on,
       issue a RuntimeWarning. */
    if (gen->gi_code != NULL
            && ((PyCodeObject *)gen->gi_code)->co_flags & (CO_COROUTINE
                                                       | CO_ITERABLE_COROUTINE)
            && gen->gi_frame != NULL
            && gen->gi_frame->f_lasti == -1
            && !PyErr_Occurred()
            && PyErr_WarnFormat(PyExc_RuntimeWarning, 1,
                                "coroutine '%.50S' was never awaited",
                                gen->gi_qualname))
        return;

    if (gen->gi_frame == NULL || gen->gi_frame->f_stacktop == NULL)
        /* Generator isn't paused, so no need to close */
        return;

    /* Save the current exception, if any. */
    PyErr_Fetch(&error_type, &error_value, &error_traceback);

    res = gen_close(gen, NULL);

    if (res == NULL)
        PyErr_WriteUnraisable(self);
    else
        Py_DECREF(res);

    /* Restore the saved exception. */
    PyErr_Restore(error_type, error_value, error_traceback);
}
Example #9
0
static PyObject *
gen_send_ex(PyGenObject *gen, PyObject *arg, int exc, int closing)
{
    PyThreadState *tstate = PyThreadState_GET();
    PyFrameObject *f = gen->gi_frame;
    PyObject *result;

    if (gen->gi_running) {
        char *msg = "generator already executing";
        if (PyCoro_CheckExact(gen))
            msg = "coroutine already executing";
        PyErr_SetString(PyExc_ValueError, msg);
        return NULL;
    }
    if (f == NULL || f->f_stacktop == NULL) {
        if (PyCoro_CheckExact(gen) && !closing) {
            /* `gen` is an exhausted coroutine: raise an error,
               except when called from gen_close(), which should
               always be a silent method. */
            PyErr_SetString(
                PyExc_RuntimeError,
                "cannot reuse already awaited coroutine");
        } else if (arg && !exc) {
            /* `gen` is an exhausted generator:
               only set exception if called from send(). */
            PyErr_SetNone(PyExc_StopIteration);
        }
        return NULL;
    }

    if (f->f_lasti == -1) {
        if (arg && arg != Py_None) {
            char *msg = "can't send non-None value to a "
                        "just-started generator";
            if (PyCoro_CheckExact(gen))
                msg = "can't send non-None value to a "
                      "just-started coroutine";
            PyErr_SetString(PyExc_TypeError, msg);
            return NULL;
        }
    } else {
        /* Push arg onto the frame's value stack */
        result = arg ? arg : Py_None;
        Py_INCREF(result);
        *(f->f_stacktop++) = result;
    }

    /* Generators always return to their most recent caller, not
     * necessarily their creator. */
    Py_XINCREF(tstate->frame);
    assert(f->f_back == NULL);
    f->f_back = tstate->frame;

    gen->gi_running = 1;
    result = PyEval_EvalFrameEx(f, exc);
    gen->gi_running = 0;

    /* Don't keep the reference to f_back any longer than necessary.  It
     * may keep a chain of frames alive or it could create a reference
     * cycle. */
    assert(f->f_back == tstate->frame);
    Py_CLEAR(f->f_back);

    /* If the generator just returned (as opposed to yielding), signal
     * that the generator is exhausted. */
    if (result && f->f_stacktop == NULL) {
        if (result == Py_None) {
            /* Delay exception instantiation if we can */
            PyErr_SetNone(PyExc_StopIteration);
        } else {
            PyObject *e = PyObject_CallFunctionObjArgs(
                               PyExc_StopIteration, result, NULL);
            if (e != NULL) {
                PyErr_SetObject(PyExc_StopIteration, e);
                Py_DECREF(e);
            }
        }
        Py_CLEAR(result);
    }
    else if (!result && PyErr_ExceptionMatches(PyExc_StopIteration)) {
        /* Check for __future__ generator_stop and conditionally turn
         * a leaking StopIteration into RuntimeError (with its cause
         * set appropriately). */
        if (((PyCodeObject *)gen->gi_code)->co_flags &
              (CO_FUTURE_GENERATOR_STOP | CO_COROUTINE | CO_ITERABLE_COROUTINE))
        {
            PyObject *exc, *val, *val2, *tb;
            char *msg = "generator raised StopIteration";
            if (PyCoro_CheckExact(gen))
                msg = "coroutine raised StopIteration";
            PyErr_Fetch(&exc, &val, &tb);
            PyErr_NormalizeException(&exc, &val, &tb);
            if (tb != NULL)
                PyException_SetTraceback(val, tb);
            Py_DECREF(exc);
            Py_XDECREF(tb);
            PyErr_SetString(PyExc_RuntimeError, msg);
            PyErr_Fetch(&exc, &val2, &tb);
            PyErr_NormalizeException(&exc, &val2, &tb);
            Py_INCREF(val);
            PyException_SetCause(val2, val);
            PyException_SetContext(val2, val);
            PyErr_Restore(exc, val2, tb);
        }
        else {
            PyObject *exc, *val, *tb;

