mirror of https://github.com/python/cpython
gh-111178: Avoid calling functions from incompatible pointer types in _tkinter.c (GH-112893)
Fix undefined behavior warnings (UBSan -fsanitize=function).
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a1eea1d032
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@ -735,8 +735,9 @@ newPyTclObject(Tcl_Obj *arg)
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}
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static void
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PyTclObject_dealloc(PyTclObject *self)
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PyTclObject_dealloc(PyObject *_self)
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{
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PyTclObject *self = (PyTclObject *)_self;
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PyObject *tp = (PyObject *) Py_TYPE(self);
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Tcl_DecrRefCount(self->value);
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Py_XDECREF(self->string);
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@ -749,8 +750,9 @@ PyDoc_STRVAR(PyTclObject_string__doc__,
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"the string representation of this object, either as str or bytes");
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static PyObject *
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PyTclObject_string(PyTclObject *self, void *ignored)
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PyTclObject_string(PyObject *_self, void *ignored)
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{
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PyTclObject *self = (PyTclObject *)_self;
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if (!self->string) {
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self->string = unicodeFromTclObj(self->value);
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if (!self->string)
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@ -760,8 +762,9 @@ PyTclObject_string(PyTclObject *self, void *ignored)
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}
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static PyObject *
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PyTclObject_str(PyTclObject *self)
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PyTclObject_str(PyObject *_self)
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{
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PyTclObject *self = (PyTclObject *)_self;
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if (self->string) {
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return Py_NewRef(self->string);
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}
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@ -770,9 +773,10 @@ PyTclObject_str(PyTclObject *self)
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}
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static PyObject *
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PyTclObject_repr(PyTclObject *self)
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PyTclObject_repr(PyObject *_self)
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{
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PyObject *repr, *str = PyTclObject_str(self);
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PyTclObject *self = (PyTclObject *)_self;
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PyObject *repr, *str = PyTclObject_str(_self);
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if (str == NULL)
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return NULL;
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repr = PyUnicode_FromFormat("<%s object: %R>",
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@ -809,23 +813,24 @@ PyTclObject_richcompare(PyObject *self, PyObject *other, int op)
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PyDoc_STRVAR(get_typename__doc__, "name of the Tcl type");
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static PyObject*
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get_typename(PyTclObject* obj, void* ignored)
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get_typename(PyObject *self, void* ignored)
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{
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PyTclObject *obj = (PyTclObject *)self;
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return unicodeFromTclString(obj->value->typePtr->name);
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}
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static PyGetSetDef PyTclObject_getsetlist[] = {
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{"typename", (getter)get_typename, NULL, get_typename__doc__},
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{"string", (getter)PyTclObject_string, NULL,
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{"typename", get_typename, NULL, get_typename__doc__},
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{"string", PyTclObject_string, NULL,
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PyTclObject_string__doc__},
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{0},
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};
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static PyType_Slot PyTclObject_Type_slots[] = {
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{Py_tp_dealloc, (destructor)PyTclObject_dealloc},
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{Py_tp_repr, (reprfunc)PyTclObject_repr},
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{Py_tp_str, (reprfunc)PyTclObject_str},
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{Py_tp_dealloc, PyTclObject_dealloc},
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{Py_tp_repr, PyTclObject_repr},
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{Py_tp_str, PyTclObject_str},
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{Py_tp_getattro, PyObject_GenericGetAttr},
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{Py_tp_richcompare, PyTclObject_richcompare},
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{Py_tp_getset, PyTclObject_getsetlist},
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@ -1306,8 +1311,9 @@ Tkapp_ObjectResult(TkappObject *self)
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hold the Python lock. */
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static int
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Tkapp_CallProc(Tkapp_CallEvent *e, int flags)
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Tkapp_CallProc(Tcl_Event *evPtr, int flags)
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{
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Tkapp_CallEvent *e = (Tkapp_CallEvent *)evPtr;
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Tcl_Obj *objStore[ARGSZ];
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Tcl_Obj **objv;
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int objc;
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@ -1385,7 +1391,7 @@ Tkapp_Call(PyObject *selfptr, PyObject *args)
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PyErr_NoMemory();
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return NULL;
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}
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ev->ev.proc = (Tcl_EventProc*)Tkapp_CallProc;
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ev->ev.proc = Tkapp_CallProc;
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ev->self = self;
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ev->args = args;
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ev->res = &res;
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@ -1624,8 +1630,9 @@ var_perform(VarEvent *ev)
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}
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static int
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var_proc(VarEvent* ev, int flags)
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var_proc(Tcl_Event *evPtr, int flags)
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{
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VarEvent *ev = (VarEvent *)evPtr;
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ENTER_PYTHON
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var_perform(ev);
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Tcl_MutexLock(&var_mutex);
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@ -1663,7 +1670,7 @@ var_invoke(EventFunc func, PyObject *selfptr, PyObject *args, int flags)
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ev->res = &res;
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ev->exc = &exc;
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ev->cond = &cond;
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ev->ev.proc = (Tcl_EventProc*)var_proc;
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ev->ev.proc = var_proc;
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Tkapp_ThreadSend(self, (Tcl_Event*)ev, &cond, &var_mutex);
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Tcl_ConditionFinalize(&cond);
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if (!res) {
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@ -2236,8 +2243,9 @@ typedef struct CommandEvent{
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} CommandEvent;
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static int
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Tkapp_CommandProc(CommandEvent *ev, int flags)
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Tkapp_CommandProc(Tcl_Event *evPtr, int flags)
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{
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CommandEvent *ev = (CommandEvent *)evPtr;
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if (ev->create)
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*ev->status = Tcl_CreateObjCommand(
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ev->interp, ev->name, PythonCmd,
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@ -2290,7 +2298,7 @@ _tkinter_tkapp_createcommand_impl(TkappObject *self, const char *name,
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PyMem_Free(data);
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return NULL;
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}
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ev->ev.proc = (Tcl_EventProc*)Tkapp_CommandProc;
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ev->ev.proc = Tkapp_CommandProc;
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ev->interp = self->interp;
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ev->create = 1;
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ev->name = name;
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@ -2343,7 +2351,7 @@ _tkinter_tkapp_deletecommand_impl(TkappObject *self, const char *name)
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PyErr_NoMemory();
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return NULL;
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}
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ev->ev.proc = (Tcl_EventProc*)Tkapp_CommandProc;
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ev->ev.proc = Tkapp_CommandProc;
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ev->interp = self->interp;
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ev->create = 0;
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ev->name = name;
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