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gh-99300: Use Py_NewRef() in Objects/listobject.c (#99336)

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Replace Py_INCREF() and Py_XINCREF() with Py_NewRef() and
Py_XNewRef() in Objects/listobject.c.
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Victor Stinner 2022-11-10 22:09:18 +01:00 • committed by GitHub
parent 694cdb24a6
commit dbf8613a2e
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 20 additions and 40 deletions
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60
Objects/listobject.c
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@ -299,8 +299,7 @@ ins1(PyListObject *self, Py_ssize_t where, PyObject *v)
items = self->ob_item; items = self->ob_item;
for (i = n; --i >= where; ) for (i = n; --i >= where; )
items[i+1] = items[i]; items[i+1] = items[i];
Py_INCREF(v); items[where] = Py_NewRef(v);
items[where] = v;
return 0; return 0;
} }
@ -332,8 +331,7 @@ int
PyList_Append(PyObject *op, PyObject *newitem) PyList_Append(PyObject *op, PyObject *newitem)
{ {
if (PyList_Check(op) && (newitem != NULL)) { if (PyList_Check(op) && (newitem != NULL)) {
Py_INCREF(newitem); return _PyList_AppendTakeRef((PyListObject *)op, Py_NewRef(newitem));
return _PyList_AppendTakeRef((PyListObject *)op, newitem);
} }
PyErr_BadInternalCall(); PyErr_BadInternalCall();
return -1; return -1;
@ -461,8 +459,7 @@ list_item(PyListObject *a, Py_ssize_t i)
PyErr_SetObject(PyExc_IndexError, &_Py_STR(list_err)); PyErr_SetObject(PyExc_IndexError, &_Py_STR(list_err));
return NULL; return NULL;
} }
Py_INCREF(a->ob_item[i]); return Py_NewRef(a->ob_item[i]);
return a->ob_item[i];
} }
static PyObject * static PyObject *
@ -483,8 +480,7 @@ list_slice(PyListObject *a, Py_ssize_t ilow, Py_ssize_t ihigh)
dest = np->ob_item; dest = np->ob_item;
for (i = 0; i < len; i++) { for (i = 0; i < len; i++) {
PyObject *v = src[i]; PyObject *v = src[i];
Py_INCREF(v); dest[i] = Py_NewRef(v);
dest[i] = v;
} }
Py_SET_SIZE(np, len); Py_SET_SIZE(np, len);
return (PyObject *)np; return (PyObject *)np;
@ -539,15 +535,13 @@ list_concat(PyListObject *a, PyObject *bb)
dest = np->ob_item; dest = np->ob_item;
for (i = 0; i < Py_SIZE(a); i++) { for (i = 0; i < Py_SIZE(a); i++) {
PyObject *v = src[i]; PyObject *v = src[i];
Py_INCREF(v); dest[i] = Py_NewRef(v);
dest[i] = v;
} }
src = b->ob_item; src = b->ob_item;
dest = np->ob_item + Py_SIZE(a); dest = np->ob_item + Py_SIZE(a);
for (i = 0; i < Py_SIZE(b); i++) { for (i = 0; i < Py_SIZE(b); i++) {
PyObject *v = src[i]; PyObject *v = src[i];
Py_INCREF(v); dest[i] = Py_NewRef(v);
dest[i] = v;
} }
Py_SET_SIZE(np, size); Py_SET_SIZE(np, size);
return (PyObject *)np; return (PyObject *)np;
@ -716,8 +710,7 @@ list_ass_slice(PyListObject *a, Py_ssize_t ilow, Py_ssize_t ihigh, PyObject *v)
} }
for (k = 0; k < n; k++, ilow++) { for (k = 0; k < n; k++, ilow++) {
PyObject *w = vitem[k]; PyObject *w = vitem[k];
Py_XINCREF(w); item[ilow] = Py_XNewRef(w);
item[ilow] = w;
} }
for (k = norig - 1; k >= 0; --k) for (k = norig - 1; k >= 0; --k)
Py_XDECREF(recycle[k]); Py_XDECREF(recycle[k]);
@ -745,14 +738,12 @@ list_inplace_repeat(PyListObject *self, Py_ssize_t n)
{ {
Py_ssize_t input_size = PyList_GET_SIZE(self); Py_ssize_t input_size = PyList_GET_SIZE(self);
if (input_size == 0 || n == 1) { if (input_size == 0 || n == 1) {
Py_INCREF(self); return Py_NewRef(self);
return (PyObject *)self;
} }
if (n < 1) { if (n < 1) {
(void)_list_clear(self); (void)_list_clear(self);
Py_INCREF(self); return Py_NewRef(self);
return (PyObject *)self;
} }
if (input_size > PY_SSIZE_T_MAX / n) { if (input_size > PY_SSIZE_T_MAX / n) {
@ -770,8 +761,7 @@ list_inplace_repeat(PyListObject *self, Py_ssize_t n)