            /* Pop the exception before issuing a warning. */
            PyErr_Fetch(&exc, &val, &tb);

            if (PyErr_WarnFormat(PyExc_DeprecationWarning, 1,
                                 "generator '%.50S' raised StopIteration",
                                 gen->gi_qualname)) {
                /* Warning was converted to an error. */
                Py_XDECREF(exc);
                Py_XDECREF(val);
                Py_XDECREF(tb);
            }
            else {
                PyErr_Restore(exc, val, tb);
            }
        }
    }

    if (!result || f->f_stacktop == NULL) {
        /* generator can't be rerun, so release the frame */
        /* first clean reference cycle through stored exception traceback */
        PyObject *t, *v, *tb;
        t = f->f_exc_type;
        v = f->f_exc_value;
        tb = f->f_exc_traceback;
        f->f_exc_type = NULL;
        f->f_exc_value = NULL;
        f->f_exc_traceback = NULL;
        Py_XDECREF(t);
        Py_XDECREF(v);
        Py_XDECREF(tb);
        gen->gi_frame->f_gen = NULL;
        gen->gi_frame = NULL;
        Py_DECREF(f);
    }

    return result;
}
PyObject *
PyModule_Create2(struct PyModuleDef* module, int module_api_version)
{
    PyObject *d, *v, *n;
    PyMethodDef *ml;
    const char* name;
    PyModuleObject *m;
    PyInterpreterState *interp = PyThreadState_Get()->interp;
    if (interp->modules == NULL)
        Py_FatalError("Python import machinery not initialized");
    if (PyType_Ready(&moduledef_type) < 0)
        return NULL;
    if (module->m_base.m_index == 0) {
        max_module_number++;
        Py_REFCNT(module) = 1;
        Py_TYPE(module) = &moduledef_type;
        module->m_base.m_index = max_module_number;
    }
    name = module->m_name;
    if (module_api_version != PYTHON_API_VERSION && module_api_version != PYTHON_ABI_VERSION) {
        int err;
        err = PyErr_WarnFormat(PyExc_RuntimeWarning, 1,
            "Python C API version mismatch for module %.100s: "
            "This Python has API version %d, module %.100s has version %d.",
             name,
             PYTHON_API_VERSION, name, module_api_version);
        if (err)
            return NULL;
    }
    /* Make sure name is fully qualified.

       This is a bit of a hack: when the shared library is loaded,
       the module name is "package.module", but the module calls
       PyModule_Create*() with just "module" for the name.  The shared
       library loader squirrels away the true name of the module in
       _Py_PackageContext, and PyModule_Create*() will substitute this
       (if the name actually matches).
    */
    if (_Py_PackageContext != NULL) {
        char *p = strrchr(_Py_PackageContext, '.');
        if (p != NULL && strcmp(module->m_name, p+1) == 0) {
            name = _Py_PackageContext;
            _Py_PackageContext = NULL;
        }
    }
    if ((m = (PyModuleObject*)PyModule_New(name)) == NULL)
        return NULL;

    if (module->m_size > 0) {
        m->md_state = PyMem_MALLOC(module->m_size);
        if (!m->md_state) {
            PyErr_NoMemory();
            Py_DECREF(m);
            return NULL;
        }
        memset(m->md_state, 0, module->m_size);
    }

    d = PyModule_GetDict((PyObject*)m);
    if (module->m_methods != NULL) {
        n = PyUnicode_FromString(name);
        if (n == NULL) {
            Py_DECREF(m);
            return NULL;
        }
        for (ml = module->m_methods; ml->ml_name != NULL; ml++) {
            if ((ml->ml_flags & METH_CLASS) ||
                (ml->ml_flags & METH_STATIC)) {
                PyErr_SetString(PyExc_ValueError,
                                "module functions cannot set"
                                " METH_CLASS or METH_STATIC");
                Py_DECREF(n);
                Py_DECREF(m);
                return NULL;
            }
            v = PyCFunction_NewEx(ml, (PyObject*)m, n);
            if (v == NULL) {
                Py_DECREF(n);
                Py_DECREF(m);
                return NULL;
            }
            if (PyDict_SetItemString(d, ml->ml_name, v) != 0) {
                Py_DECREF(v);
                Py_DECREF(n);
                Py_DECREF(m);
                return NULL;
            }
            Py_DECREF(v);
        }
        Py_DECREF(n);
    }
    if (module->m_doc != NULL) {
        v = PyUnicode_FromString(module->m_doc);
        if (v == NULL || PyDict_SetItemString(d, "__doc__", v) != 0) {
            Py_XDECREF(v);
            Py_DECREF(m);
            return NULL;
        }
        Py_DECREF(v);
    }
    m->md_def = module;
    return (PyObject*)m;
}