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[3.13] gh-111178: fix UBSan failures in Modules/_multiprocessing/semaphore.c (GH-129084) (#129100)

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gh-111178: fix UBSan failures in `Modules/_multiprocessing/semaphore.c` (GH-129084)

fix UBSan failures for `SemLockObject`
(cherry picked from commit 5ed5572cac)

Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
This commit is contained in:
Miss Islington (bot) 2025-01-20 22:05:52 +01:00 • committed by GitHub
parent 2077082463
commit c5e1131cfb
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1 changed files with 5 additions and 2 deletions
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7
Modules/_multiprocessing/semaphore.c
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@ -27,6 +27,8 @@ typedef struct {
char *name;
} SemLockObject;
#define _SemLockObject_CAST(op) ((SemLockObject *)(op))
/*[python input]
class SEM_HANDLE_converter(CConverter):
type = "SEM_HANDLE"
@ -575,8 +577,9 @@ _multiprocessing_SemLock__rebuild_impl(PyTypeObject *type, SEM_HANDLE handle,
}
static void
semlock_dealloc(SemLockObject* self)
semlock_dealloc(PyObject *op)
{
SemLockObject *self = _SemLockObject_CAST(op);
PyTypeObject *tp = Py_TYPE(self);
PyObject_GC_UnTrack(self);
if (self->handle != SEM_FAILED)
@ -717,7 +720,7 @@ _multiprocessing_SemLock___exit___impl(SemLockObject *self,
}
static int
semlock_traverse(SemLockObject *s, visitproc visit, void *arg)
semlock_traverse(PyObject *s, visitproc visit, void *arg)
{
Py_VISIT(Py_TYPE(s));
return 0;