_Py_memory_repeat((char *)items, sizeof(PyObject *)*output_size, _Py_memory_repeat((char *)items, sizeof(PyObject *)*output_size,
sizeof(PyObject *)*input_size); sizeof(PyObject *)*input_size);
Py_INCREF(self); return Py_NewRef(self);
return (PyObject *)self;
} }
static int static int
@ -784,8 +774,7 @@ list_ass_item(PyListObject *a, Py_ssize_t i, PyObject *v)
} }
if (v == NULL) if (v == NULL)
return list_ass_slice(a, i, i+1, v); return list_ass_slice(a, i, i+1, v);
Py_INCREF(v); Py_SETREF(a->ob_item[i], Py_NewRef(v));
Py_SETREF(a->ob_item[i], v);
return 0; return 0;
} }
@ -913,8 +902,7 @@ list_extend(PyListObject *self, PyObject *iterable)
dest = self->ob_item + m; dest = self->ob_item + m;
for (i = 0; i < n; i++) { for (i = 0; i < n; i++) {
PyObject *o = src[i]; PyObject *o = src[i];
Py_INCREF(o); dest[i] = Py_NewRef(o);
dest[i] = o;
} }
Py_DECREF(iterable); Py_DECREF(iterable);
Py_RETURN_NONE; Py_RETURN_NONE;
@ -1002,8 +990,7 @@ list_inplace_concat(PyListObject *self, PyObject *other)
if (result == NULL) if (result == NULL)
return result; return result;
Py_DECREF(result); Py_DECREF(result);
Py_INCREF(self); return Py_NewRef(self);
return (PyObject *)self;
} }
/*[clinic input] /*[clinic input]
@ -2512,8 +2499,7 @@ keyfunc_fail:
} }
PyMem_Free(final_ob_item); PyMem_Free(final_ob_item);
} }
Py_XINCREF(result); return Py_XNewRef(result);
return result;
} }
#undef IFLT #undef IFLT
#undef ISLT #undef ISLT
@ -2901,8 +2887,7 @@ list_subscript(PyListObject* self, PyObject* item)
dest = ((PyListObject *)result)->ob_item; dest = ((PyListObject *)result)->ob_item;
for (cur = start, i = 0; i < slicelength; for (cur = start, i = 0; i < slicelength;
cur += (size_t)step, i++) { cur += (size_t)step, i++) {
it = src[cur]; it = Py_NewRef(src[cur]);
Py_INCREF(it);
dest[i] = it; dest[i] = it;
} }
Py_SET_SIZE(result, slicelength); Py_SET_SIZE(result, slicelength);
@ -3057,8 +3042,7 @@ list_ass_subscript(PyListObject* self, PyObject* item, PyObject* value)
for (cur = start, i = 0; i < slicelength; for (cur = start, i = 0; i < slicelength;
cur += (size_t)step, i++) { cur += (size_t)step, i++) {
garbage[i] = selfitems[cur]; garbage[i] = selfitems[cur];
ins = seqitems[i]; ins = Py_NewRef(seqitems[i]);
Py_INCREF(ins);
selfitems[cur] = ins; selfitems[cur] = ins;
} }
@ -3199,8 +3183,7 @@ list_iter(PyObject *seq)
if (it == NULL) if (it == NULL)
return NULL; return NULL;
it->it_index = 0; it->it_index = 0;
Py_INCREF(seq); it->it_seq = (PyListObject *)Py_NewRef(seq);
it->it_seq = (PyListObject *)seq;
_PyObject_GC_TRACK(it); _PyObject_GC_TRACK(it);
return (PyObject *)it; return (PyObject *)it;
} }
@ -3235,8 +3218,7 @@ listiter_next(_PyListIterObject *it)
if (it->it_index < PyList_GET_SIZE(seq)) { if (it->it_index < PyList_GET_SIZE(seq)) {
item = PyList_GET_ITEM(seq, it->it_index); item = PyList_GET_ITEM(seq, it->it_index);
++it->it_index; ++it->it_index;
Py_INCREF(item); return Py_NewRef(item);
return item;
} }
it->it_seq = NULL; it->it_seq = NULL;
@ -3350,8 +3332,7 @@ list___reversed___impl(PyListObject *self)
return NULL; return NULL;
assert(PyList_Check(self)); assert(PyList_Check(self));
it->it_index = PyList_GET_SIZE(self) - 1; it->it_index = PyList_GET_SIZE(self) - 1;
Py_INCREF(self); it->it_seq = (PyListObject*)Py_NewRef(self);
it->it_seq = self;
PyObject_GC_Track(it); PyObject_GC_Track(it);
return (PyObject *)it; return (PyObject *)it;
} }
@ -3389,8 +3370,7 @@ listreviter_next(listreviterobject *it)
if (index>=0 && index < PyList_GET_SIZE(seq)) { if (index>=0 && index < PyList_GET_SIZE(seq)) {
item = PyList_GET_ITEM(seq, index); item = PyList_GET_ITEM(seq, index);
it->it_index--; it->it_index--;
Py_INCREF(item); return Py_NewRef(item);
return item;
} }
it->it_index = -1; it->it_index = -1;
it->it_seq = NULL; it->it_seq = NULL;