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gh-111178: fix UBSan failures in Modules/_datetimemodule.c #129774

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Merged
encukou merged 15 commits into from
Feb 19, 2025
Merged

gh-111178: fix UBSan failures in Modules/_datetimemodule.c #129774

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d4be207
add cast macros for date and time objects
picnixz Jan 26, 2025
6d1f263
fix UBSan failures for `PyDateTime_Delta`
picnixz Jan 26, 2025
1aeeff8
fix UBSan failures for `PyDateTime_Date`
picnixz Jan 26, 2025
9fee212
fix UBSan failures for `PyDateTime_TZInfo`
picnixz Jan 26, 2025
76d2c68
fix UBSan failures for `PyDateTime_TimeZone`
picnixz Jan 26, 2025
25dbe38
fix UBSan failures for `PyDateTime_Time`
picnixz Jan 26, 2025
0a3cb0e
fix UBSan failures for `PyDateTime_DateTime`
picnixz Jan 26, 2025
19bc7e1
fix UBSan failures for `PyDateTime_IsoCalendarDate`
picnixz Jan 26, 2025
b189115
use 'dummy' for NOARGS method
picnixz Feb 6, 2025
3c883a6
use 'dummy' for NOARGS method
picnixz Feb 6, 2025
86af79a
Merge remote-tracking branch 'upstream/main' into fix/ubsan/datetime-…
picnixz Feb 7, 2025
22bdf8c
Fixup naming
picnixz Feb 7, 2025
b6ee734
Do not use `_` + capital letter in new code as it is also UB.
picnixz Feb 8, 2025
9296eb6
Merge branch 'fix/ubsan/datetime-111178' of github.com:picnixz/cpytho…
picnixz Feb 8, 2025
f108a14
Merge in the main branch to resolve conflict with #127345
encukou Feb 19, 2025
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fix UBSan failures for PyDateTime_TZInfo
  • Loading branch information
@picnixz
picnixz committed Jan 26, 2025
commit 9fee212880c9a3cd264bd1fbca85fc4593f77077
20 changes: 10 additions & 10 deletions Modules/_datetimemodule.c
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Original file line number Diff line number Diff line change
Expand Up @@ -4043,19 +4043,19 @@ tzinfo_nogo(const char* methodname)
/* Methods. A subclass must implement these. */

static PyObject *
tzinfo_tzname(PyDateTime_TZInfo *self, PyObject *dt)
tzinfo_tzname(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(dt))
{
return tzinfo_nogo("tzname");
}

static PyObject *
tzinfo_utcoffset(PyDateTime_TZInfo *self, PyObject *dt)
tzinfo_utcoffset(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(dt))
{
return tzinfo_nogo("utcoffset");
}

static PyObject *
tzinfo_dst(PyDateTime_TZInfo *self, PyObject *dt)
tzinfo_dst(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(dt))
{
return tzinfo_nogo("dst");
}
Expand All @@ -4068,7 +4068,7 @@ static PyObject *datetime_utcoffset(PyObject *self, PyObject *);
static PyObject *datetime_dst(PyObject *self, PyObject *);

static PyObject *
tzinfo_fromutc(PyDateTime_TZInfo *self, PyObject *dt)
tzinfo_fromutc(PyObject *self, PyObject *dt)
{
PyObject *result = NULL;
PyObject *off = NULL, *dst = NULL;
Expand All @@ -4079,7 +4079,7 @@ tzinfo_fromutc(PyDateTime_TZInfo *self, PyObject *dt)
"fromutc: argument must be a datetime");
return NULL;
}
if (GET_DT_TZINFO(dt) != (PyObject *)self) {
if (GET_DT_TZINFO(dt) != self) {
PyErr_SetString(PyExc_ValueError, "fromutc: dt.tzinfo "
"is not self");
return NULL;
Expand Down Expand Up @@ -4176,20 +4176,20 @@ tzinfo_reduce(PyObject *self, PyObject *Py_UNUSED(ignored))

static PyMethodDef tzinfo_methods[] = {

{"tzname", (PyCFunction)tzinfo_tzname, METH_O,
{"tzname", tzinfo_tzname, METH_O,
PyDoc_STR("datetime -> string name of time zone.")},

{"utcoffset", (PyCFunction)tzinfo_utcoffset, METH_O,
{"utcoffset", tzinfo_utcoffset, METH_O,
PyDoc_STR("datetime -> timedelta showing offset from UTC, negative "
"values indicating West of UTC")},

{"dst", (PyCFunction)tzinfo_dst, METH_O,
{"dst", tzinfo_dst, METH_O,
PyDoc_STR("datetime -> DST offset as timedelta positive east of UTC.")},

{"fromutc", (PyCFunction)tzinfo_fromutc, METH_O,
{"fromutc", tzinfo_fromutc, METH_O,
PyDoc_STR("datetime in UTC -> datetime in local time.")},

{"__reduce__", tzinfo_reduce, METH_NOARGS,
{"__reduce__", tzinfo_reduce, METH_NOARGS,
PyDoc_STR("-> (cls, state)")},

{NULL, NULL}
Expand Down