8000 gh-111178: fix UBSan failures in `Modules/_interp*module.c` by picnixz · Pull Request #129779 · python/cpython · GitHub
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gh-111178: fix UBSan failures in Modules/_interp*module.c #129779

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Merged
merged 10 commits into from
Feb 17, 2025
Merged

gh-111178: fix UBSan failures in Modules/_interp*module.c #129779

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be385ff
remove redundant casts in `Modules/_interpchannelsmodule.c`
picnixz Jan 25, 2025
ae33ded
suppress unused return values in `Modules/_interpchannelsmodule.c`
picnixz Jan 25, 2025
712953d
suppress unused return values in `Modules/_interpqueuesmodule.c`
picnixz Jan 25, 2025
7dad552
fix UBSan failures for `XIBufferViewObject`
picnixz Jan 25, 2025
81d2315
suppress unused return values in `Modules/_interpretersmodule.c`
picnixz Jan 25, 2025
baee622
Merge remote-tracking branch 'upstream/main' into fix/ubsan/interp-11…
picnixz Feb 7, 2025
d4483e0
do not use the macro when the type is already checked
picnixz Feb 7, 2025
e2ee75e
fix compilation
picnixz Feb 7, 2025
2794f87
Do not add an underscore to the macro if none is needed.
picnixz Feb 8, 2025
9c6f69c
Do Do not use `_` + capital letter in new code as it is also UB.
picnixz Feb 8, 2025
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Do not add an underscore to the macro if none is needed.
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@picnixz
picnixz committed Feb 8, 2025
commit 2794f871b566d5c6799682845ac11f7886bbc53f
18 changes: 9 additions & 9 deletions Modules/_interpchannelsmodule.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2268,7 +2268,7 @@ typedef struct channelid {
_channels *channels;
} channelid;

#define _channelid_CAST(op) ((channelid *)(op))
#define channelid_CAST(op) ((channelid *)(op))

struct channel_id_converter_data {
PyObject *module;
Expand Down Expand Up @@ -2400,7 +2400,7 @@ _channelid_new(PyObject *mod, PyTypeObject *cls,
static void
channelid_dealloc(PyObject *op)
{
channelid *self = _channelid_CAST(op);
channelid *self = channelid_CAST(op);
int64_t cid = self->cid;
_channels *channels = self->channels;

Expand All @@ -2423,7 +2423,7 @@ channelid_repr(PyObject *self)
PyTypeObject *type = Py_TYPE(self);
const char *name = _PyType_Name(type);

channelid *cidobj = _channelid_CAST(self);
channelid *cidobj = channelid_CAST(self);
const char *fmt;
if (cidobj->end == CHANNEL_SEND) {
fmt = "%s(%" PRId64 ", send=True)";
Expand All @@ -2440,21 +2440,21 @@ channelid_repr(PyObject *self)
static PyObject *
channelid_str(PyObject *self)
{
channelid *cidobj = _channelid_CAST(self);
channelid *cidobj = channelid_CAST(self);
return PyUnicode_FromFormat("%" PRId64 "", cidobj->cid);
}

static PyObject *
channelid_int(PyObject *self)
{
channelid *cidobj = _channelid_CAST(self);
channelid *cidobj = channelid_CAST(self);
return PyLong_FromLongLong(cidobj->cid);
}

static Py_hash_t
channelid_hash(PyObject *self)
{
channelid *cidobj = _channelid_CAST(self);
channelid *cidobj = channelid_CAST(self);
PyObject *pyid = PyLong_FromLongLong(cidobj->cid);
if (pyid == NULL) {
return -1;
Expand Down Expand Up @@ -2486,7 +2486,7 @@ channelid_richcompare(PyObject *self, PyObject *other, int op)
goto done;
}

channelid *cidobj = _channelid_CAST(self);
channelid *cidobj = channelid_CAST(self);
int equal;
if (PyObject_TypeCheck(other, state->ChannelIDType)) {
channelid *othercidobj = (channelid *)other; // fast safe cast
Expand Down Expand Up @@ -2609,7 +2609,7 @@ _channelid_shared(PyThreadState *tstate, PyObject *obj, _PyXIData_t *data)
return -1;
}
struct _channelid_xid *xid = (struct _channelid_xid *)_PyXIData_DATA(data);
channelid *cidobj = _channelid_CAST(obj);
channelid *cidobj = channelid_CAST(obj);
xid->cid = cidobj->cid;
xid->end = cidobj->end;
xid->resolve = cidobj->resolve;
Expand All @@ -2620,7 +2620,7 @@ static PyObject *
channelid_end(PyObject *self, void *end)
{
int force = 1;
channelid *cidobj = _channelid_CAST(self);
channelid *cidobj = channelid_CAST(self);
if (end != NULL) {
PyObject *obj = NULL;
int err = newchannelid(Py_TYPE(self), cidobj->cid, *(int *)end,
Expand Down
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