8000 gh-111178: fix UBSan failures in `Modules/_struct.c` by picnixz · Pull Request #129793 · python/cpython · GitHub
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gh-111178: fix UBSan failures in Modules/_struct.c #129793

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Merged
merged 10 commits into from
Feb 23, 2025
Merged

gh-111178: fix UBSan failures in Modules/_struct.c #129793

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3a9cc21
fix UBSan failures for `PyStructObject`
picnixz Jan 25, 2025
5613079
suppress unused return values
picnixz Jan 25, 2025
69feffd
fix UBSan failures for `unpackiterobject`
picnixz Jan 25, 2025
0966e86
Merge remote-tracking branch 'upstream/main' into fix/ubsan/struct-11…
picnixz Feb 7, 2025
0e700b0
Do Do not use `_` + capital letter in new code as it is also UB.
picnixz Feb 8, 2025
3483d82
Do not add an underscore to the macro if none is needed.
picnixz Feb 8, 2025
aad1d42
Merge branch 'main' into fix/ubsan/struct-111178
encukou Feb 18, 2025
5c360bd
fix semantic naming
picnixz Feb 22, 2025
27f6364
use better semantic naming
picnixz Feb 23, 2025
9f13d28
revert a space that increased the diff and was more inconsistent
picnixz Feb 23, 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 3483d82047f17cd31645ec36e0f1b3deb543bfbf
10 changes: 5 additions & 5 deletions Modules/_struct.c
8000
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Original file line number Diff line number Diff line change
Expand Up @@ -2030,12 +2030,12 @@ typedef struct {
Py_ssize_t index;
} unpackiterobject;

#define _unpackiterobject_CAST(op) ((unpackiterobject *)(op))
#define unpackiterobject_CAST(op) ((unpackiterobject *)(op))

static void
unpackiter_dealloc(PyObject *op)
{
unpackiterobject *self = _unpackiterobject_CAST(op);
unpackiterobject *self = unpackiterobject_CAST(op);
/* bpo-31095: UnTrack is needed before calling any callbacks */
PyTypeObject *tp = Py_TYPE(self);
PyObject_GC_UnTrack(self);
Expand All @@ -2048,7 +2048,7 @@ unpackiter_dealloc(PyObject *op)
static int
unpackiter_traverse(PyObject *op, visitproc visit, void *arg)
{
unpackiterobject *self = _unpackiterobject_CAST(op);
unpackiterobject *self = unpackiterobject_CAST(op);
Py_VISIT(Py_TYPE(self));
Py_VISIT(self->so);
Py_VISIT(self->buf.obj);
Expand All @@ -2059,7 +2059,7 @@ static PyObject *
unpackiter_len(PyObject *op, PyObject *Py_UNUSED(args))
{
Py_ssize_t len;
unpackiterobject *self = _unpackiterobject_CAST(op);
unpackiterobject *self = unpackiterobject_CAST(op);
if (self->so == NULL) {
len = 0;
}
Expand All @@ -2077,7 +2077,7 @@ static PyMethodDef unpackiter_methods[] = {
static PyObject *
unpackiter_iternext(PyObject *op)
{
unpackiterobject *self = _unpackiterobject_CAST(op);
unpackiterobject *self = unpackiterobject_CAST(op);
_structmodulestate *state = get_struct_state_iterinst(self);
PyObject *result;
if (self->so == NULL) {
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